DBL_4028_2016-02

Mercedes-Benz

DBL 4028

Company Standard

Date of translation: translati on: 2016-03

Date published: 2016-02 Total no. of pages (including annexes): 27 Person in charge: Dr. Clemens Franz Email: [email protected] [email protected] Plant: 010; Dept.: PT/TVW Phone: +49 (0)711 17-57980

Supply Specification – Quenched and Tempered Steels, Steels for Induction Hardening, Ferritic-Pearlitic Steels for Precipitation Hardening (AFP Steels), Bainitic Steels Foreword This DBL specifies the material supply conditions for quenched and tempered steels, steels for flame hardening and induction hardening, ferritic-pearlitic steels for precipitation hardening (AFP steels), and other steel types for controlled cooling from hot-working temperatures, temperatures, as well as bainitic steels. This edition supersedes the previous edition 2008-11 of this Standard.

Application note: In line with the scope, application of the present version of this Standard shall be checked in case of new vehicle projects or components for which no concept/basic specifications or component requirement specifications have been approved approved yet at the date of issue of this version. The respective contract documents regulate the mandatory application of the present version of this Standard by the supplier.

Changes In comparison with edition 2008-11, the following changes have been made: Concentration of DBL 4028 on material-based material-based specifications. Supply-specific specifications moved to DBL 4532. Material designation corrections (Annex Q). Material 71MnVS4 added. − − − −

NOTE: This NOTE: This translation is for information purposes only. The German version shall prevail above all others.

Copyright Daimler AG

Uncontrolled copy when printed

: Raphael Castro, 2016-06-14

DBL 4028:2016-02, page 2

Contents 1 Scope ............................................................................................................................................... ............................................................................................................................................... 3 2 Normative references .......................................................................................................... ....................................................................................................................... ............. 4 3 Terms and definitions ...................................................................................... ....................................................................................................................... ................................. 4 4 General requirements requirements .......................................................................................................... ....................................................................................................................... ............. 4 5 Abbreviated material material designation designation for documentation documentation ....................................................................... 5 6 Specifications Specifications .................................................................................... ................................................................................................................................... ............................................... 5 6.1 Material standards s tandards ............................................................................................................ ............................................................................................................................ ................ 5 6.2 Manufacturing Manufacturing process ..................................................................................................................... ..................................................................................................................... 5 6.3 Chemical composition........................................................................... ....................................................................................................................... ............................................ 6 6.3.1 Ready-to-install parts ........................................................................................................................ ........................................................................................................................ 6 6.3.2 Semi-finished products (input stock, solid forming blanks) .............................................................. .............................................................. 6 6.4 Hardenability Hardenability ..................................................................................................................................... ..................................................................................................................................... 7 6.5 Internal soundness ......................................................................................................................... ........................................................................................................................... .. 8 6.5.1 Microscopic degree of purity...................................................................................... ............................................................................................................. ....................... 8 6.5.2 Macroscopic degree of purity .................................................................................................. ........................................................................................................... ......... 8 6.6 Austenitic grain grain size ......................................................................................... .......................................................................................................................... ................................. 8 6.7 Suitability for induction hardening........................................................................................... ..................................................................................................... .......... 8 7 Tests ................................................................................................................................. ................................................................................................................................................. ................ 8 7.1 Test methods ...................................................................................... .................................................................................................................................... .............................................. 8 7.1.1 Chemical composition testing .................................................................................................. ........................................................................................................... ......... 8 7.1.2 Testing the hardenability hardenability .................................................................................................................. 9 7.1.3 Testing the internal soundness ................................................................................... ......................................................................................................... ...................... 9 7.1.4 Testing the grain size ............................................................................. ........................................................................................................................ ........................................... 9 7.2 Test frequency .................................................................................... .................................................................................................................................. .............................................. 9 7.3 Test certificates....................................................................................... ............................................................................................................................... ........................................ 10 7.3.1 Inspection certificate in accordance with DIN EN 10204 (plant certificate) .................................... 10 7.3.2 Test report for ultrasonic immersion technology as per SEP 1927 ................................................ 10 Annex A (normative) (normative) Material specification specification 39MnCrB6-2 39MnCrB6-2 mod. (formerly 30MnB5+DBL 30MnB5+DBL 4552) 4552) ............... 11 Annex B (normative) (normative) Material specification specification 34MnCrMo6-4 34MnCrMo6-4 ........................................................................ 12 12 Annex C (normative) (normative) Material specification specification C45E (formerly: Ck45).......................................................... 13 Annex D (normative) (normative) Material specification specification 38MnS6 38MnS6 ................................................................................. 14 Annex E (normative) (normative) Material specification specification 35MnS4 35MnS4 (formerly: C35 mod.) mod.) .............................................. 15 Annex F (normative) (normative) Material specification specification C70S6 C70S6 .................................................................................... 16 Annex G (normative) (normative) Material specification specification for AFP steels steels ........................................................................ 17 17 Annex H (normative) (normative) Material specification specification 30MnVS6+Ti 30MnVS6+Ti........................................................................ .......................................................................... .. 18 Annex I (normative) (normative) Material specification specification 36MnVS4 36MnVS4 ................................................................................ ................................................................................ 19 Annex J (normative) (normative) Material specification specification 35MnVS4-3 35MnVS4-3 (formerly: 38MnVS6mod) 38MnVS6mod) .................................. 20 Annex K (normative) (normative) Material specification specification 46MnVNbS5 46MnVNbS5 (formerly: 46MnVS6mod) 46MnVS6mod) ................................ 21 Annex L (normative) (normative) Material specification specification 70MnVS4 70MnVS4 ............................................................................... ............................................................................... 22 Annex M (normative) (normative) Material specification specification 71MnVS4 71MnVS4 .............................................................................. .............................................................................. 23 Annex N (normative) (normative) Material specification specification 12CrMnMoV7-5 12CrMnMoV7-5 ..................................................................... 24 24 Annex O (normative) (normative) Material specification specification 19MnB4 19MnB4 mod. ....................................................................... ......................................................................... 25 Annex P (informative) (informative) Material specification specification Cf53 (NFN) (NFN) ........................................................................... 26 26 Annex Q (informative) (informative) Materials not for for new designs designs (NFN)...................................................................... 27 27




