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DIN EN 10083-3:2007-01
National foreword This standard has been prepared by ECISS/TC 23 !Steels for heat treatment, alloy steels and free-cutting -cutting steels " Qualities and dimensions# (Secretariat: Germany). The responsible German body involved in its preparation was the and Iron Standards Committee), Technical Committee 05/1.
(Steel (Steel ee Normenausschuss Eisen und d Stahl (Steel
Amendments
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This standard differs from DIN EN 10083-1:1996-10, DIN EN 10083-3:1996-02 andd DIN DIN 17212:1972-08 1172 17212: 72112:19 1972772-08 -08 as a follows: a) This series of standards standards (DIN EN 10083-1 10083-1 to -3) has has been thematically restructured. restructured. structure struc tured. d. Prev Previousl P Prreviously, Previously, iously, y,, the th t three three parts were divided up as follows : Part 1: Technical delivery delivery conditions for for special steels Part 2: Technical delivery delivery conditions for unalloyed unalloyed quality steels Part 3: Technical delivery delivery conditions for for boron steels steels The three parts are now divided up in a more appropriate manner: anner: Part 1: General technical technical delivery delivery conditions Part 2: Technical delivery delivery conditions for non-alloy non-alloy steelss Part 3: Technical delivery delivery conditions conditions for alloy steels
This restructuring was achieved by including thee following following ing general ggeneral en information info r " which was previously given in all three parts " in the first part only: figures gur res re es showing showing showin g thee location locatio loca tio of test pieces and samples; and
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D D D I N I N I N E E 1 N N 7 2 1 1 1 0 0 2 0 0 : 8 8 1 3 3 9 - -1 7 3 : : 2 1 1 0 9 9 8 9 9 6 1 - -1 0 2 0 , , 2 1 0 9 0 9 6 6 -1 -1 0 0
D I N 1 7 2 0 0 : 1 9 5 1 -1 2 , 1 9 6 9 -1 2 , 1 9 8 4 -1 1 , 1 9 8 7 0 3
D I N E N 1 0 0 8 3 3 : 2 0 0 7 0 1
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EUROPEAN STANDARD
EN 10083-3
NORME EUROPÉENNE EUROPÄISCHE NORM
August 2006
ICS 77.140.10
Supersedes edes EN 10083-3:1995 1 199
English Version
Steels for quenching and tempering - Part 3: Technical chnical delivery e conditions for alloy steels Aciers pour trempe et revenu - Partie 3: Conditions techniques de livraison des aciers alliés
This European Standard was approved by CEN on 30 June 2006.
.
Vergütungsstähle ütungs ütu ngsstä stähle hle - Teil Teil Teil eil 3: 3: Technische Techni Tec hnisc scc Lieferbedingungen ffür ür legierte legierte Stähle St
egulations which which hichstipulate stipulate s ti tethe the conditions co CEN members are bound to comply with the CEN/CENELEC Internal Regulations for giving this European Standard the status of a national standard without any alteration. Up-to-date o-datelists listsand andbibliographical bibliographi bi aphiccal alreferences r concerning such national standards may be obtained on application to the Central Secretariat or orto toany anyCEN CENmember. member. b This European Standard exists in three official versions (English, h, French, French,,German). French, German). German G ).AAversion vversion ersion ersionini any other language made by translation under the responsibility of a CEN member into its own language age and and notified notif iied edtotothe theCentral CentralSecretariat S has the same status as the official versions. CEN members are the national standards bodies of Austria, s rr aa, Belgium, e g um Cyprus, ypruss,Czech zecc Republic, Denmark, Estonia, Finland, France, ze
EN 10083-3:2006 (E)
Contents
Page g
Foreword..............................................................................................................................................................3 ...........................3 ............ 1
Scope ....................................................................... ................................................................................................................................. ...............................................................................4 ................................4 .....................4 ... ..4
2
Normative references .............................................................. ............................................................................................................................4 ..............................................................4 .....................................4 ..... 4
3
Terms and definitions ................................................................................................. ...........................................................................................................................5 ....................... .... .. .... ..........................5 . .. .... .... .... .... ........... .... .... .... .... ....
