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ASTM A588 Steel: Specifications & Listings

ASTM A588: ASTM A588 is a high-strength low-alloy weathering steel with improved atmospheric corrosion resistance. It forms a stable oxide layer under normal environmental exposure.

Forms: Plate Category: Structural Steel (Corten / Weathering)
Grade Details
GradeASTM A588
Standard ASTM A588
ApplicationsUsed for bridges, railway wagons, transmission poles, architectural structures, containers, and outdoor construction.
Most Active InWest (Gujarat, Maharashtra)
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Grade Standard Match
ASTM A588 Grade A ASTM A588 Close Alternative
CSA G40.21 50W CSA G40.21-13 (R2023) Close Alternative
CSA G40.21 350A CSA G40.21-13 (R2023) Related Material
ASTM A959 443 ASTM A959:2011 Related Material
IS 1570 (Part 6) 50T8 IS 1570 (Part 6):1996 Related Material
IS 1570 (Part 6) 55T8 IS 1570 (Part 6):1996 Related Material
GOST 19281 09G2S GOST 19281-2014 Related Material
IS 1570 (Part 6) 60T6 IS 1570 (Part 6):1996 Related Material
Matched by chemical composition and mechanical properties, not a formal equivalence claim. Always verify against the applicable standard before substitution.
Chemical Composition (%)
C Mn Si Cu Cr Ni P S
0.19 max 0.80-1.25 0.30-0.65 0.20-0.40 0.40-0.70 0.40 max 0.04 max 0.05 max
Mechanical Properties
Tensile Strength 485-630 MPa
Yield Strength 345 MPa min
Elongation 18-21%
Hardness 140-190 HB

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Plate (2)

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ASTM A588 Plate
8.900 MT
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ASTM A588 Plate
5.400 MT
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