hardness weld metal SA 516 Gr70
hardness weld metal SA 516 Gr70
(OP)
Hi, Has anybody realated links for hardness (ASME???) or valuable results of hardness test on SA 516 Gr70 (1"= 25mm thickness) without PWHT, parent metal, HAZ, weld metal.
Thanks
Thanks





RE: hardness weld metal SA 516 Gr70
Background:The ASME B&PV Code is currently evaluating revising the existing thickness limitation on P-No 1 materials from greater than 3/4" in Section I to 1.25" thickness or less, based on carbon equivalent. As part of this evaluation, a white paper was generated on this subject with extensive hardness testing of the base metal and base metal HAZ. Cooling rate, number of weld passes, preheat requirements and base metal thickness were evaluated.
My eye-ball microhardness (HV scale) estimates from graphs
BM away from the weld < 200 HV
Peak hardness ~225 HV
Weld metal hardness should be between the BM and HAZ hardness.
RE: hardness weld metal SA 516 Gr70
RE: hardness weld metal SA 516 Gr70