DBL 4028:2016-02, page 3

1

Scope

This DBL applies to all quenched and tempered steels, steels for flame hardening and induction hardening, ferritic-pearlitic steels for precipitation hardening (AFP steels), and other steel types for controlled cooling from hot-working temperatures, as well as bainitic steels. Materials as per this DBL are used for component parts that are produced, or whose material properties are potentially changed, by forming and/or metal cutting. The relevant DIN, ISO, and EN standards form the basis of this DBL; only those points are mentioned in this DBL which are stated more precisely, or are more restricted compared with the cited standards, or which deviate from the specifications contained in these standards. The specifications of this DBL shall take precedence over any indications contained in DIN, ISO, or EN standards. All suppliers supplying products manufactured from materials conforming to this DBL shall contact the customer plant before initial deliveries are made in order to obtain information on the use and further processing of the products. If required, further specifications shall be agreed or specifications contained in this DBL adapted to the process or component-specific requirements of the customer plant.

Table 1: Product versions, overview Product version .00 .03 .04 .10 .11 .13 .20

All materials as per this DBL in their basic versions

Application example Steel EN 10083-3 – 1.7225 +QT 1000-1200 +DBL 4028.00

Not for new designs (NFN). Description of the surface condition now in DBL 4532 Not for new designs (NFN)

The product versions of these supply specifications describe the chemical composition and the resulting material properties and are specified by the development department of Daimler AG. A material is uniquely described by the material name and/or material number as well as the product version. In this process, product version .00 describes the basic version of the material as per this DBL. Additional product versions are not required at this time. Additional terms of delivery (e.g. surface conditions) for semi-finished products (input stock, solid forming blanks) are listed in DBL 4532 and are defined by the customer plant.




DBL 4028:2016-02, page 4

2

Normative references

The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any changes) applies. DIN EN 10020 DIN EN 10083 DIN EN 10160 DIN EN 10168 DIN EN 10204 DIN EN 10263 DIN EN 10267 DIN EN 10277 DIN EN 10308 DIN EN ISO 642 DIN EN ISO 643 DIN EN ISO 15549 DIN ISO 15787 DIN 50602:1985-09 DBL 4532 DBL 4550 DBL 4551 DBL 6714 DBL 8585 MBN 41010 SEP 1664 SEP 1927

3

Definition and Classification of Grades of Steel Steels for Quenching and Tempering Ultrasonic Testing of Steel Flat Product of Thickness Equal to or Greater than 6 mm (Reflection Method) Steel Products - Inspection Documents - List of Information and Description Metallic Products - Types of Inspection Documents Steel Rod, Bars and Wire for Cold Heading and Cold Extrusion Ferritic-Pearlitic Steels for Precipitation Hardening from Hot-Working Temperatures Bright Steel Products Non-Destructive Testing - Ultrasonic Testing of Steel Bars Steel - Hardenability Test by End Quenching (Jominy Test) Steel - Micrographic Determination of the Apparent Grain Size Non-Destructive Testing - Eddy Current Testing - General Principles Technical Product Documentation - Heat-Treated Ferrous Parts - Presentation and Indications Microscopic Examination of Special Steels Using Standard Diagrams to Assess the Content of Non-Metallic Inclusions Semi-Finished Products (Input Stock and Solid Forming Blanks) Made of Quenched and Tempered Steels, Steels for Induction Hardening, FerriticPearlitic Steels for Precipitation Hardening (AFP Steels), Bainitic Steels Forged Crankshaft Blanks and Ready-to-Install Crankshafts Forged Connecting Rods Negative List – Constituents of Process Materials General Requirements – Environmental Protection, Hazardous Substances, Dangerous Goods – Negative Substance List for the Selection of Materials Skived Round Steel Bars and Skived Tubes Determination of Equations by Multiple Regression for the Calculation of Hardenability in the Jominy End Quench Test on the Basis of the Chemical Composition of Steels Ultrasonic Immersion Testing Method of Determining the Macroscopic Cleanliness Rate of Rolled or Forged Steel Bars

