API5 AP I510 10-- P Nu Numb mber erss My Self Study Notes
ASME P Material Numbers
This is a general guide ASME P numbers and their equivalent EN288 groupings. Groups referred to in the Base Metal column are ASME sub groups. EN288 material groups are included for comparison only.
Issues on non ASME material: http://www.twi.co.uk/technical-knowledge/faqs/material-faqs/faqcan-asme-ix-p-numbers-be-applied-to-non-asme-material/
P-NUMBERS ASME Section IX has assigned P-Numbers for base materials used under the ASME Code to reduce the number of required welding and brazing procedure qualifications (see ASME Section IX Table QW/QB-422 and Appendix D). For ferrous base materials that have specified impact test requirements, Group Numbers have also been assigned within P-Numbers. These assignments are based on comparable base material characteristics, such as composition, weldability, brazeability, and mechanical properties. These assignments do not mean that base materials may be substituted for a base material that was used in the qualification test without consideration of compatibility from a standpoint of metallurgical properties, post weld heat treatment, design, mechanical properties, and service requirements. Where notch toughness is a factor, it is considered that the base materials meet the specific requirements. The structure of P-Number assignments is based on the following:
http://engstandards.lanl.gov/esm/welding/vol1/GWS%201-07-Att.2-R1.pdf
P Number Summary: Base Material
Welding
Brazing
Steel and steel alloys
P No.1 through P No. 11, including P No. 5A, 5B, and 5C
P No. 101 through P No. 103
Aluminum and aluminum based alloys
P No. 21 through P No. 25
P No. 104 and P No. 105
Copper and copper-based alloys
P No. 31 through P No. 35
P No. 107 and P No. 108
Nickel and nickel-based alloys
P No. 41 through P No. 47
P No. 110 through P No. 112
Titanium and titanium based alloys
P No. 51 through P No. 53
P No. 115
Zirconium and zirconium based alloys
P No. 61 and P No. 62
P No. 117
Group number? Q5. ASME IX section QW-200.3 What does the assignment of a group number to a P-number indicate? (a) The base material is non-ferrous (b) Post-weld heat treatment will be required (c) The base material is a steel or steel alloy (d) Notch toughness requirements are mandatory
Steel and Steel Alloy: C-Mn / Cr-Mo Steel
ASME P No.
EN288
Base Metal
1
Carbon Manganese Steels, 4 Sub Groups Group 1 up to approx 65 ksi Group 2 Approx 70ksi Group 3 Approx 80ksi Group 4 ?
1
2
-
Not Used
3
4
3 Sub Groups:- Typically ½ Mo and ½ Cr ½ Mo
4
5
2 Sub Groups:- Typically 1¼ Cr ½ Mo
5A
5
Typically 2¼ Cr 1Mo
5B
5
2 Sub Groups:- Typically 5 Cr ½ Mo and 9 Cr 1 Mo.
5C
6
5 Sub Groups:- Chrome Molybdenum vanadium
Steel and Steel Alloy: Stainless Steel
ASME P No.
EN288
Base Metal
6
8
6 Sub Groups:- Martensitic Stainless Steels Typically Grade 410
7
8
Ferritic Stainless Steels Typically Grade 409
9
Austenitic Stainless Steels, 4 Sub groups Group1 Typically Grades 304, 316, 347 Group 2 Typically Grades 309, 310 Group 3 High manganese grades Group 4 Typically 254 SMO type steels
8
Steel and Steel Alloy: Ferrous Based-Duplex/Ni/Cr-Mo/HSLA
ASME P No.
EN288
Base Metal
9A, B, C
7
Typically two to four percent Nickel Steels
10A,B,C,F,G
?
Mixed bag of low alloy steels, 10G 36 Nickel Steel
10 H
10
Duplex and Super Duplex Grades 31803, 32750
10J
?
Typically 26 Chrome one Molybdenum
11A Group 1
7
9 Nickel Steels
11 A Groups 2 to 5 ?
Mixed bag of high strength low alloy steels.
11B
?
10 Sub Groups:-Mixed bag of high strength low alloy steels.
12 to 20
-
Not Used
ASME P No.
EN288
Base Metal
21
21
Pure Aluminum
22
22a
Aluminum Magnesium Grade 5000
23
23
Aluminum Magnesium Silicone Grade 6000
24
-
Not Used
25
22b
Aluminum Magnesium Manganese Typically 5083, 5086
26 to 30
Not used
ASME P No.
EN288
Base Metal
31
Pure Copper
32
Brass
33
Copper Silicone
34
Copper Nickel
35
Copper Aluminum
36 to 40
Not Used
ASME P No.
EN288
Base Metal
41
Pure Nickel
42
Nickel Copper:- Monel 500
43
Nickel Chrome Ferrite:- Inconel
44
Nickel Molybdenum:- Hastelloy C22, C276
45
Nickel Chrome :- Incoloy 800, 825
46
Nickel Chrome Silicone
47
Nickel Chrome Tungsten
47 to 50
Not Used
http://engstandards.lanl.gov/ESM_Chapters.shtml http://www.rcramer.com/shop/asme_pnumbers.shtml http://www.gowelding.com/wp/pnumbers.htm http://www.gowelding.com/wp/pnumbers.htm http://engstandards.lanl.gov/ESM_Chapters.shtml
ASME P No.
EN288
Base Metal
51, 52, 53
Titanium Alloys
61, 62
Zirconium Alloys
