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marsich (Materials) (OP)
31 Oct 07 9:54
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)

stanweld (Materials)
31 Oct 07 10:09
The thickness is not subject to charpy impact testing

Helpful Member!  marsich (Materials) (OP)
31 Oct 07 10:33
Ok that's true, but I would like to know the minimum design temperature for SA334Gr6 and SA210.
metengr (Materials)
31 Oct 07 11:22
The minimum service temperature w/o impact testing is -20 deg F.
marsich (Materials) (OP)
31 Oct 07 11:25
metengr, did you refer to SA334Gr6 or SA210?
Where can I found this value in ASME in order to explain that to my inspector?
metengr (Materials)
31 Oct 07 11:44
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).
eliebl (Mechanical)
31 Oct 07 12:21
See UCS-66(d) for the lowest that you can exempt for thin materials.

marsich (Materials) (OP)
31 Oct 07 18:42
thank you all (sorry for my late thanks...i was busy)

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