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ASTM A572/A572M

High-Strength Low-Alloy Columbium-Vanadium Structural Steel

Grades 42, 50, 55, 60 and 65 (ksi minimum yield) for plates, shapes, bars and sheet piling.

US structural steel is specified by ASTM number. AISI/SAE numbers (1020, 4140…) classify carbon and alloy steels by composition and are not used for structural plate.

Grades on Matipedia

ASTM A572/A572M

A572 Grade 50

The common US high-strength structural plate: 50 ksi (345 MPa) yield, 65 ksi (450 MPa) tensile.

ReH

≥ 345 MPa

Rm

≥ 450 MPa

Confirmed

3

Corroborated

4

Single source

2

Disagreements explained

4