4 4.1 4.2
Classification and designation .............................................................................................. .............................................................................................................5 .................................. ... ................5 .... ........ Classification..........................................................................................................................................5 ...................... ....................... .. .... Designation ............................................................................................... ............................................................................................................................................5 ........................... .............................................5 ................ ................
5 5.1 5.2
Information to be supplied by the purchaser .....................................................................................5 .......................................... .... Mandatory information ...................................................................................................... ..........................................................................................................................5 .......................................... .... ... ....................5 Options ................................................................................ .............................................................................................................................................. .................................... ...................................................................6 . .... ...... .....6
6 6.1 6.2 6.3 6.4
Manufacturing process .................................................................................................. .........................................................................................................................6 .......................................... ..... ... .. ... ...... ...... ...... ..... .......................6 General....................................................................................................................................................6 .......................................... ... .... .... Deoxidation ................................................................................... ............................................................................................................................................7 .......................................... ...............................................................7 ... .... Heat treatment and surface condition at delivery y ..................................... ..............................................................................7 ... . .......... Cast separation ........................................................................... ......................................................................................................................................7 .......................................... .... ...........................................................7
7 7.1
Requirements ................................................................................ .........................................................................................................................................7 .......................................... .... ...........................................................................7 ...... Chemical composition, hardenability and d mechanical propertie properties ...................................................7
EN 10083-3:2006 (E)
Foreword This document (EN 10083-3:2006) has been prepared by Technical Committee ECISS/TC /TC 23 23 !Steels Steels for for heat heat treatment, alloy steels and free-cutting steels - Qualities and dimensions", the secretariat tariat of off which which ich isis held held dby by DIN. This European Standard shall be given the status of a national standard, either er by by publication publication of of an an identical id text or by endorsement, at the latest by February 2007, and conflicting national onal standards standards an r shall shall all be be e withdrawn at the latest by February 2007. This document supersedes EN 10083-3:1995. Together with Part 1 and Part 2 of this standard this part 3 is a revision vision of of the the following following European Eur Standards: EN 10083-1:1991 +A1:1996, Quenched and tempered steels eels !! Part Part 1: Part 1:: Technical Technica delivery conditions for Technica special steels EN 10083-2:1991 +A1:1996, Quenched and tempered red steels steel els els ! Part Part 2: 2: Technical Te delivery conditions for unalloyed quality steels EN 10083-3:1995, Quenched and tempered steels els ! Part Part 3: 3: Technical Technical delivery d conditions for boron steels
EN 10083-3:2006 (E)
1
Scope
This part of EN 10083, in addition to Part 1, specifies the technical delivery requirements for:
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semi-finished products, hot formed, e.g. e.g. blooms, billets, slabs (see NOTES 2 and 3 in EN 10083-1:2006, 083-1:2006, 083-1:2006, 006,
Clause 1), bars (see NOTE 2 in EN 10083-1:2006, Clause 1), rod, wide flats, hot-rolled strip and sheet/plate, forgings (see NOTE 2 in EN 10083-1:2006, Clause Clause 1),
manufactured from the direct hardening alloy steels for quenchingg and and tempering tempering ng and and the the e alloy flame and induction hardening steels and supplied in one of the heat treatment entt conditions en condi con diti itions tion ons s given given giv en n for forr the fo t different types of products in Table 1, lines 2 to 6, and in one of the surface conditions tions given given in in n Table Table e 2. 2.
The steels are generally intended for the fabrication of quenched nch ched ed and and an a d tempered, temp te mpe ered, flame fla fl or induction hardened machine parts. The requirements for mechanical properties given in this this tth hiis document docu do cume ment nt are are ar are restricted rres estr estric tric ic to the sizes given in Table 8.
EN 10083-3:2006 (E)
EN 10221, Surface quality classes for hot-rolled bars and rods ! Technical delivery conditions CR 10261, ECISS Information Circular 11 ! Iron and steel ! Review of available methods of chemical ical analysis analysis ana ly lysis EN 10308, 10308, Non destructive testing ! Ultrasonic testing of steel bars EN ISO 377, Steel and steel products ! Location and preparation of samples and test pieces pieces for mechanical ec testing (ISO 377:1997) EN ISO 642, Steel ! Hardenability test by end quenching (Jominy test) (ISO 642:1999) 999)
.
