Asme p number chart
To ease welding procedure creation and welding procedure management, the ASME Weld Number tables provide a well-defined numbering system methodology. These numbers are assigned to the Weld base metals and filler metals.
Refer to Fig. 1, which clarifies what these numbers relate to.Fig. 1: P-Number, F-Number, and A-Number in WeldingDepending on the material characteristics like composition, weldability, brazeability, design consideration, heat treatment, and mechanical properties, ASME BPVC assigned P-Numbers to the base metals. The code assigned the same
P-number for the materials with similar material characteristics. These are listed in Table QW/QB-422 of ASME. While changing the base metal from a qualified WPS to a new base metal, requalification or a new PQR is not required if the new base metal falls in the same P-Number.These base metals are grouped by material and the assigned PNumbers are constant for that specific material group. For example, the base metals of Low Carbon Steel or Carbon Manganese material fall in P-Number 1. The following table (Table-1) provides the P-number ranges for various metals and alloys.Sr. No.Type of Steel, Metal, AlloyP-Number1.Carbon Steel (C-Mn )12.Low Alloy Steel (Cr-Mo Steels)4,
5A, 5B, 5C, 15E3.Stainless Steels (Cr-Ni steels)8, 10H4.Nickel & Ni-base alloys41 to 495.Aluminum & Aluminum alloys21 to 266.Copper & copper alloys31 to 357.Titanium & titanium alloys51 to 538.Zirconium & zirconium alloys61 and 62Table 1: ASME P-Number TableFrom the ASME Sec IX table, QW/QB-422 can find the P-number of a specific
grade of material, i.e. which material falls under which P-number and what is product form i.e. plate, forging, sheets, fittings, etc.P-number is generally mentioned in WPS & PQR for procedure qualification and in WPQ for performance qualification.As the name suggests, F stands for Filler number. Depending on the composition, the microstructure of
the material F-number is assigned to welding consumables i.e. filler wires, and electrodes to reduce the procedure and performance qualifications. F-number is generally mentioned in WPS & PQR for procedure qualification and in WPQ for performance qualification. The ASME Sec IX (QW-432 assigned the F-number on the basis of type of
consumable, usability of consumable, metallurgical compatibility, heat treatment, and other mechanical properties. The same F no is assigned to carbon steel as well as stainless steel filler wires. For example. ER70S-6 & ER308 have the same F no. i.e. F no. 6. The following table (Table-2) provides the F-number ranges for various consumables as
classified in ASME Section.Sr. No.Type of Steel consumablesF-Number1.Carbon Steel1 to 62.Low Alloy Steel (Cr-Mo Steels)1 to 63.Stainless Steels (Cr-Ni steels)5, 64.Nickel & Ni-base alloys41 to 465.Aluminum & Aluminium alloys21 to 266.Copper & copper alloys31 to 377.Titanium & titanium alloys51 to 568.Zirconium & zirconium alloys619.Hardfacing weld metal overlays71 and 72Table 2: ASME F-Number ChartFrom the ASME Sec IX, table QW-432 can find the F-number of specific consumables classified as per ASME Sec IIC.
Refer to Fig. 1, which clarifies what these numbers relate to.Fig.
1: P-Number, F-Number, and A-Number in WeldingDepending on the material characteristics like composition, weldability, brazeability, design consideration, heat treatment, and mechanical properties, ASME BPVC assigned P-Numbers to the base metals. The code assigned the same P-number for the materials with similar material characteristics.
These are listed in Table QW/QB-422 of ASME. While changing the base metal from a qualified WPS to a new base metal, requalification or a new PQR is not required if the new base metal falls in the same P-Number.These base metals are grouped by material and the assigned P-Numbers are constant for that specific material group. For example, the
base metals of Low Carbon Steel or Carbon Manganese material fall in P-Number 1. The following table (Table-1) provides the P-number ranges for various metals and alloys.Sr. No.Type of Steel, Metal, AlloyP-Number1.Carbon Steel (C-Mn )12.Low Alloy Steel (Cr-Mo Steels)4, 5A, 5B, 5C, 15E3.Stainless Steels (Cr-Ni steels)8, 10H4.Nickel & Ni-base
alloys41 to 495.Aluminum & Aluminum alloys21 to 266.Copper & copper alloys31 to 357.Titanium & titanium alloys51 to 538.Zirconium & zirconium alloys61 and 62Table 1: ASME P-Number TableFrom the ASME Sec IX table, QW/QB-422 can find the P-number of a specific grade of material, i.e. which material falls under which P-number and what is
product form i.e. plate, forging, sheets, fittings, etc.P-number is generally mentioned in WPS & PQR for procedure qualification and in WPQ for performance qualification.As the name suggests, F stands for Filler number. Depending on the composition, the microstructure of the material F-number is assigned to welding consumables i.e. filler wires,
and electrodes to reduce the procedure and performance qualifications.
