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API 5L Pipe steel plate

ask:

Does API 5L Gr. B and A 53 Gr b any difference?
I was seen that mechanical and chemical properties between both of pipe are equal
Yield strength=60000PSI; %C=0.3
My question is, May i use A 53 for kerosene pipeline?

answer:

API 5L Grade A 48KSI min UTS 30KSI min yeild .22% Carbon, .9% Mn.
API 5L Grade B 60KSI min UTS 35KSI min yeild .27% Carbon, 1.15% Mn
The chemistry and mech. properties are NOT equal. Grade B can be used in place of Grade A except where there might be an issue of H2S embrittlement.
API had a reason for making two different standards.

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