EN ISO 643, Steels Steels ! ! Micrographic determination of the apparent grain size (ISO 643:2003) : EN ISO 3887, Steels ! Determination of depth of decarburization (ISO 3887:2003) 87:2003) )
EN ISO 6506-1, Metallic materials ! Brinell hardness test ! Part 1: Test est method method (ISO (ISO 6506-1:2005) 6506-1: EN ISO 6508-1:2005, Metallic materials ! Rockwell hardness test st ! Part rt 1: Test method (scales A, B, C, D, E, F, G, H, K, N, T) (ISO 6508-1:2005) EN ISO 14284, Steel and iron ! Sampling and preparation ation of samples a le forr the determination of chemical composition (ISO 14284:1996)
3
Terms and definitions
For the purposes of this document, the termss and an definitions e given gi in EN 10083-1:2006 apply.
EN 10083-3:2006 (E)
5.2 Options A number of options are specified in this document and listed below. If the purchaser does not indicate e his wish to implement any of these options, the supplier shall act in accordance with the basic specification.. a) any particular heat treatment condition (see 6.3.2); b) any particular surface condition (see 6.3.3); c)
any verification verification of the product analysis (see 7.1.2.2 and A.5);
d) any requirement to the hardenability (+H, +HH, +HL) (see 7.1.3) and if agreed agreed ed the information informattiion o about about ut calculation of the hardenability (see 10.3.2); e) any verification of mechanical properties of reference test pieces in the quenched and a tempered e (+QT) condition (see A.1); f)
any verification of fine grain size (see 7.4 and A.2);
g) any requirements for the verification of non-metallic inclusion inclusion content ontent (see s 7.4 and n A.3); h) any requirement for internal soundness (see 7.5 7.5 and A.4); i)
any requirement relating to surface quality (see 7.6.3);
j)
any requirement regarding the permissible depth of of decarburization decarburization (see de (see 7.6.4); (s 7. 7.
EN 10083-3:2006 (E)
6.2 Deoxidation All steels shall be killed.
6.3 Heat treatment and surface condition at delivery 6.3.1
Untreated condition
Unless otherwise agreed at the time of enquiry and order, the products shall be delivered ivered in in in the the untreated, untreated, re i.e. i.. hot worked, condition.
.
NOTE Depending on the product shape and dimensions, not all steel grades ca can can n be be d deliv de delivered elliver ivered ed iin nin the the the hhhot worked untreated condition (e.g. steel grade 30CrNiMo8).
6.3.2
Particular heat treatment condition
If so agreed at the time of enquiry and order, the products shallll be be delivered delivered in in one one of of the heat-treatment conditions given in Table 1, lines 3 to 6. 6.3.3
Particular surface condition
If so agreed at the time of enquiry and order, the products cts ct s shall shalll be shal be delivered deliv del liver i ered ed with wi one of the particular surface wi conditions given in Table 2, lines 3 to 7.
6.4 Cast separation The products shall be delivered separated by cast.
EN 10083-3:2006 (E)
Where the steel is ordered without hardenability requirements, the requirements for mechanical propertiess specified in Table 8 for the quenched and tempered condition apply. In this case the hardenability values given in Table 5 are for guidance purposes only. The mechanical property values given in Table 8 apply to test pieces in the quenched and tempered ed condition condition condition it o which have been taken and prepared in accordance with EN 10083-1:2006, Figure 1 or Figures 22 and and 33 (see (see ee also footnote a in Table 1). 7.1.5
Surface hardness
For the hardness of surface hardened zones of steels intended for flame and induction induction hardening hardening de the the e specifications in Table 9 apply.
7.2 Machinability All steels delivered in the soft annealed (+A) condition are machinable. e. Where W here improved improved machinability mac is required, the grades with a specified sulphur range should be ordered ed and/or and/orr with with aa specific specific treatment to improve machinability (e.g. Ca treatment), see also Table 3, footnote c. c.
