ASME SA517 Grade P in the standard SA517/SA517M is a kind of high tensile alloy steel plates material used to fabric high temperature pressure vessels. ASME SA517 have six grades or levels. They are : Grade A, Grade P, grade E, grade F, grade J , grade P. ASME SA517 Grade P need to be done the (Quenching + Tempering ) heat-treatment to meet the property requirement in the standard ASME SA517.

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ASME SA517 Grade P application :
With high strength, good plasticity, toughness and welding performance, mechanical module supports used in nuclear power plants.