Dear All,

As per piping mat spec, I should use A358 304H(temp:740 deg C) material in piping stress system. Material allowables for 304H is not given CAESAR II and Also not given in ASME B 31.3. A 358 304 & 304L allowables are available. So Can anybody suggest how to calcuate allowables for A 358 304H or how to get the material allowables.

Thanking you,

With best regards,
Srisri.

B31.3 paragraph 302.3.2(d) establishes the basic allowable stress for materials not found in Appendix A. A source for the raw data required by 302.3.2 (e.g., yield and tensile strength) may be ASME Section II Part D.