1: P-Number, F-Number, and A-Number in WeldingDepending on the material characteristics like composition, weldability, brazeability, design consideration, heat treatment, and mechanical properties, ASME BPVC assigned P-Numbers to the base metals. The code assigned the same P-number for the materials with similar material characteristics.
Earlier there were ASME S Numbers that were removed by the code from the year 2009. Similarly, the filler metal grouping scheme consists of the F-Numbers and A-Numbers.
These are listed in Table QW/QB-422 of ASME. While changing the base metal from a qualified WPS to a new base metal, requalification or a new PQR is not required if the new base metal falls in the same P-Number.These base metals are grouped by material and the assigned P-Numbers are constant for that specific material group. For example, the
base metals of Low Carbon Steel or Carbon Manganese material fall in P-Number 1. The following table (Table-1) provides the P-number ranges for various metals and alloys.Sr. No.Type of Steel, Metal, AlloyP-Number1.Carbon Steel (C-Mn )12.Low Alloy Steel (Cr-Mo Steels)4, 5A, 5B, 5C, 15E3.Stainless Steels (Cr-Ni steels)8, 10H4.Nickel & Ni-base
alloys41 to 495.Aluminum & Aluminum alloys21 to 266.Copper & copper alloys31 to 357.Titanium & titanium alloys51 to 538.Zirconium & zirconium alloys61 and 62Table 1: ASME P-Number TableFrom the ASME Sec IX table, QW/QB-422 can find the P-number of a specific grade of material, i.e. which material falls under which P-number and what is
product form i.e. plate, forging, sheets, fittings, etc.P-number is generally mentioned in WPS & PQR for procedure qualification and in WPQ for performance qualification.As the name suggests, F stands for Filler number. Depending on the composition, the microstructure of the material F-number is assigned to welding consumables i.e. filler wires,
and electrodes to reduce the procedure and performance qualifications. F-number is generally mentioned in WPS & PQR for procedure qualification and in WPQ for performance qualification. The ASME Sec IX (QW-432 assigned the F-number on the basis of type of consumable, usability of consumable, metallurgical compatibility, heat treatment, and
other mechanical properties. The same F no is assigned to carbon steel as well as stainless steel filler wires. For example. ER70S-6 & ER308 have the same F no. i.e. F no. 6.
The following table (Table-2) provides the F-number ranges for various consumables as classified in ASME Section.Sr. No.Type of Steel consumablesF-Number1.Carbon Steel1 to 62.Low Alloy Steel (Cr-Mo Steels)1 to 63.Stainless Steels (Cr-Ni steels)5, 64.Nickel & Ni-base alloys41 to 465.Aluminum & Aluminium alloys21 to 266.Copper & copper
alloys31 to 377.Titanium & titanium alloys51 to 568.Zirconium & zirconium alloys619.Hard-facing weld metal overlays71 and 72Table 2: ASME F-Number ChartFrom the ASME Sec IX, table QW-432 can find the F-number of specific consumables classified as per ASME Sec IIC. With the F-number there is a reduction of procedure and performance
qualification as the same F-number of material does not require requalification.From the ASME Sec IX, table QW-433 can be referred to for the welder performance qualification range. A snapshot is given below:As from the name, A stands for analysis. A-number is designated by ASME to weld metal deposition composition analysis to reduce the
number of procedure qualifications in Welding. From the ASME Sec IX table QW-442 can be referred to for different A number is given to different groups of metals/alloys. A-number is generally mentioned in WPS & PQR. It is not essential for performance qualification i.e. not mentioned in WPQ.Note that the A-Number gives the chemical
composition of the weld metal in the “as-welded” state, not of the filler metal product in its raw form.Click here to learn Welding Technology in detail.To learn more about welding the following video courses you can refer to:link to What is Green Energy?