Terms and definitions

See the corresponding standards. NFN: Not for new designs

4

General requirements

For safety requirements, homologation (in particular, exhaust emissions) and quality, the existing statutory requirements and laws shall be complied with. In addition, the relevant requirements of the Daimler Group apply. All materials, procedures, processes, components, and systems shall conform to the current statutory requirements regarding regulated substances and recyclability. DBL 8585 shall be observed. Copyright Daimler AG



DBL 4028:2016-02, page 5

5

Abbreviated material designation for documentation

A material is uniquely described by the material name and/or material number as well as the product version. In this process, product version .00 describes the basic version of the material as per this DBL. e.g. Steel DIN EN 10083-3 – 1.7225 (42CrMo4) +DBL 4028.00 Steel DBL 4028 – 71MnVS4 +DBL 4028.00 If required, the heat treatment condition and the tensile strength in megapascals (MPa) to be achieved by heat treatment can be stated after the material designation. e.g. Steel DIN EN 10083-3 – 1.7225 (42CrMo4) +QT 1000-2000 +DBL 4028.00 For drawing entries without indications of the strength to be achieved by heat treatment, this data shall be provided based on DIN ISO 15787 in plain text on the drawing. e.g. Steel DIN EN 10083-3 – 1.7225 (42CrMo4) +QT* +DBL 4028.00 *Cooled from hot-working temperatures in a controlled process to a strength of 1000 – 2000 MPa. Refer to DBL 4532 and DIN ISO 15787 for t he specifications of heat treatment and mechanical properties.

6

Specifications

6.1

Material standards

Materials as per this DBL are described in the following standards: DIN EN 10083 DIN EN 10263 DIN EN 10267 DIN EN 10277 Refer to Sections 6.2, 6.3, 6.4, 0, 6.6, and 6.7 for additional specifications. • • • •

In the event of deviations from the specifications of this DBL or the DIN, EN, or ISO standards, the supplier shall prepare a detailed deviation analysis and submit it to the materials and process engineering department of the customer plant for approval. The material-specific Annexes A to P specify the chemical composition and hardenability of steels that are not specified by the standards listed herein or have a deviating chemical composition or hardenability compared with these standards and/or this section. Additional specifications shall be permitted using drawing entries, requirement specifications, ID/data cards, etc.

6.2

Manufacturing process

Melting process Electric arc furnace or blast furnace and BOF converter. Any deviating methods shall be indicated and require approval by the customer plant. •

Deoxidation All steels conforming to this DBL shall be killed. •




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Vacuum treatment All steels as per this DBL shall be subjected to vacuum treatment. Any deviating processes without vacuum treatment shall ensure that other measures (e.g., heat treatment) are taken to appropriately reduce the gas content of the melt. These deviating processes shall be indicated and require approval by the customer plant. •

Casting process Ingot casting or continuous casting. The degree of reduction from the casting cross-section to the rolled product (semi-finished products, steel bars) shall be 6:1 at minimum. The materials and process engineering department of the customer plant can authorize the supplier of solid forming blanks to use input stock with a minimum degree of reduction of 4:1 if the process guarantees sufficient forming of the solid forming part. •

For parts sensitive to distortion, the shape of the casting cross-section (round, square, or rectangular) shall be agreed upon with the customer plant.

6.3

Chemical composition

Unless otherwise specified, all indications on the chemical composition refer to the melt analysis. In the case of arbitration the unit analysis with the permissible deviations of the corresponding standard shall apply. 6.3.1

Ready-to-install parts

For ready-to-install components which are not subjected to further manufacturing or heat treatment processes at Daimler AG plants, the specifications for t he chemical composition indicated in the standards listed under Section 6.1, or the specifications in accordance with material-specific Annexes A to P shall apply. 6.3.2

Semi-finished products (input stock, solid forming blanks)

The following additional specifications shall apply to all deliveries of semi-finished products which are subjected to further manufacturing and/or heat treatment processes at Daimler AG plants: Sulfur content Components that do not undergo machining in the customer plant shall be subject to the specifications for sulfur content as per the standards listed in Section 6.1. Components that undergo machining in the customer plant shall maintain a controlled sulfur content of 0,020 to 0,040 %. The sulfur content of the steels in the material-specific Annexes A to P or according to specific agreements with the customer plant shall apply, in deviation therefrom. •

Trace elements Trace elements, i.e. all elements that are not listed in the specifications as alloying elements or required for finish treatment of the melt shall not be purposefully added to the melt without approval by the customer plant. Adequate measures shall be taken to prevent use of such elements from scrap or any other substances used in production which impair the hardenability, mechanical properties, or usability. In this context, DIN EN 10020, Table 1, only describes the difference between unalloyed and alloyed steel. The limit values stated therein shall not define a permissible alloy content limit for materials as per this DBL. •




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The following restrictions shall apply: Cr Mo Ni Cu Sn Cu + 10*Sn Ti

= ≤ ≤ ≤ ≤ ≤ ≤

0,10 - 0,20 % 0,07 % 0,25 % 0,25 % 0,03 % 0,50 % 0,0050 %

V Nb B Sb As Pb

≤ ≤ ≤ ≤ ≤ ≤

0,009 % 0,008 % 0,0005 % 0,0050 % 0,050 % 0,10 %

Ferritic-pearlitic steels for precipitation hardening (AFP steels) AFP steels as per DIN EN 10267 undergoing additional processing and/or heat treatment at Daimler AG plants shall be subject to the material-specific Annex G; ready-to-install components shall be subject to the specifications as per DIN EN 10267. Additional AFP steels are described in the material-specific Annexes A to P. •

