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SA 334 Gr.6 design temperature

SA 334 Gr.6 design temperature

SA 334 Gr.6 design temperature

Dear sirs,
We would like to use stock tubes SA334 Gr.6 in a HE with design low temperature -46°C but in the certificate there isn't the value of impact test.
Is it mandatory to write in the certificate the values of impact test? Shall we use these tubes without any problem?

Another question, how can we know the minimum design temperature with tubes marked SA210 GrA1 (without any value of impact test)?
(OD:19,05mm thk:2,11mm)

Thank you
(sorry for my bad english)

RE: SA 334 Gr.6 design temperature

The thickness is not subject to charpy impact testing

RE: SA 334 Gr.6 design temperature

Ok that's true, but I would like to know the minimum design temperature for SA334Gr6 and SA210.

RE: SA 334 Gr.6 design temperature

The minimum service temperature w/o impact testing is -20 deg F.

RE: SA 334 Gr.6 design temperature

metengr, did you refer to SA334Gr6 or SA210?
Where can I found this value in ASME in order to explain that to my inspector?

RE: SA 334 Gr.6 design temperature

The -20 deg F is for SA 210, from ASME Section II, part D, Table I. For SA 334 Grade 6, IF impact testing is required, the minimum impact testing temperature is -50 deg F. I would use -50 deg F as the minimum for these tubes (based on requirements in SA 334 for Grade 6 material).

RE: SA 334 Gr.6 design temperature

See UCS-66(d) for the lowest that you can exempt for thin materials.


RE: SA 334 Gr.6 design temperature

thank you all (sorry for my late thanks...i was busy)

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