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ASTM A588 Grade B Steel — Specifications & Listings

ASTMHigh strength low alloy weathering steel, Grade B variant with slightly different chemistry than Grade A. Used for bridges, buildings and exposed structures requiring corrosion resistance without protective coatings.

Forms: Plate Category: Mild Steel
Grade Details
GradeASTM A588 Grade B
StandardASTM
DescriptionHigh strength low alloy weathering steel, Grade B variant with slightly different chemistry than Grade A. Used for bridges, buildings and exposed structures requiring corrosion resistance without protective coatings.
Applications
Chemical Composition (%)
C Mn Si P S Cu Cr Ni Mo
<=0.20 0.75-1.25 0.15-0.30 <=0.040 <=0.050 0.20-0.40 0.40-0.70 <=0.50 0.02-0.10
Mechanical Properties
tensile_strength 485 MPa min
yield_strength 345 MPa min
elongation 18% min
hardness 140-190 HB

Active ASTM A588 Grade B Listings on M-EX

ASTM A588 Grade B Plate
1.400 MT
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ASTM A588 Grade B Plate
5.600 MT
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