ASTM A 270 TP304
ASTM A 270 TP304
(OP)
Hi i wonder if anybody can help me with a code problem. I am busy qualifying a new welding procedure in accordance with ASME IX the test coupon material is ASTM A 270 TP304 i am struggling with this materials P number as ASME II part A(2015) nor ASME IX(2015) list this material.
So my question is, is this material then classified as a unlisted material or does it have a P number as this will this obviously limited me substantially if it is an unlisted material
It's quite confusing as a thought all ASTM materials have a P-number
So my question is, is this material then classified as a unlisted material or does it have a P number as this will this obviously limited me substantially if it is an unlisted material
It's quite confusing as a thought all ASTM materials have a P-number





RE: ASTM A 270 TP304
RE: ASTM A 270 TP304
Is this piping being done to the BPE? It can't be done to B&PVC, the sanitary specs don't require tensile testing.
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P.E. Metallurgy, Plymouth Tube
RE: ASTM A 270 TP304
RE: ASTM A 270 TP304
But in ASME IX QW-420 is clear stated:
"......
If an unlisted base metal has the same UNS number designation as a base metal listed in Table QW/QB-422, that base metal is also assigned that P-Number or P-Number plus Group Number.
If the unlisted base metal is used for procedure qualification, the minimum tensile value of the listed base metal shall apply for the tension test specimens.
..."
Therefore ASTM A 270 TP304 is assigned to P-No. 8. and can be used for qualifying all P-No. 8 Materials provided that during the tensile test 75 ksi was reached.
Regards - Juergen
RE: ASTM A 270 TP304
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P.E. Metallurgy, Plymouth Tube