7.3 Shearability of semi-finished products and bars 7.3.1 Under suitable conditions (avoiding local stress peaks, ks,, pre-heating, ks pre-he pre-heat atin ing, g,, application a applic appl licat i atii of blades with a profile adapted to that of the product, etc.) all steels are shearable le in in the in the soft-annealed the s so soft oft-a -ann nnea eale led d (+A) ((+ + condition (see, however, footnote f to Table 7). 7.3.2
Steel grades without boron up to steel grade d 42CrMoS4 42C M S4 andd the th boron-alloy b steel grades 33MnCrB5-
EN 10083-3:2006 (E)
7.6.3 Where appropriate, requirements relating to the surface quality of the products shall be agreed ed upon upo at the time of enquiry and order, if possible with reference to European Standards. Sheet/plate and wide flats are delivered with surface class A, subclass 1 according to EN 10163-2 0163-2 unless un unless unless l otherwise agreed at the time of enquiry and order. Bars and rods are delivered with surface class A according to EN 10221 unless otherwise se agreed agreed at attthe tthetime time of enquiry and order. 7.6.4 Requirements relating to the permissible depth of decarburization may be be agreed agreed re at at the the e time time of enquiry and order. The depth of decarburization shall be determined in accordance with the micrographic micrographic method method specified sp in EN ISO 3887. 7.6.5 If suitability of bars and rods for bright drawing is required, this his shall shall be be agreed agreed re at at the the time of enquiry and order. 7.6.6 The removal of surface defects by welding shall only be be permitted permitted with with the the approval ap of the customer or his representative. If surface discontinuities are repaired, the method and maximum maxim max imum um depth dept de pth th of of removal of remov remo mov shall be agreed at the time of enquiry and order.
7.7 Dimensions, tolerances on dimensions s and shape a The nominal dimensions, tolerances on dimensions ensi en ns sion ons s and and shape and shap sh ape pe for forr the fo t product shall be agreed at the time of
EN 10083-3:2006 (E)
8.3 Tests to be carried out for specific inspection 8.3.1
Verification of hardenability, hardness and mechanical properties
For steels being ordered without hardenability requirements, i.e. without the symbol +H, +HH or +HL HL in in the the h designation, the hardness requirements or mechanical properties given for the relevant heat-treatment at-treatment en condition in Table 1, Column 8, subclause 2, shall with the following exception be verified. Thee requirement requirement nt given in Table 1, Footnote a (mechanical properties of reference test pieces), is only too be be verified verified ifif supplementary requirement A.1 is ordered. For steels being ordered with the symbol +H, +HH or +HL in the designation (see Tables ables 55 and and d 6), 6), unless unlesss otherwise agreed, only hardenability requirements according to Table 5 or 6 shall be verified. verified.. 8.3.2
Visual and dimensional inspection
.
A sufficient number of products shall be inspected to ensure compliance with the the specification. specification. ion.
9
Preparation of samples and test pieces
9.1 Selection and preparation of samples for chemical analysis analysis
The preparation of samples for product analysis shall be in accordance accordance with with h EN EN ISO ISO I 14284.
9.2 Location and orientation of samples and test est p pieces ieces ffor or mechanical mecha tests
EN 10083-3:2006 (E)
10.3 Hardness and hardenability hardenability tests tests 10.3.1 Hardness in treatment conditions +A and +S For products in treatment conditions +A (soft annealed) and +S (treated to improve shearability), ity), the the hardness h hardness es shall be measured in accordance with EN ISO 6506-1. 10.3.2 Verification of hardenability As far as available the manufacturer has the option to verify the hardenability by calculation. alcula alc ulatio tion. n. n. The The calculation calcula calc ulatio ul tio method is left to the discretion of the manufacturer. If agreed at the time of enquiry iry and and order order the the manufacturer manufa shall give sufficient information about the calculation for the customer to confirm rm the the result. result. If a calculation formula is not available or in the case of dispute an end quench ench en ch hardenability hard ha arden r ena abi bili lity ty test test te est shall s be carried out in accordance with EN ISO 642. The temperature for quenching hing hi ng shall shal sh alll comply ccom ompl o ply y with wit ith h table tta a 11. The hardness values shall be determined in accordance with EN ISO 6508-1, 8-1, scale scale C. C. 10.3.3 Surface hardness The surface hardness of steels after flame or induction hardening hardening harden ing (see (see Table Table 9) Table 9 shall be determined in accordance with EN ISO 6508-1, scale C.
