Hi
Your grouping is ok. Further Refer ASME IX - QW440/QW442 for weld metal deposite i e A No. This will help you to ASME specification i e SFA Number selection refer QW432 ( Example if material is carbon steel Refer chapter SFA5.1 Table 7 in ASME II part C matching chemical composition of feller metal)
Regards
Rakesh Kasera
From: ajmlouis <ajmlouis@gmail.com>
To: materials-welding@googlegroups.com
Sent: Tuesday, 25 June 2013 6:52 AM
Subject: Re: [MW:18036] Reg: ASME P Numbers Clarification
To: materials-welding@googlegroups.com
Sent: Tuesday, 25 June 2013 6:52 AM
Subject: Re: [MW:18036] Reg: ASME P Numbers Clarification
ASME P-Numbers
To reduce the number of welding and brazing procedure qualifications required base metals have been assigned P-Numbers by the ASME BPVC. Ferrous metals which have specified impact test requirements have been assigned Group Numbers within P-Numbers.
These assignments have been based on comparable base metal characteristics, such as:
- Composition
- Weldability
- Brazeabilit
- Mechanical Properties
Indiscriminant substitution of materials in a set of P-Numbers or Group Numbers may lead to problems or potentially failures. Engineering assessment is necessary prior to a change in materials.
When a base metal with a UNS number Designation is assigned a P-Number, then a base metal listed in a different ASME material specification with the same UNS number shall be considered that P-Number.
The table below is a guide and is for instructive purposes only. Anyone specifying materials or requirements should refer directly to the ASME Boiler and Pressure Vessel Code to specify materials, P-Numbers, procedures, or other requirements and not rely on the table below. The table below is only a rather incomplete and approximate summary of ASME data.
| P-Numbers | Base Metal (Typical or Example) |
| 1 | Carbon Manganese Steels (four Group Numbers) |
| 2 | Not Used |
| 3 | Half Molybdenum or half Chromium, half Molybdenum (three Group Numbers) |
| 4 | One and a quarter Chromium, half Molybdenum (two Group Numbers) |
| 5A | Two and a quarter Chromium, one Molybdenum |
| 5B | Five Chromium, half Molybdenum or nine Chromium, one Molybdenum (two Group Numbers) |
| 5C | Chromium, Molybdenum, Vanadium (five Group Numbers) |
| 6 | Martensitic Stainless Steels (Grade 410, 415, 429) (six Group Numbers) |
| 7 | Ferritic Stainless Steels (Grade 409, 430) |
| 8 | Austenitic Stainless Steels
|
| 9A, B, C | Two to four Nickel Steels |
| 10A, B, C, F | Various low alloy steels |
| 10H | Duplex and Super Duplex Stainless Steel (Grades 31803, 32750) |
| 10I | High Chromium Stainless Steel |
| 10J | High Chromium, Molybdenum Stainless Steel |
| 10K | High Chromium, Molybdenum, Nickel Stainless Steel |
| 11A | Various high strength low alloy steels (six Group Numbers) |
| 11B | Various high strength low alloy steels (ten Group Numbers) |
| 12 to 20 | Not Used |
| 21 | High Aluminum content (1000 and 3000 series) |
| 22 | Aluminum (5000 series - 5052, 5454) |
| 23 | Aluminum (6000 series – 6061, 6063) |
| 24 | Not Used |
| 25 | Aluminum (5000 series - 5083, 5086, 5456) |
| 26 to 30 | Not used |
| 31 | High Copper content |
| 32 | Brass |
| 33 | Copper Silicone |
| 34 | Copper Nickel |
| 35 | Copper Aluminum |
| 36 to 40 | Not Used |
| 41 | High Nickel content |
| 42 | Nickel, Copper - (Monel 500) |
| 43 | Nickel, Chromium, Iron - (Inconel) |
| 44 | Nickel, Molybdenum – (Hastelloy B2, C22, C276, X) |
| 45 | Nickel, Chromium |
| 46 | Nickel, Chromium, Silicone |
| 47 | Nickel, Chromium, Tungsten |
| 47 to 50 | Not Used |
| 51, 52, 53 | Titanium Alloys |
| 61, 62 | Zirconium Alloys |
On Jun 24, 2013, at 10:12 AM, PRABU k <prabuk.engg@gmail.com> wrote:
Dear Sir,Good Day !Kindly Guide me whether the below mentioned ASME P NO's corresponds to respective Steel Types, Corrections in error if any is most thankful.This will help me in selecting Proper SFA as Per ASME section II Part C.
Steel Type P NUMBER Carbon Steel 1 Low-Alloy Steel 3,4,5A,5B,5C,6,7,8,9A,9B,9C,11A,11B,10A,10B,10C,10F Stainless Steel 6,7,8,10H,10I,10J,10K ![]()
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