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ASTM A588 Grade A and A588 Grade B corten steel sheet and coils are 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. Both are high-strength low-alloy weathering steels which exhibits 50,000 minimum yield strength characteristic allows cost reduction through the ability to design lighter sections into structures.
The elevated levels of copper in A588 Corten plate produces a self healing characteristic that produces a natural red oxide patina look. This weathering grade steel is often used in unpainted applications such as bridges, guard rails, sign poles and highway structures because of its reduced maintenance cost and long-life durability.
These 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.
ASTM A588 corten steel sheet and coil is suitable for many applications in the unpainted condition. The atmospheric corrosion resistance of A588 is substantially better than that of carbon steels such as A36 and A572-50 with or without copper addition when properly exposed to the atmosphere.
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