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RE: [MW:9456] ASTM A36 plates

By Materials & Welding

Dear Krishnasamy,

 

Thanks for the information but is there any restriction in code B31.3 or BPV

 

REGARDS,
SYED MOIN

 

From: materials-welding@googlegroups.com [mailto:materials-welding@googlegroups.com] On Behalf Of KRISHNASAMY MASANAM
Sent: Tuesday, January 25, 2011 2:50 PM
To: materials-welding@googlegroups.com
Subject: RE: [MW:9447] ASTM A36 plates

 

Dear Moin!
                      A36is carbon steel for general structural purposes and also A234 is wroyght carbon steel with Chromium (for forming stable matel carbides at the grain boundaries and the strong increase in corrosion resistances). Molybdenum (used in steels alloys for its high corrosion resistace and weldablity), Nickel (for instance, the austenite structure of iron is stabilized. This crystal structure makes such steels  less brittle at low temperatures) etc., these items are missing in A36. So your client statement is correct...        

Thanks & Best regards

 

Krishnasamy. M

Welding Inspector

Fize Al- Shammary Gen. Cont. Est.

Kingdom of Saudi Arabia.

Mob: +966 592823768




 

Date: Tue, 25 Jan 2011 02:14:55 +0000
To: materials-welding@googlegroups.com
Subject: Re: [MW:9443] ASTM A36 plates
From: manpreetsin88@rediffmail.com

Dear Moin,

Yes, your client is correct, A36  is a commonly known as structural plate with poor grain structure and should not be used for pressure vessels,

Why not try SA516, there is not much cost difference.


Regards
Manpreet Singh





On Mon, 24 Jan 2011 19:11:41 +0530 "Moin - QC" wrote
>

Dear members,

Can a plate to ASTM A36 can be used to manufacture TEEs to A234 WPB, is there any restriction in BPV or B31.3 on the use of A36 plate for manufacturing A234 Tees.

One of client says A36 is for general purpose and cannot be used for making a pressure containing component to be used in oil and gas production . Is it correct, if yes why? And if not can you please provide me a technical justification, I could not find anything B31.3.

Thanks & Regards
>Syed Moin
>


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