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发表于 2020-3-27 12:29:41
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SA-20, 19.3
19.3 All heat treatment, exclusive of subcritical heating to
soften thermally cut edges, shall be reported, including temperature
ranges and times at temperature. This exclusion does
not apply to those plates with specified minimum tensile
strengths of 95 ksi [655 MPa] or higher, unless such subcritical
heating is accomplished at temperatures at least 75°F [40°C]
below the minimum tempering temperature. The reports shall
state whether the plates only, the test coupons only, or both
plates and test coupons were heat treated. |
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