10.4 Retests See EN 10083-1:2006, 10.4.
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I n a d d i t i o n , i t m a y b e a g r e e d t h a t t h e p r o d u c t s b e o i l e d o ,r w h e r e a p p r o p r i a t e , l i m e d o r p h o s p h a t e d .
7
6
O m o r H o t h a u t g e c h w r h i s o n r e k d e d a n d
5
4
a s c P g u o a r p n r e p d t e l i i i c m e t i u e d o l n a n b t y s r
3
2
1
a o U g t h n r e l e e e r s d w s i s e
S u r f a c e c o n d i t i o n a t d e l i v e r y
b H l o a s t t w c o l r e k a e n e d d a n d
p H i o c k t l w e d o r k e d a n d
c c U a o n s n f t t o i n r u m o e u d s l y
H o t w o r k e d N + o H n W e o r
+ R M
+ B C
+ P I
+ C C
-
-
x
x
x
( p f b b r i n S l s u o o i l d i e l o c x e h u s h m m t s s a c e i ) , s t s d -
-
x
x
x
-
x
B a r s
-
x
x
x
-
x
R o d
-
-
x
x
-
x
p r o d F l u a c t t s H ( s a e m 1 e m : n e 2 0 o t r 0 e 6 2 a n , d C i d l n a r E u N o s p e 1 o f 1 0 r ) 0 g 8 i n 3 g - s
x
-
-
x
x
-
x
a
a
-
-
2
S y m 3 b o l
-
-
1
4
5 x i n d i c a t e 6 s i n g e n e 7 r a l a p p l i c a b l e f o r 8
N o 9 t e
T a b l e 2 ! S u r f a c e c o n d i t i o n a t d e l i v e r y
E N 1 0 0 8 3 3 : 2 0 0 6 ( E )
EN 10083-3:2006 (E)
Table 4 ! Permissible deviations between the product analysis and the limiting values s given in Table 3 for the cast analysis Element
Permissible maximum content in the cast analysis % by mass
Permissible
% by mass
C
≤ 0,55
± 0,02
Si
≤ 0,40
+ 0,03
Mn
≤ 1,00
± 0,04
≤ 1,70
± 0,05 , 5
P
≤ 0,025
+ 0,005 ,
S
≤ 0,040
+ 0,005
Cr
≤ 2,00
± 0,05
≤ 2,20 ,20
± 0,10 0,1
≤ 0,30 ,
± 0,03 ,
≤ 0,60 ,
± 0,04
≤ 2,00
± 0,05
≤ 4,3
± 0 0,07
≤ 0,25 0,25
± 0,02
> 1,00
> 2,00 Mo > 0,30 Ni > 2,00 V
o c . a
deviation
b
EN 10083-3:2006 (E)
Table 7 ! Maximum hardness for products to be supplied in the "treated to improve shearability (+S)" " or "soft annealed (+A)" condition a
b
Steel designation
Max. HBW in condition
Name
Number
+S
+A
38Cr2
1.7003
255
207
46Cr2
1.7006
255
223
34Cr4, 34CrS4
1.7033, 1.7037
255
223
37Cr4, 37CrS4
1.7034, 1.7038
255
235
41Cr4, 41CrS4
1.7035, 1.7039
c
255
241
25CrMo4, 25CrMoS4
1.7218, 1.7213
255
212 212
34CrMo4, 34CrMoS4
1.7220, 1.7226
c
255
223
42CrMo4, 42CrMoS4
1.7225, 1.7227
255
c
241
50CrMo4 34CrNiMo6
1.7228 1.6582
d
248
d
2 248
d
248 8
-
30CrNiMo8
1.6580
-
35NiCr6
1.5815
-
d
223 3
36NiCrMo16
1.6773
-
d
269
39NiCrMo3
1.6510
-
d
240 2
30NiCrMo16-6
1.6747
-
d
270
51CrV4
1.8159 9
-
d
248
o c .
EN 10083-3:2006 (E)
Table 9 ! Surface hardness of steels after flame or induction hardening Steel designation
Surface hardness HRC min.
