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A-572 Grade 50, 60, 65

Overview

A 572 Grade 50 is a high-strength, low alloy (HSLA), hot rolled steel plate. This low carbon / low alloy steel promotes good formability and weldability.

Chemical Requirements

Thickness in.(mm) Grade Carbon, max,% Maganese,C
max,%
Phosphorus, max,% Sulphur max,% SiliconI,D,E SiliconJ,D
max,% range,%
6 (150) 42 (290) 0.21 1.35F 0.04 0.05 0.40 0.15-0.40
4 (100) 50 (345) 0.23 1.35F 0.04 0.05 0.40 0.15-0.40
1¼ (32) 60 (415) 0.26 1.35F 0.04 0.05 0.40 G
>½-1¼ (13-32) 65 (450) 0.23 1.65F 0.04 0.05 0.40 G
≤½ (13)H 65 (450) 0.26 1.35 0.04 0.05 0.40 G

Tensile Requirements

Grade Yield Point, min Tensile Strength, min Min. Elongation, %B,C,D
ksi (MPa) ksi (MPa) in 8 in.
(200 mm)
in 2 in.
(50 mm)
42 42 (290) 60 (415) 20 24
50 50 (345) 65 (450) 18 21
60 60 (415) 75 (520) 16 18
65 65 (450) 80 (550) 15 17
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