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1. Product Characteristics
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This steel is an alloy steel with strong corrosion
resistant elements such as copper, chrome, phosphorous,
and nickel, which raise its corrosion resistance 4 to 8
times that of general steel. Unlike general steel,
the rust formed on corrosion resistant steel turns dark
brown after some time, resulting in beautiful
exterior that does not need painting since the rust does
not flake off. This steel can be used in bridges and for
building exterior finish.
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2. Product Status
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Product
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Standard
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Usage
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Available Sizes
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Plate
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SMA400 (40kg corrosion resistant
steel)
SMA490 (50kg corrosion resistant steel)
SMA570 (60kg corrosion resistant steel)
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Bridges, building structures
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Thickness: 6 ~ 50 mm
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Hot Rolled Coil
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SPA-H
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Building exterior finish
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Thickness: 1.2~22.0 mm
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PAWS50
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Building exterior finish
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Thickness: 1.6~12.7 mm
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* Painted corrosion
resistant steel: SMA400/490AP, SMA400/490BP, SMA400/490CP,
SMA570P
* Unpainted corrosion resistant steel: SMA400/490AW,
SMA400/490BW, SMA400/490CW, SMA570W
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3. Level of Quality
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Product
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Standard
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Chemical Composition
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Mechanical Property
(TS, kg/mm²)
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Setting Time for Non-Crystallized
Spinel Layer (with concentration of Cu, P, Cr)
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Weather Act Treatment
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Non-Treatment
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Plate
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SMA490BW
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C-Cu-Cr-Ni
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50~62
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Approximately 1 Year
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Approximately 7 Year
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SMA570W
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C-Cu-Cr-Ni
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58~73
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Hot Rolled
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SPA-H
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C-Cu-Cr-Ni
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≥45.9
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