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What is Grade A A588 steel?

What is Grade A A588 steel?

Grade A A588 steel is a kind of high-strength low-alloy atmospheric corrosion resistant steel. It is suitable for many applications in the unpainted condition. The atmospheric corrosion resistance of A588 Grade A steel is substantially better than that of carbon steels such as A36 and A572gr50 steel with or without copper addition when properly exposed to the atmosphere.
ASTM A588 Grade A steel plate is highly resistant to atmospheric corrosion, superior corrosion resistance over regular carbon steel as a result of the development of a protective oxide film on the metals surface which slows down further corrosion. GradeA A588 weathering steel exhibits 50,000 minimum yield strength characteristic allows cost reduction through the ability to design lighter sections into structures.
A588 Grade A Steel Equivalent
Germany DIN Europe EN England BS Italy UNI  ASTM A588
WTSt 52-3 S355J2G1W WR 50 C Fe 510 D2K1  A588 Grade A
Tensile Requirement of GradeA A588 Steel
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
GradeA A588 low alloy steels are designed primarily to be used in unpainted applications where a reduction in maintenance costs included such as painting. Since their development, weathering steels have been used in a variety of applications, including bridges, rail cars, crane, transmission towers, highway poles, chemical plant, factory and real health medical shipbuilding.
 
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