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ASME SA738 Grade A is a kind of C-Mn-Si steel plates material used to fabric middle or low temperature pressure vessels. Obviously, SA738 is divided into three grades or levels :SA738 Gr. A, SA738 Gr. B, SA738 Gr. C . In order to meet the property requirement of ASME SA-738/SA-738M standard, this material must be done heat-treatment.
ASME SA738 Grade A steel