ASTM A105 vs ASME SA105 AND OTHER MATERIALS

[bblln45]

Can somebody please give me the para where it says we can substitute, A105 for SA 105, in ASME 8, B31.1 and B31.3 sections ?? and 123.1.2 and any other relevant sections to confirm we satisfy the code with the material substitution.
Many thanks

 

[mk3223]

I don't know where it says the material can be substituted. My understanding is that the material for the B31.3 is A105, and for B31.1 and Section VIII is SA105.

 

[Arkaprava Ghosh]

All the three codes, refer to ASME section II PArt C , wherein it is specified that substitute of ASTM materials can be done.
Refer Mandatory Appendix-II of ASME sec II PArt A.

 

[XL83NL]

MK3223 has it correct. For B31.3 you need ASTM A (or B, obviously). For power piping and section div 1 work, you need ASME SA (or SB for non-ferrous alloys, if you like). I think you can 'upgrade' an ASTM A material to ASME SA according the rules contained within Sec VIII-1 and/or II-D, but I would have to look up that reference.

All the three codes, refer to ASME section II PArt C , wherein it is specified that substitute of ASTM materials can be done.
Refer Mandatory Appendix-II of ASME sec II PArt A.

Not sure whats meant with this phrase but it doesnt seem correct to me. Sec II-C is a spec for welding rods, electrodes and filler metals.

 

[metengr]

This is what dual certification can be used for with materials. It is important to note that the material specification designation of SA from ASME B&PV Codes and Standards means the ASME B&PV committee has reviewed and approved the ASTM material specification for use. In many cases, the ASTM and ASME SA material specifications can be identical and in other cases there could be exceptions.

 

[pradipgoswami]

Both of the above materials are identical, in fact the note on the heading of SA 105(Sec II, Pt A) tells the facts. However for ASME design using materials with ASME classification(SA) are better with respect any design approval, or regulators' approval related issues. Sec-IX is open to both the specifications by assigning P No.

Pradip Goswami,P.Eng.IWE
Welding & Metallurgical Specialist
ca.linkedin.com/pub/pradip-goswami/5/985/299

 

[EdStainless]

In most cases there are small but important differences in the "A" and "SA" specifications.
The "SA" will often require a test that is optional in "A" or require reporting of something not required by ASTM.
Read the fine print of your applicable code.
Most mills that do any ASME work will dual certify everything to ASTM/ASME. It is easier to follow one set of rules.

= = = = = = = = = = = = = = = = = = = =
P.E. Metallurgy, Plymouth Tube

 

[Don56]

While it is always preferred and easier to use ASME SA materials, ASTM A materials may be used if they comply with ASME Section II Mandatory appendix II. The year of the ASTM specification should be on the MTR. For Section VIII work the material could be certified by the manufacturer per Section VIII UG-10.