ASTM A572 Grade 50 Steel Equivalent, Gr 65, 60 …
ASTM A572 grade 50 steel is a low-alloy high-strength structural steel with a yield strength of 50 ksi (345 MPa) and a tensile strength of 65 ksi (450 MPa). It has better mechanical properties than ASTM A36 steel. ASTM A572 contains 5 yield point grades: Grade 42, Grade 50, Grade 55, Grade 60 and Grade 65.