There is no hardness requirement in ASME Section VIII Division 1 for carbon or low alloy steels. The only hardness requirements are in UF-31(b)(1)(b) for liquid quenched and tempered vessels. See also Mandatory Appendix 22-4(c). Never have been.
On Sunday, February 10, 2019 at 4:52:08 AM UTC-6, RKD wrote:
-- On Sunday, February 10, 2019 at 4:52:08 AM UTC-6, RKD wrote:
For a pressure vessel designed with stamped under ASME VIII Div.1, there is a requirement that: "Hardness values should not exceed 200 brinell for the welds / material of shell."
Shell material is specified as SA516 Grade 70.
I am concerned the requirements for hardness and material will automatically require stress relief for all pressure vessel parts.
Would SA516 Grade 70 have hardness lower than 200 Brinell?
Thank you.
Regards,
RKD
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