ASME/ASTM A572

ASTM Standard Logo

High-Strength Low-Alloy Columbium-Vanadium Structural Steel to ASTM A 572 / A 572M Standard

Use:

This specification covers five grades of high-strength low-alloy structural steel shapes, plates, sheet piling, and bars.

Grades 42 [290], 50 [345], and 55 [380] are intended for riveted, bolted, or welded structures. 

Grades 60 [415] and 65 [450] are intended for riveted or bolted construction of bridges, or for riveted, bolted, or welded construction in other applications.

A572 High Strength Steel Chemical Properties

 

Grade 42 [290]

Grade 50 [345]

Grade 60 [415]

Grade 65 [450]

thick>1/2 in.

Grade 65 [450]

thick<=1/2 in.

Carbon, max

0.21

0.23

0.26

0.23

0.26

Manganese, max

1.35

1.35

1.35

1.65

1.35

Phosphorus, max

0.04

0.04

0.04

0.04

0.04

Sulphur, max

0.05

0.05

0.05

0.05

0.05

Silicon

Plates to 1-1/2 in. thick

Plates over 1-1/2 in. thick

 

0.40

0.15-0.40

 

0.40

0.15-0.40

 

0.40

0.15-0.40

N/A

N/A


* Note: For each reduction of 0.01% below the specified carbon maximum, an increase of 0.06% manganese above the specified maximum will be permitted, up to the maximum of 1.35%.

A572 High Strength Steel Mechanical Properties

 

Grade 42 [290]

Grade 50 [345]

Grade 60 [415]

Grade 65 [450]

Tensile Strength:

60,000 psi

[415 MPa]

65,000 psi

[450 MPa]

75,000 psi

[520 MPa]

80,000 psi

[550 MPa]

Min. Yield Point:

42,000psi

[290 MPa]

50,000psi

[345 MPa]

60,000psi

[415 MPa]

65,000psi

[450 MPa]

Elongation in 8":

20% min

18% min

16% min

15% min

Elongation in 2":

24% min

21% min

18% min

17% min

We can supply:

Thickness from 6mm to 150mm (although thicker plates might be manufactured under special order)

Width: from 1,500mm to 4,100mm

Length: from 6,000mm to 20,000mm


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