world of steel A Division of Ellias International




      POCOS - ALCOSTA (Hot Dipped Aluminized Steel Sheet)

THE QUALITY CHARACTERISTICS

HEAT RESISTANCE
The heat resistance of ALCOSTA is excellent compared to that of zinc-coated 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 aluminium-iron alloy layer so that heat resistance and corrosion resistance are preserved even if discoloration occurs. The coating maintains its sacrificial properties up to the temperature of approximately 600°C.

 

HEAT REFLECTIVITY
The alcosta is provided with exellent thermal reflectivity due to the fitness of its surface. The thermal reflectivity of ALCOSTA at 450°C reaches up to approximately 80%, and this is applied to thermal reflectors for toasters, gas ranges, oil stove, and so forth.

 

HIGH CORROSION RESISTANCE
The corrosion resistance of ALCOSTA is excellent due to the coating characteristics to form a thin stable oxide layer and hydroxidation layer in the air and water, respectively.

 

WEATHERABILIY
ALCOSTA is provided with excellent weatherability under severely corrosive environments as in industrial area due to its tendency to form a fine and stable oxide layer on the surface.

 

FORMABILITY
ALCOSTA has generally been understood being poor in formability due to the presence of brittle alloy layer between the steel and aluminium layers.But, when formability of ALCOSTA is compared with that of cold-rolled steel sheets and galvanized steel sheets, DQ and DDQ grades of ALCOSTA shows better formability than those.

 

PAINTABILITY
Paintability of aluminium coating is better than of galvanized sheet sheet. Inorder to improve paint adhesion quality, chemical treatment is neccessary. But,POCOS`s chromate solution makes the excellent paintability without further chemical treatment.


SPECIFIC USES

Home Appliances: Gas ranges, stove, microwave ovens, electric frying pans
Thermal Equiments and Automotive Applications: Drying furnace, gas fuel tanks, Car Muffler components, exterior material, duct.


SCOPE OF MANUFACTURER

SIZE AVAILABILITY
Thickness:
0.2mm - 2.4mm
Width       : 500mm - 1300mm

SPECIFICATION

TYPE

Heat Resistant
Type 1
Commercial Quality PA1C SA1C SA1C
A463-Type 1
Drawing Quality PA1D SA1D SA1D
Deep Drawing Quality PA1E SA1E SA1E


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