ASTM Standard A514. Standard specification for high-yield-strength, quenched, and tempered alloy steel plate, suitable for welding. This specification covers quenched and tempered alloy steel plates of structural quality intended primarily for use in
ASTM A514 Grade Q ASTM A514/A514M chemical. ASTM A514 Grade Q ASTM A514/A514M is an alloy of iron and carbon and other elements. Because of its high tensile strength and low cost, it is a major component used in buildings, infrastructure, tools, ships, automobiles, machines, appliances.