API510- P NumbersMy Self Study Notes

Fion Zhang/ Charlie Chong

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.

http://www.twi.co.uk/technical-knowledge/faqs/material-faqs/faq-can-asme-ix-p-numbers-be-applied-to-non-asme-material/

Issues on non ASME material:

P-Numbers- Fion Zhang/ Charlie Chong

P-NUMBERSASME 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-Numbers- Fion Zhang/ Charlie Chong

P No. 117 P No. 61 and P No. 62 Zirconium and zirconium-based alloys

P No. 115 P No. 51 through P No. 53 Titanium and titanium-based alloys

P No. 110 through P No. 112

P No. 41 through P No. 47 Nickel and nickel-based alloys

P No. 107 and P No. 108

P No. 31 through P No. 35 Copper and copper-based alloys

P No. 104 and P No. 105

P No. 21 through P No. 25 Aluminum and aluminum-based alloys

P No. 101 through P No. 103

P No.1 through P No. 11, including P No. 5A, 5B, and 5C

Steel and steel alloys

BrazingWeldingBase Material

P Number Summary:

P-Numbers- Fion Zhang/ Charlie Chong

Group number?

Q5. ASME IX section QW-200.3What 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

P-Numbers- Fion Zhang/ Charlie Chong

5 Sub Groups:- Chrome Molybdenum vanadium65C

2 Sub Groups:- Typically 5 Cr ½ Mo and 9 Cr 1 Mo.55B

Typically 2¼ Cr 1Mo55A

2 Sub Groups:- Typically 1¼ Cr ½ Mo54

3 Sub Groups:- Typically ½ Mo and ½ Cr ½ Mo 43

Not Used-2

Carbon Manganese Steels, 4 Sub Groups Group 1 up to approx 65 ksi Group 2 Approx 70ksi Group 3 Approx 80ksi Group 4 ?

11

Base MetalEN288ASME P No.

Steel and Steel Alloy: C-Mn / Cr-Mo Steel

P-Numbers- Fion Zhang/ Charlie Chong

Base MetalEN288ASME P No.

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

98

Ferritic Stainless Steels Typically Grade 40987

6 Sub Groups:- Martensitic Stainless Steels Typically Grade 41086

Steel and Steel Alloy: Stainless Steel

P-Numbers- Fion Zhang/ Charlie Chong

10 Sub Groups:-Mixed bag of high strength low alloy steels.?11B

Base MetalEN288ASME P No.

Not Used-12 to 20

Mixed bag of high strength low alloy steels.?11 A Groups 2 to 59 Nickel Steels711A Group 1

Typically 26 Chrome one Molybdenum?10J

Duplex and Super Duplex Grades 31803, 327501010 H

Mixed bag of low alloy steels, 10G 36 Nickel Steel?10A,B,C,F,G

Typically two to four percent Nickel Steels79A, B, C

Steel and Steel Alloy: Ferrous Based-Duplex/Ni/Cr-Mo/HSLA

P-Numbers- Fion Zhang/ Charlie Chong

Base MetalEN288ASME P No.

Not used26 to 30

Aluminum Magnesium Manganese Typically 5083, 508622b25

Not Used-24

Aluminum Magnesium Silicone Grade 60002323

Aluminum Magnesium Grade 500022a22

Pure Aluminum2121

P-Numbers- Fion Zhang/ Charlie Chong

Base MetalEN288ASME P No.

Not Used36 to 40

Copper Aluminum35

Copper Nickel34Copper Silicone33Brass32Pure Copper31

P-Numbers- Fion Zhang/ Charlie Chong

Nickel Copper:- Monel 50042

Pure Nickel41

Base MetalEN288ASME P No.

Not Used47 to 50

Nickel Chrome Tungsten47

Nickel Chrome Silicone46

Nickel Chrome :- Incoloy 800, 82545

Nickel Molybdenum:- Hastelloy C22, C27644

Nickel Chrome Ferrite:- Inconel43

http://engstandards.lanl.gov/ESM_Chapters.shtmlhttp://www.rcramer.com/shop/asme_pnumbers.shtmlhttp://www.gowelding.com/wp/pnumbers.htmhttp://www.gowelding.com/wp/pnumbers.htmhttp://engstandards.lanl.gov/ESM_Chapters.shtml

P-Numbers- Fion Zhang/ Charlie Chong

Base MetalEN288ASME P No.

Zirconium Alloys61, 62

Titanium Alloys51, 52, 53

P-Numbers- Fion Zhang/ Charlie Chong

P-Numbers- Fion Zhang/ Charlie Chong

P-Numbers- Fion Zhang/ Charlie Chong