Name
Number
46Cr2
1.7006
54
37Cr4/37CrS4
1.7034/1.7038
51
41Cr4/41CrS4
1.7035/1.7039
53 53
42CrMo4/42CrMo4 42CrMo4/42CrM o4
1.7225/1.7227
53 53
50CrMo4
1.7228
58
a
o
The above values apply for t he condition existing after quenching ching chin g and tempering tempering temperi ng and surface surfac surfa c hardening according to the conditions given in Table 11 followed ed by by stress stress es relieving relieving at at 150°C to 180°C for about 1h, and they relate to cross-sections up to 100 mm diameter diameter et for the steels steels e 46Cr2, 37Cr4/37CrS4 and 41Cr4/41CrS4, and up to 250 mm diameter meter ffor or tthe he ssteels teels 442CrMo4/42CrMoS4 2CrMo4/4 and 50CrMo4. It should be noted that surface decarburization izat iz atio ion n may ma ay y lle lead lead ead to lo lowe lower w wer er hardness hardn har dn values in the surface hardened zones.
EN 10083-3:2006 (E)
Table 11 ! Heat treatment b
Steel designation
Quenching
c,d
e
a f
Quenching
Tempering
End quench test
Name
Number
°C
agent
°C
°C
38Cr2
1.7003
830 to 870
Oil or water
540 to 680
850 50 ± 5
46Cr2
1.7006
820 to 860
Oil or water
540 to 680
850 ± 5
34Cr4
1.7033
830 to 870
Water or oil
540 to 680
850 0 ± 5
34CrS4
1.7037
37Cr4
1.7034
825 to 865
Oil or water
540 to 680
85 ± 5 850
37CrS4
1.7038
41Cr4
1.7035
820 to 860
Oil or water
540 to 680 0
850 ± 5
41CrS4
1.7039
25CrMo4
1.7218
840 to 900
Water or oil
540 to 680
850 ± 5 8
25CrMoS4
1.7213
34CrMo4
1.7220
830 to 890
Oil or water
540 40 to 680
850 ± 5
34CrMoS4
1.7226
42CrMo4
1.7225
820 to 880
Oill or w Oi water ater at er
540 54 0 to o6 680
850 ± 5
42CrMoS4
1.7227
50CrMo4
1.7228
820 to 870
O Oil il
5540 to 680
850 ± 5
34CrNiMo6
1.6582
830 to 860
Oil or O or water
540 to 660
850 ± 5
.
EN 10083-3:2006 (E)
Key
X Y
Distance from quenched end of test piece, mm Hardness, HRC
EN 10083-3:2006 (E)
EN 10083-3:2006 (E)
Key
X Y 1
Distance from quenched end of test piece, mm Hardness, HRC HH-grade
EN 10083-3:2006 (E)
Key
X Y 1
Distance from quenched end of test piece, mm m Hardness, HRC HH-grade
EN 10083-3:2006 (E)
Key
X
Distance from quenched end of test piece, mm HRC
EN 10083-3:2006 (E)
Key
X
Distance from quenched end of test piece, e,, mm mm HRC
EN 10083-3:2006 (E)
Key
X Y
Distance from quenched end of test piece, mm Hardness, HRC
EN 10083-3:2006 (E)
Key
X Y
Distance from quenched end of test piece,, mm m mm Hardness, HRC
EN 10083-3:2006 (E)
Key
X Y 1 2
Distance from quenched end of test piece, mm Hardness, HRC HH-grade HL-grade
EN 10083-3:2006 (E)
Key
X Y 1 2
Distance from quenched end of test piece, mm Hardness, HRC HH-grade HL-grade
EN 10083-3:2006 (E)
Key
X Y 1
Distance from quenched end of test piece, mm Hardness, HRC HH-grade
EN 10083-3:2006 (E)
Key
X Y 1 2
Distance from quenched end of test piece, mm Hardness, HRC HH-grade HL-grade
EN 10083-3:2006 (E)
Key
X Y 1
Distance from quenched end of test piece, mm Hardness, HRC HH-grade
EN 10083-3:2006 (E)
Key
X Y 1 2
Distance from quenched end of test piece, mm Hardness, HRC HH-grade HL-grade
EN 10083-3:2006 (E)
Key
X Y 1 2
Distance from quenched end of test piece, mm Hardness, HRC HH-grade HL-grade
EN 10083-3:2006 (E)
Key
X Y 1
Distance from quenched end of test piece, mm Hardness, HRC HH-grade
EN 10083-3:2006 (E)
o Key
X Y
Distance from quenched end of test piece, mm Hardness, HRC
EN 10083-3:2006 (E)
Key
X Y
Distance from quenched end of test piece,, mm m mm Hardness, HRC
EN 10083-3:2006 (E)
o Key
X Y
Distance from quenched end of test piece, mm Hardness, HRC
EN 10083-3:2006 (E)
Key
X Y
Distance from quenched end of test piece,, mm m mm Hardness, HRC
EN 10083-3:2006 (E)
o
EN 10083-3:2006 (E)
Key
X Y
Distance from quenched end of test piece,, mm m mm Hardness, HRC
EN 10083-3:2006 (E)
Annex A (normative) Options
NOTE 1 One or more more of the following supplementary supplementary or special special requirements requirements may be agreed upon upon aat t the the time time o time ofof enquiry and order. The details of these requirements may be agreed upon between the manufacturer rer and andpurchaser purchaser ur at atthe the e time of enquiry and order if necessary. NOTE 2
A.1
The numbering numbering of clauses clauses is the the same same as in EN 10083-1:2006, annex B.
