Technical requirement for ASTM A537 Pressure Vessel Plate

Technical requirements of ASTM A537 pressure vessel plate like yield strength and tensile strength shall conform to this specification ASTM A537. The maximum thickness of plates furnished under this specification is 4 in. [100 mm] for A537 Class 1 and 6 in. [150 mm] for A537 Class 2 and A537 Class 3 steel plates.
ASTM A537 tensile requirement

Class	Heat  Treatment	Thickness	Yield  Strength,  min, ksi  [MPa]	Tensile  Strength,  min, ksi  [MPa]
Class 1	Normalized	21/2 in. and under [65 mm and under]	50  [345]	70  [485]
		Over 21/2 to 4 in.  [Over 65 to 100 mm]	45  [310]	65  [450]
Class 2	Quenched and tempered	21/2 in. and under [65 mm and under]	60  [415]	80  [550]
		Over 21/2 to 4 in.  [Over 65 to 100 mm]	55  [380]	75  [515]
		Over 4 to 6 in.  [Over 100 to 150 mm]	46  [315]	70  [485]
Class 3	Quenched and tempered	21/2 in. and under [65 mm and under]	55  [380]	80  [550]
		Over 21/2 to 4 in.  [Over 65 to 100 mm]	50  [345]	75  [515]
		Over 4 to 6 in.  [Over 100 to 150 mm]	40  [275]	70  [485]

A537 Class 1 steel plate is widely used in petroleum, chemical, power station, boiler and other industries, used in the production of reactors, heat exchangers, separators, spherical tanks, oil and gas tanks, liquefied gas tanks, nuclear reactor pressure shells, boiler drums, liquefaction Equipment and components such as oil cylinders, high-pressure water pipes for hydropower stations, and turbine volutes.
 

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