Special treatments Special melt treatments, e.g. to improve the machinability, shall be approved by the materials and process engineering department of the customer plant. •

Restrictions on the chemical analysis Depending on component and production-specific conditions, restrictions and deviations may become necessary. These shall be agreed upon by the responsible development department of Daimler AG, the materials and process engineering department of the customer plant, and the supplier. The data shall be documented in the relevant specification documents (e.g. drawing, requirement specifications). •

6.4

Hardenability

Suppliers shall select the hardenability of components and input stock supplies that are not subject to heat treatment at Daimler AG plants so that the required mechanical and technical component specifications are achieved in a reliable process. The hardenability bands as per material-specific Annexes A to P shall apply to components and input stock supplies that are subject to heat treatment at the Daimler AG plants. If the material is not defined in the material-specific Annexes A to P, the hardenability bands of the standards listed in Section 6.1 shall apply. Depending on component and production-specific conditions, restrictions and deviations may become necessary. These shall be agreed upon by the responsible development department of Daimler AG, the materials and process engineering department of the customer plant, and the supplier. The data shall be documented in the relevant specification documents (e.g. drawing, requirement specifications).




DBL 4028:2016-02, page 8

6.5

Internal soundness

The following shall apply in addition to the standards listed in Section 6.1: Macro slags, flakes, porosities, shrinkage cavities and cracks are not permissible. 6.5.1

Microscopic degree of purity

The obligatory limits of the degree of purity in terms of microscopic inclusions are as follows: Determination in accordance with DIN 50602:1998-09, method K, sum total index number (oxides). Table 2: Limits of the degree of purity in terms of inclusions Diameter d or cross-section Sum total index number with identical area K [mm] ≤ 140 < d 200 K4 ≤ 30 100 < d 140 K4 ≤ 25 ≤ 70 < d 100 K4 ≤ 25 ≤ 35 < d 70 K4 ≤ 20 ≤ 17 < d 35 K3 ≤ 25 ≤ ≤ 8 < d 17 K3 ≤ 20 ≤ d 8 K2 ≤ 25

6.5.2

Macroscopic degree of purity

Depending on the application, e.g. for running gears, a sum total index number as per SEP 1927 can be required. The determination of the macroscopic degree of purity shall be carried out using ultrasonic immersion technology as per SEP 1927.

6.6

Austenitic grain size

All steels according to this DBL shall have an austenitic grain size of G = 5 or finer, determined in accordance with DIN EN ISO 643.

6.7

Suitability for induction hardening

All steels conforming to this DBL with a lower C content target value of > 0,30 % shall be capable of induction hardening. This is primarily expressed by the following properties: Insensitivity to short-term intense heating; i.e. no early coarse-grain growth Largely segregation free No grain boundary precipitation Good austenitization capability, if determined from the melting process • • • •

7

Tests

7.1

Test methods

This section describes the methodology of the tests to be carried out. The tests that shall be applied in individual cases and the testing frequency are described in Section 7.2. 7.1.1

Chemical composition testing

The chemical composition (unit) analysis shall be carried out using a suitable method as per the state of the art, e.g. spectral analysis.




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7.1.2

Testing the hardenability

The hardenability can be determined by suitable calculation according to the set of equations of SEP 1664 applicable in each case. When using other sets of formulas the steel works shall provide evidence of suitability using the end quench test as per DIN EN ISO 642. In the case of arbitration, the hardenability test by end quenching in accordance with DIN EN ISO 642 shall be used. Removing samples directly from the continuous or ingot casting is not permitted. 7.1.3

Testing the internal soundness

Series tests as per the state of the art using standardized (ultrasonic testing as per DIN EN 10308 and DIN EN 10160, ultrasonic immersion testing as per SEP 1927, eddy current tests as per DIN EN ISO 15549, etc.) or validated methods shall be applied to guarantee there are no defects as listed in Section 0. 7.1.3.1 Ultrasonic testing as per SEP 1927 The determination of the macroscopic degree of purity can be carried out on the delivery product (steel bars or semi-finished products) or specifically for batch testing at the start of the melt or on the ingot casting head. In the event of tests on the delivery product it shall be ensured that these are carried out in the area with the largest final dimensions. The removal of samples shall be carried out on a minimum of two different bars. The materials and process engineering department of the customer plant can require batch testing. The degree of reduction shall be between 4:1 and 6:1 for batch testing as per SEP 1927. The following shall apply: Sum total index number

If necessary, this value shall be defined specifically for the application

Sensitivity class

4 with KSR 0,35 mm

Test volume

Test group b (2 dm³)

Test area

For dimensions up to 60 mm diameter / edge length, the whole cross-section shall be tested. For greater dimensions the test area shall be 30 mm from the surface.