Mechanical properties of reference test pieces in the quenched and and tempered c condition condition
For deliveries in a condition other than quenched and tempered, the e requirements for the mechanical properties in the quenched and tempered condition shall be verified on aa reference reference nc test test piece. piece. In the case of bars and rods, the sample to be quenched and tempered pered shall, shall, unless sh unless otherwise un other ot agreed, have the cross-section of the product. In all other cases the dimensionss and and the the manufacture manufacture m ufa r of of the sample shall be agreed at the time of enquiry and order, where appropriate, while hile hi le taking taki ta king ng into into in to consideration cons co nsiide dera erra the indications for the determination of the ruling section given in EN 10083-1:2006, :2006, Annex Annex A. A. The The samples sa shall be quenched and tempered in accordance with the conditions given in Table 11 11 or as agreed ree at the time of enquiry and order. The details of the heat treatment shall be givenn in in the the inspection inspection document. docu The test pieces shall, unless otherwise agreed, be taken in accordance with h EN EN 10083-1:2006, EN 1008 100 83-1: 1:2 1:200 006 6, Figure Fig Fi 1 for bars and rods and in accordance with EN 10083-1:2006, Figure 3 for flat products. products. ro
EN 10083-3:2006 (E)
NOTE 2
A.4
For steels steels with with a specified minimum sulphur content content the agreements should only concern the the oxides. oxides. .
Non-destructive testing
Steel flat products of thickness equal to or greater than 6 mm shall be tested ultrasonically in accordance accordance a with wiith with t EN 10160 and steel bars shall be tested ultrasonically in accordance with EN 10308. Otherr products products c s shall shall be be non-destructively tested in accordance with a method to be agreed at the time of enquiry uiry and and order order de and and to to acceptance criteria also to be agreed at the time of enquiry and order. A.5
Product analysis
.
One product analysis shall be carried out per cast for elements for which values alue al ues s are are specified are spec sp ecif ecifie ied d for forr the fo t cast analysis of the steel type concerned. The conditions for sampling shall be in accordance with EN ISO 14284. 284 84.. In In the In the the e case cas ca se of of dispute of disp di about the in accordance accordance with with aa reference re analytical method, the chemical composition shall be determined in method taken from one of the European Standards in CR 10261. A.6
Special agreements for marking
The products shall be specially marked (e.g. by bar codingg in in accordance accordance rda rd anc with with th EN EN 606) in a way agreed upon at the time of enquiry and order.
EN 10083-3:2006 (E)
Annex C (informative) Reference values for the maximum diameter at a certain core hardness of steels with boron
Table C.1 contains reference data for the maximum diameter at certain core hardness dness after after er hardening hardening in in i oil or water. Table C.1 ! Reference values for the maximum diameter at a cer c certain erta tain aiin co core re ha hard hardness rrdne ne of steels with boron Steel name
a
Hardening temperature
Core hardness
Approximate maxim maximum um diameter mm
°C
HRC
W Water
Oil
20MnB5
900
34
32
25
30MnB5
880
40
38
30
38MnB5
850
45
40
32
27MnCrB5-2
900
38
52
43
33MnCrB5-2
880
42
55
45
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B i b l i o g r a p h y
