ASTM A 302/A 302M - 12 Standard Specification for Pressure Vessel Plates, Alloy Steel, Manganese-Molybdenum and Manganese-Molybdenum-Nickel

ASTM, 2012, 3p - A302 Standard Specification for Pressure Vessel Plates, Alloy Steel, Manganese-Molybdenum and Manganese-Molybdenum-Nickel.Brief Summary.
This specification covers manganese-molybdenum and manganese-molybdenum-nickel alloy steel plates intended particularly for welded boilers and other pressure vessels. According to their strength levels, the plates are available in four grades: Grades A, B, C, and D. The maximum thickness of plates is limited only by the capacity of the chemical composition to meet the specified mechanical property requirements. The steel shall be killed and shall conform to fine grain size requirements. The plates shall be subjected to tension test to determine the tensile strength, yield strength, and elongation.Scope.
This specification covers manganese-molybdenum and manganese-molybdenum-nickel alloy steel plates intended particularly for welded boilers and other pressure vessels.
Plates under this specification are available in four grades having different strength levels as follows:Grade Tensile Strength,
ksi [MPa] Type.
A 75–95 [515–655] manganese-molybdenum.
B 80–100 [550–690] manganese-molybdenum.
C 80–100 [550–690] manganese-molybdenum-nickel.
D 80–100 [550–690] manganese-molybdenum-nickel.
The maximum thickness of plates is limited only by the capacity of the chemical composition to meet the specified mechanical property requirements. The minimum thickness is limited to 0.25 in. [6.5 mm].