Sirs,
This query is regarding unlisted materials in clause 323.1.2 of ASME B31.3:2010.
For Ti Gr 2 having room temperature TS/YS at minimum 50/40 ksi for ASTM B861/862 Gr-2,
if some vendor can provide better material having minium 62.5/50 ksi and similar 1.25 times minimum B31.3 required TS/YS at temperature for each heat/thickness combination of material,
can I invoke this material as unlisted one & use allowable stress as min (TS/3, YS/1.5) both at room temperature & design temperature & meet the above clause to remain within ASME code concurrence ? Can I reduce material cost in this way safely?
Regards,
sam
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