7.1.3.2 Determination of the microscopic degree of purity The determination of the microscopic degree of purity shall be performed as per DIN 50602:1998-09, method K, sum total index number (oxides). 7.1.4

Testing the grain size

The grain size shall be tested metallographically as per DIN EN ISO 643.

7.2

Test frequency

As per ISO/TS 16949 the supplier is required to monitor and measure the product characteristics to verify compliance with the product requirements. Proof of the compliance with the acceptance criteria shall be maintained. The testing frequency shall be specified on the basis of the risk analysis results (failure mode and effects analysis, process validation, product validation, continuous improvement process) by suppliers to guarantee that product implementation is free of defects. A minimum specification of the testing frequency by Daimler AG can be defined in specifications (e.g. drawing entry "Technically free of cracks as per MBN 10456, test severity 100 %").




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7.3

Test certificates

7.3.1

Inspection certificate in accordance with DIN EN 10204 (plant certificate)

An inspection certificate 3.1 in accordance with DIN EN 10204 shall be provided for each batch, or each delivery in case of different delivery states. The inspection certificate shall contain the following data and test results in addition to the standard requirements as per DIN EN 10168: • • • • • • • • • • • • • •

Steel works and location Melting process and casting type, casting format Degree of reduction (initial cross-section / bar or billet cross-section) Material designation and dimensions Batch number Heat treatment condition Chemical composition (C, Si, Mn, P, S, Cr, Ni, Mo, Cu, Al, Ti, V, Nb, W, Co, N, B, Sn, Sb, As, Pb, Bi) Austenitic grain size Hardenability values with an indication whether they are calculated or measured values Strength/hardness values Certificates for crack, ultrasound, and eddy current testing and tests for mixed-up materials Microscopic and macroscopic degree of purity Data on the surface condition as per DBL 4532 Freedom from radioactivity as per DBL 8585

Any additional indications of inspection results shall be agreed between the supplier and the customer plant. The retention time at the supplier shall be a minimum of 15 years from the creation date. Submission of the test report to the customer plant is necessary only on request. 7.3.2

Test report for ultrasonic immersion technology as per SEP 1927

The written test report in accordance with SEP 1927 shall be enclosed, containing the following minimum information: Name of the steel manufacturer Number of batch tested Scope of testing: tested areas and applied sensitivity class Track width Size of the "dead zone" Production level according to which the ultrasonic test was completed Degree of reduction and test specimen dimensions Test facilities used (scanner, computer, ultrasound device, test head) Test results Name and signature of the inspector • • • • • • • • • •




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Annex A (normative) Material specification 39MnCrB6-2 mod. (formerly 30MnB5+DBL 4552) Chemical analysis Table 3: A-1 / Chemical analysis of 39MnCrB6-2 mod. Element [% by mass] Product version .00 C

0,30 – 0,40

Si

0,15 – 0,50

Mn

1,20 – 1,80

P

≤ 0,035

S

0,025 – 0,045 *

Cr

0,30 – 0,50

Mo

≤ 0,10

Ni

≤ 0,25

Cu

≤ 0,25

Al

0,020 – 0,060

Sn

≤ 0,030

Cu + 10xSn

≤ 0,50

Ti

0,010 – 0,040

V

≤ 0,13

Nb

≤ 0,008

B

0,0010 – 0,0040

Sb

≤ 0,005

As

≤ 0,05

Pb

≤ 0,10

*) For component parts on which Daimler does not carry out additional machining, the specification of the minimum sulfur content, i.e. S ≤ 0,035 %, shall not apply. The specifications as per DIN EN 10083-3 shall apply to the limit deviations of the unit analysis from the limits valid for melt analysis as per Table 3.




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Annex B (normative) Material specification 34MnCrMo6-4 Chemical analysis Table 4: B-1 / Chemical analysis of 34MnCrMo6-4 Element [% by mass]

Product version .00

C

0,32 – 0,36

Si

≤ 0,40

Mn

1,50 – 1,80

P

≤ 0,035

S

0,025 – 0,040 *

Cr

0,95 – 1,20

Mo

0,30 – 0,40

Ni

≤ 0,25

Cu

≤ 0,25

Al

0,010 – 0,050

Sn

≤ 0,030

Cu + 10xSn

≤ 0,50

Ti

≤ 0,005

V

≤ 0,009

Nb

≤ 0,008

B

≤ 0,0005

Sb

≤ 0,005

As

≤ 0,05

Pb

≤ 0,10


Hardenability The hardenability shall be coordinated with the materials and process engineering department of the customer plant.




