ASTM A588 Grade B

ASTM A588 Grade B

The ASTM A588 specification is the Standard Specification for High-Strength Low-Alloy Structural Steel , up to 50 ksi Minimum Yield Point, with Atmospheric Corrosion Resistance for applications where strength and durability are needed. The required ASTM G101 Corrosion Resistance Index must be ≥...

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The ASTM A588 specification is the Standard Specification for High-Strength Low-Alloy Structural Steel , up to 50 ksi Minimum Yield Point, with Atmospheric Corrosion Resistance for applications where strength and durability are needed.  The required ASTM G101 Corrosion Resistance Index must be ≥ 6.0.    In addition to the typical application in welded bridges and buildings, the specification is also commonly used in passenger rail cars.


ASTM A588  Chemical Composition

Grade

The Element Max (%)

C

Si

Mn

P

S

Ni

Nb

A588

0.20

0.15-0.50

0.75-1.35

0.04

0.05

0.50

..

Cu

Cr

Mo

N

V

0.20-0.40

0.40-0.70

0.01

0.01-0.10

Carbon Equivalent: Ceq = 【C+Mn/6+(Cr+Mo+V)/5+(Ni+Cu)/15】%

 

Mechanical Property of A588 Grade B steel plate

A588 Grade B

Tensile strength, kis [MPa]

Tensile strength, kis [MPa]

100mm or under

[485]

100mm-125mm

[460]

125mm-200mm

[435]

Yield strength, min, kis [MPa]

Yield strength, min, kis [MPa]

100mm or under

[345]

100mm-125mm

[315]

125mm-200mm

[290]

Elongation in under. [50 mm], min, %

21

Elongation in under. [50 mm-200mm], min, %

18



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