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ANSWER:A792 SS Grade 50(340) is a steel grade in American standard ASTM A792/A792M, this specification covers 55% aluminum-zinc alloy-coated steel sheet in coils and cut lengths. A792 SS Grade 50(340) is Structural steel. A792 SS Grade 50(340) has three classes: Class 1, Class 2, Class 4.
Coating composition of A792 SS Grade 50(340) steel: the 55% aluminum-zinc alloy coating composition, by weight is normally 55% aluminum, 1.6% silicon, and the balance zinc.
A792 SS Grade 50(340) steel coating finish is N(Normal spangle) or M(Minimized spangle)
A792 SS Grade 50(340) steel Surface quality A (As coated surface) , B(Improved surface), C(Best quality surface)
A792 SS Grade 50(340) steel Surface treatment: Chemically treated or not chemical treated, oiled or not oiled.
A792 SS Grade 50(340) steel Coating mass are:
AZ30,AZ35,AZ40,AZ50,AZ55,AZ60,AZ70,AZM100,AZM110,AZM120,AZM150,AZM165,AZM180,AZM210
A792 SS Grade 50(340) steel yield strength should be not less than 50Ksi(340MPa)
A792 SS Grade 50(340) steel tensile strength
Class 1 should be not less than 65Ksi(450MPa)
Class 4 should be not less than 60Ksi(410MPa)
A792 SS Grade 50(340) steel Elongation should be not less than 12%
