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ASTM A672 Gr C70 Cl 22

ASTM A672 Gr C70 Cl 22

ASTM A672 Gr C70 Cl 22

(OP)
Hi,

Can somebody please tell me the chemical composition for ASTM A672 Gr C70 Cl 22?  I cannot find it in any of the specs.  Is it similar to ASTM A106 Gr C?

Thanks a lot for your help.

Mad Dog

RE: ASTM A672 Gr C70 Cl 22

No. The ASME SA 672 Specification is for "Electric-Fusion- Welded Steel Pipe for High Pressure Service at Moderate Temperatures".

The Grade C70 refers to ASTM A 516 Grade 70 plate for fabricating the welded steel pipe. This is plain carbon steel plate, killed, fine grained.

The Class 22 refers to stress relieved pipe after welding.

RE: ASTM A672 Gr C70 Cl 22

If you don't have a copy of the A 516 Grade 70 plate specification;

.28 % C max for plate (1/2" to 2" in thickness)
.85-1.20% Mn
0.035% Max P
0.035% Max S
0.15-0.40% Si

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