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TYPE |
CATEGORY
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CHARACTERISTICS
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APPLICATIONS
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SURFACE CONDITION
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ALCOSTA
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Very fine grains due to the
suppression of the growth of aluminium crystal during solidification of
aluminium melt(5 to 10% silicon contained)
Uniform surface condition and
excellent corrosion resistance resulting from the sacrficing effect of
aluminium.
Good apperance after painting
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HEAT RESISTANCE
The heat resistance of ALCOSTA is excellent compared to that of zinc-coatde
steel sheet, galvannealed steel sheet, and cold-rolled steel sheet. Absolutely
no changes in appearance and discoloration are observed even under extended
exposure to the temperature of 450°C the coating material transforms to
aluminiumiron alloy layer so that heat resistance are preserved even if discoloration
occurs. The coating maintains its sacrificial properties up to the temperature
of approximately 600°C.
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TRANSFORMATION OF COATING
LAYER WITH HEATING
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