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Annex C (normative) Material specification C45E (formerly: Ck45)

Chemical analysis Table 5: C-1 / Chemical analysis of C45E Element [% by mass]

Product version .00

C

0,42 – 0,50

Si

≤ 0,40

Mn

0,50 – 0,80

P

≤ 0,030

S

0,020 – 0,040 *

Cr

0,10 – 0,20

Mo

≤ 0,07

Ni

≤ 0,25

Cu

≤ 0,25

Al

0,010 – 0,050

Sn

≤ 0,030

Cu + 10xSn

≤ 0,50

Ti

≤ 0,005

V

≤ 0,009

Nb

≤ 0,008

B

≤ 0,0005

Sb

≤ 0,005

As

≤ 0,05

Pb

≤ 0,10





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Annex D (normative) Material specification 38MnS6 Chemical analysis Table 6: D-1 / Chemical analysis of 38MnS6 Element [% by mass]

Product version .00

C

0,36 – 0,40

Si

0,20 – 0,65

Mn

1,30 – 1,60

P

≤ 0,035

S

0,045 – 0,065

Cr

0,10 – 0,20

Mo

≤ 0,07

Ni

≤ 0,25

Cu

≤ 0,25

Al

0,010 – 0,050

Sn

≤ 0,030

Cu + 10xSn

≤ 0,50

Ti

≤ 0,005

*

V

≤ 0,009

*

Nb

≤ 0,008

B

≤ 0,0005

Sb

≤ 0,005

As

≤ 0,05

Pb

≤ 0,10

*) Additions of Ti and V by alloying shall be agreed upon with the customer plant as part of the supply of samples. The specifications as per DIN EN 10267 shall apply to the limit deviations of the unit analysis from the limits valid for melt analysis as per Table 6.




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Annex E (normative) Material specification 35MnS4 (formerly: C35 mod.) Chemical analysis Table 7: E-1 / Chemical analysis of 35MnS4 Element [% by mass]

Product version .00

C

0,32 – 0,39

Si

0,40 – 0,80

Mn

0,80 – 1,00

P

≤ 0,035

S

0,045 – 0,065

Cr

0,10 – 0,20

Mo

≤ 0,10

Ni

≤ 0,25

Cu

≤ 0,25

Al

0,010 – 0,050

Sn

≤ 0,030

Cu + 10xSn

≤ 0,50

Ti

≤ 0,005

V

≤ 0,009

Nb

≤ 0,008

B

≤ 0,0005

Sb

≤ 0,005

As

≤ 0,05

Pb

≤ 0,10

The specifications as per DIN EN 10267 shall apply to the limit deviations of the unit analysis from the limits valid for melt analysis as per Table 7.




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Annex F (normative) Material specification C70S6 Chemical analysis Table 8: F-1 / Chemical analysis of C70S6 Element [% by mass]

Product version .00

C

0,68 – 0,73

Si

0,15 – 0,25

Mn

0,50 – 0,55

P

≤ 0,035

S

0,050 – 0,070

Cr

0,10 – 0,20

Mo

≤ 0,10

Ni

≤ 0,25

Cu

≤ 0,25

Al

≤ 0,030

Sn

≤ 0,030

Cu + 10xSn

≤ 0,50

N

0,0120 – 0,0160

Ti

≤ 0,012

V

0,03 – 0,05

Nb

≤ 0,008

B

≤ 0,0005

Sb

≤ 0,005

As

≤ 0,05

Pb

≤ 0,10





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Annex G (normative) Material specification for AFP steels Note: DIN EN 10267 shall apply to ready-to-install parts made of AFP steels. Chemical analysis Table 9: G-1 / Chemical analysis of AFP steels subject to P treatment at the Daimler AG plants Element [% by mass]

19MnVS6 1.1301

30MnVS6 1.1302

38MnVS6 1.1303

46MnVS6 1.1304

46MnVS3 1.1305

Product version .00

.00

.00

.00

.00

C

0,15 – 0,22

0,27 – 0,33

0,36 – 0,40

0,42 – 0,47

0,45 – 0,50

Si

0,50 – 0,70

0,50 – 0,70

0,50 – 0,70

0,50 – 0,80

0,50 – 0,70

Mn

1,20 – 1,60

1,40 – 1,60

1,30 – 1,60

1,30 – 1,60

0,70 – 1,00

P

≤ 0,035

≤ 0,035

≤ 0,035

≤ 0,035

≤ 0,035

S

0,020 – 0,060

0,030 – 0,060

0,045 – 0,060

0,020 – 0,035

0,045 – 0,065

Cr

0,10 – 0,20

0,10 – 0,20

0,10 – 0,20

0,10 – 0,20

0,10 – 0,20

Mo

≤ 0,07

≤ 0,07

≤ 0,07

≤ 0,07

≤ 0,07

Ni

≤ 0,25

≤ 0,25

≤ 0,25

≤ 0,25

≤ 0,25

Cu

≤ 0,25

≤ 0,25

≤ 0,25

≤ 0,25

≤ 0,25

Al

0,010 – 0,050

0,010 – 0,050

0,010 – 0,050

0,010 – 0,050

0,010 – 0,050

Sn

≤ 0,030

≤ 0,030

≤ 0,030

≤ 0,030

≤ 0,030

Cu + 10xSn

≤ 0,50

≤ 0,50

≤ 0,50

≤ 0,50

≤ 0,50

N

0,012 – 0,020

0,012 – 0,020

0,012 – 0,020

0,012 – 0,020

0,012 – 0,020

Ti

*

*

*

*

*

V

0,08 – 0,13

0,08 – 0,13

0,08 – 0,13

0,10 – 0,15

0,08 – 0,13

Nb

≤ 0,008

≤ 0,008

≤ 0,008

≤ 0,008

≤ 0,008

B

≤ 0,0005

≤ 0,0005

≤ 0,0005

≤ 0,0005

≤ 0,0005

Sb

≤ 0,005

≤ 0,005

≤ 0,005

≤ 0,005

≤ 0,005

As

≤ 0,05

≤ 0,05

≤ 0,05

≤ 0,05

≤ 0,05

Pb

≤ 0,10

≤ 0,10

≤ 0,10

≤ 0,10

≤ 0,10

*) Titanium shall only be added following agreement and approval by the materials and process engineering department of the customer plant. In any other case, the following applies: Ti ≤ 0,005 %. The specifications as per DIN EN 10267 shall apply to the limit deviations of the unit analysis from the limits valid for melt analysis as per Table 9.




