ASTM A514/A514M Standard Standard Specification for High-Yield-Strength, Quenched and Tempered Alloy Steel Plate, Suitable for Welding,ASTM A514/A514M standard specification covers high-yield, quenched, and tempered alloy steel plates for use in welded bridges and other structures.ASTM A514/A514M Standard main steel grade:ASTM A514Grade T<S,R,Q,B,M,K,J,H(A514GRT,A514GRS,A514GRR,A514GRQ,A514GRM) and so on.