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Methods for Saltwater Disposal (PDF) P Number (P mean Parent Metal) in ASME Section IX means the material types classification based on their chemical & mechanical characteristics. P Number is provided for users to minimize the numbers of WPS, PQR, and WQT qualifications. In ASME Section IX, Table QW/QB-422 materials are classified
as:Ferrous MetalsNon-Ferrous MetalsFor Ferrous metals only, ASME Section IX provided Group Numbers in Table QW/QB-422. Material having Group Numbers means that they have toughness requirements.The base metals are assigned specific P-Number based on their chemical and mechanical properties. E.g., P-Number 1 is for C-Mn (Carbon
Manganese) or Low Carbon Steel materials.P-Number is an Essential variable for Welding Procedure Qualification according to ASME Section IX.Assignments of P-Numbers have been based on similar base metal mechanical & chemical properties, for example:Chemical Composition- C-Mn, C-Mo, Cr-Mo, etc.Ease of Welding: Ferritic, Martensitic &
austenitic types.Ease of Brazing- Applicable for Non-ferrous materials.Mechanical Properties– Tensile & toughness.One P-Number covers various grades of material specification having similar metallurgy and mechanical properties.So, a procedure qualification made according to one of these materials under the same P-Number covers other
materials having the same P-Number.Hence, no separate procedure qualification (WPS) is required for this change as permitted in the ASME Section IX.P-Number Table & P-Number ListThe most important P-Number for different material groups are listed in the below table/ List for reference. The table provides an easy reference for various types of
materials P-Number used for procedure and performance qualification.Click here to download ASME P-Number Table.pdfWhy P-Number in Welding is required & what is P-Number importance?The P-Numbers help to reduce the range of WPS qualification requirements. For example, a WPS qualified with SA516 material which falls under P1 material
can be used to weld any other material falling within the same P-Number.Below is a summary of material types based on P-Number according to ASME Section IX for welder qualification and procedure qualification.Do all materials have a P-Number?No, not all materials have a P-Number.
The American Society of Mechanical Engineers (ASME) Section 9 outlines the materials that need a P-Number.Materials that need a P-Number are those that are in contact with pressurized piping & pressure vessel systems. The ASME Section 9 outlines the specific requirements for each material and assigns each a P-Number.P numbers are
specified in ASME Section IX and as we know ASME only covers materials that are used for the construction of boilers, pressure vessels, piping, nuclear, and related ASME code constructions.So, not all of the materials will have the P-Numbers. What is S- Number in Welding?S-Number was similar to P-Number and used in the ASME in past but they
were removed in 2009. So, S-Numbers are no more in practical use in welding engineering and are no more relevant.In ASME Section 9, 2009 edition, S-Numbers were merged with P-Number.
Refer to the below code explanation.What are the P1 Materials?The P1 designation is assigned by the American Society of Mechanical Engineers (ASME) to materials that meet certain criteria for chemical and mechanical properties. These materials are specified in ASME section IX, which is the standard for welding qualification.P1 materials are
simple carbon steel materials. If I say precisely they are C-Mn steel as the main alloying elements are carbon and manganese. Example of P1 materials are ASTM A105, ASTM A106, ASTM A36, ASTM A516.An ASME P1 material list is a list of materials that are approved for use in construction and pressure vessel applications.
The list is maintained by the American Society of Mechanical Engineers (ASME) and can be found in ASME Section IX- Table QW/QB-422 for Ferrous & Non-Ferrous Material P-Numbers.Below is ASME P1 Material List for reference:A/SA–36A/SA–53A/SA–105A/SA–106A108A/SA–134A/SA–135A139A/SA–178A/SA–178-9A/SA–181A/SA–216A/SA–
266A/SA–283A/SA–333A381A/SA–414A/SA–513A/SA–516A/SA–519An ASME P1 Group 1 material list is a list of materials that are approved for use in construction and pressure vessel applications. The list is maintained by the American Society of Mechanical Engineers (ASME) and can be found in ASME Section IX- Table QW/QB-422 for Ferrous &
Non-Ferrous Material P-Numbers.P-No. 8 Materials Group List is a list of austenitic stainless steel materials that are suitable for use in pressure vessels constructions.Below is the P No. 8 Material group list:A/SA–182A/SA–213A/SA–240A/SA–249A/SA–312A/SA–351A/SA–358A/SA–376A/SA–409A/SA–451A/SA–479You can find the complete list of PNumber 8 materials in ASME Section IX, QW-422 Table.P numbers are assigned to duplex stainless steels based on their chemical composition. The P number also corresponds to the maximum service temperature for the particular steel.The most commonly used duplex stainless steel P-Number are:S32550 : P- Number 10H, Group No. 1S32750 : PNumber 10H, Group No. 1S32760 : P- Number 10H, Group No. 1S32615 : P- Number 8, Group No. 1S32906 : P- Number 10H, Group No. 1S32950 : P- Number 10H, Group No. 1