DBL 4028:2016-02, page 18

Annex H (normative) Material specification 30MnVS6+Ti Chemical analysis Table 10: H-1 / Chemical analysis of 30MnVS6+Ti Element [% by mass]

Product version .00

C

0,27 – 0,33

Si

0,50 – 0,70

Mn

1,40 – 1,60

P

≤ 0,025

S

0,030 – 0,060

Cr

0,10 – 0,25

Mo

≤ 0,07

Ni

≤ 0,25

Cu

≤ 0,25

Al

0,010 – 0,050

Sn

≤ 0,030

Cu + 10xSn

≤ 0,50

N

0,012 – 0,020

Ti

0,015 – 0,035

V

0,08 – 0,13

Nb

≤ 0,008

B

≤ 0,0005

Sb

≤ 0,005

As

≤ 0,05

Pb

≤ 0,10





DBL 4028:2016-02, page 19

Annex I (normative) Material specification 36MnVS4

Chemical analysis Table 11: I-1 / Chemical analysis of 36MnVS4 Element [% by mass]

Product version .00

C

0,34 – 0,38

Si

0,60 – 0,75

Mn

0,95 – 1,05

P

≤ 0,045

S

0,065 – 0,085

Cr

≤ 0,25

Mo

≤ 0,06

Ni

≤ 0,20

Cu

≤ 0,25

Al

≤ 0,030

Sn

≤ 0,030

Cu +10xSn

≤ 0,50

N

0,015 – 0,020

Ti

≤ 0,005

V

0,25 – 0,35

Nb

≤ 0,008

B

≤ 0,0005

Sb

≤ 0,005

As

≤ 0,05

Pb

≤ 0,10





DBL 4028:2016-02, page 20

Annex J (normative) Material specification 35MnVS4-3 (formerly: 38MnVS6mod) Chemical analysis Table 12: J-1 / Chemical analysis of 35MnVS4-3 Element [% by mass]

Product version .00

C

0,33 – 0,37

Si

0,50 – 0,65

Mn

1,00 – 1,15

P

< 0,025

S

0,015 – 0,030

Cr

0,10 – 0,20

Mo

0,02 – 0,07

Ni

≤ 0,20

Cu

≤ 0,20

Al

0,010 – 0,025

Sn

≤ 0,030

Cu + 10xSn

≤ 0,50

N

0,015 – 0,020

Ti

< 0,025

V

0,25 – 0,35

Nb

≤ 0,008

Sb

≤ 0,005

As

≤ 0,05

Pb

≤ 0,10





DBL 4028:2016-02, page 21

Annex K (normative) Material specification 46MnVNbS5 (formerly: 46MnVS6mod) Chemical analysis Table 13: K-1 / Chemical analysis of 46MnVNbS5 Element [% by mass]

Product version .00

C

0,44 – 0,48

Si

0,40 – 0,70

Mn

1,00 – 1,200

P

≤ 0,025

S

0,055 – 0,070

Cr

≤ 0,30

Mo

≤ 0,08

Ni

≤ 0,20

Cu

≤ 0,25

Al

≤ 0,030

Sn

≤ 0,030

Cu + 10xSn

≤ 0,50

N

0,0150 – 0,0220

Ti

≤ 0,005

V

0,10 – 0,18

Nb

0,020 – 0,045

B

≤ 0,0005

Sb

≤ 0,005

As

≤ 0,05

Pb

≤ 0,10





DBL 4028:2016-02, page 22

Annex L (normative) Material specification 70MnVS4 Chemical analysis Table 14: L-1 / Chemical analysis of 70MnVS4 Element [% by mass]

Product version .00

C

0,68 – 0,73

Si

0,15 – 0,25

Mn

0,80 – 1,00

P

≤ 0,035

S

0,050 – 0,070

Cr

0,10 – 0,20

Mo

≤ 0,05

Ni

≤ 0,25

Cu

≤ 0,25

Al

≤ 0,030

Sn

≤ 0,030

Cu + 10xSn

≤ 0,50

N

0,0120 – 0,0200

Ti

≤ 0,005

V

0,10 – 0,22

Nb

≤ 0,008

B

≤ 0,0005

Sb

≤ 0,005

As

≤ 0,05

Pb

≤ 0,10





DBL 4028:2016-02, page 23

Annex M (normative) Material specification 71MnVS4 Chemical analysis Table 15: M-1 / Chemical analysis of 71MnVS4 Element [% by mass]

Product version .00

C

0,69 – 0,73

Si

0,20 – 0,30

Mn

0,90 – 1,00

P

≤ 0,025

S

0,055 – 0,065

Cr

0,15 – 0,25

Mo

≤ 0,05

Ni

0,20 – 0,30

Cu

≤ 0,25

Al

0,020 – 0,030

Sn

≤ 0,025

Cu + 10xSn

≤ 0,50

N

0,012 – 0,020

Ti

≤ 0,005

V

0,22 – 0,26

Nb

≤ 0,008

B

≤ 0,0005

Sb

≤ 0,005

As

≤ 0,05

Pb

≤ 0,10

Table M-1: Chemical analysis of 71MnVS4. The specifications as per DIN EN 10267 shall apply to the limit deviations of the unit analysis from the limits valid for melt analysis as per Table 15.




DBL 4028:2016-02, page 24

Annex N (normative) Material specification 12CrMnMoV7-5 Chemical analysis Table 16: N-1 / Chemical analysis of 12CrMnMoV7-5 Element [% by mass]

Product version .00

C

0,10 – 0,15

Si

0,15 – 0,30

Mn

1,10 – 1,40

P

≤ 0,015

S

≤ 0,015

Cr

1,60 – 1,80

Mo

0,10 – 0,20

Ni

0,23 – 0,35

Cu

≤ 0,25

Al

0,020 – 0,030

Sn

≤ 0,030

Cu + 10xSn

≤ 0,50

N

0,014 – 0,022

Ti

≤ 0,005

V

0,05 – 0,14

Nb

0,020 – 0,030

B

≤ 0,0005

Sb

≤ 0,005

As

≤ 0,05

Pb

≤ 0,10

The specifications as per DIN EN 10083-3 shall apply to the limit deviations of the unit analysis from the limits valid for melt analysis as per Table 16.




DBL 4028:2016-02, page 25

Annex O (normative) Material specification 19MnB4 mod. Chemical analysis Table 17: O-1 / Chemical analysis of 19MnB4 mod. Element [% by mass]

Product version .00

C

0,16 – 0,19

Si

0,60 – 0,90

Mn

1,60 – 1,90

P

≤ 0,015

S

≤ 0,015

Cr

1,00 – 1,30

Mo

0,02 – 0,10

Ni

0,25 – 0,50

Cu

≤ 0,10

Al

0,005 – 0,020

Sn

≤ 0,030

Cu + 10*Sn

≤ 0,50

Ti

≤ 0,050

V

≤ 0,050

Nb

≤ 0,008

B

0,0015 – 0,0050

Sb

≤ 0,005

As

≤ 0,05

Pb

≤ 0,10

The specifications as per DIN EN 10083-3 shall apply to the limit deviations of the unit analysis from the limits valid for melt analysis as per Table 17.




DBL 4028:2016-02, page 26

Annex P (informative) Material specification Cf53 (NFN) (Replacement for new designs: C50E or C55E DIN EN 10083) Chemical analysis Table 18: P-1 / Chemical analysis of Cf53 Element [% by mass]

Product version .00

.10, .11, .13

C

0,50 – 0,57

0,49 – 0,53

Si

0,15 – 0,35

0,15 – 0,40

Mn

0,40 – 0,75

0,40 – 0,50

P

≤ 0,025

≤ 0,025

S

0,020 - 0,040 *

0,020 – 0,040 *

Cr

0,10 – 0,20

0,10 – 0,15

Mo

≤ 0,07

≤ 0,07

Ni

≤ 0,25

≤ 0,25

Cu

≤ 0,25

≤ 0,25

Al

0,010 – 0,050

0,010 – 0,050

Sn

≤ 0,030

≤ 0,030

Cu + 10xSn

≤ 0,50

≤ 0,50

Ti

≤ 0,005

≤ 0,005

V

≤ 0,009

≤ 0,009

Nb

≤ 0,008

≤ 0,008

B

≤ 0,0005

≤ 0,0005

Sb

≤ 0,005

≤ 0,005

As

≤ 0,05

≤ 0,05

Pb

≤ 0,10

≤ 0,10





DBL 4028:2016-02, page 27

Annex Q (informative) Materials not for new designs (NFN) Recoding of old (NFN) to new material designations Table 19: Q-1 / Recoding of old (NFN) to new material designations Old designation/NFN

New designation

30Mn5

Steel DIN EN 10083-2 – 1.1170 (28Mn6) +DBL 4028.00

30Mn5+DBL 4552

Steel 39MnCrB6-2 +DBL 4028.00

C35 mod.

Steel 35MnS4 +DBL 4028.00

Ck45 product version 00

Steel DIN EN 10083-2 – 1.1191 (C45E) +DBL 4028.00

Ck45 product version 10

n/a

Cf53

Steel DIN EN 10083-2 – 1.1206 (C50E) +DBL 4028.00 Steel DIN EN 10083-2 – 1.1203 (C55E) +DBL 4028.00

38MnVS5

Steel DIN EN 10267 – 1.1303 (38MnVS6) +DBL 4028.00

38MnVS6 mod.

Steel 35MnVS4-3 +DBL 4028.00

46MnVS6

Steel DIN EN 10267 – 1.1304 (46MnVS6) +DBL 4028.00

46MnVS6 mod.

Steel 46MnVNbS5 +DBL 4028.00




DBL_4028_2016-02

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