BARO METAL

Quality Steel Products made in Korea

Hot Dip Aluminium Coated Steel Sheet (AL-COAT)

Product Features      

Hot-dip aluminum coated steel sheet combines the mechanical properties of cold-rolled steel sheet with aluminum’s high resistance retention, heat reflection, and superior rust resistance. 

Superior Heat Resistance

Lengthy exposure to temperatures up to 450 degrees Celsius causes very little change in ALCOAT and does not affect its attractive surface brightness, compared to galvanized steel sheet and cold-rolled steel sheet. 

  • Heat Resistance Test Results

Test conditions: Naked eye comparison of the sheet after two rounds of test procedures (Heating (1.5 Hr), maintaining (5 Hr), cooling (17 Hr)) 

○ : No change △ : Turns a bit dull × : Turns blackish 

○ : No change △ : Turns a bit dull × : Turns blackish 

  • Heat Resistant System of ALCOAT steel

When heated, an oxide film is formed on the surface as the alloy layer is activated, protecting its surface.

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Superior Heat Reflectivity

Elegant surface of ALCOAT reflects about 80% of the heat at a temperature of 450 degrees Celsius. Its reflection rate goes up to 95% where infrared rays are present. This makes ALCOAT the ideal choice for producing the heat reflector plates in toasters, ovens, gas ranges and oil stoves.

  • Heat Reflectivity
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Coating Layers      

Types of ALCOAT steel sheets are categorized by the components of the molten pot. Applications are as follows.

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Cross section of the coated layers

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Production Availability      

Production Availability by Size and Coating Weight

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Post-treatment Type

※  Chromating  - Average : 11.5 mg/m² (one side) - Range : 6.8~18.9mg/m² (one side)   ※  Oiling   - Slight : 500~800mg/m² (both sides) - Normal : 1,000~1,400mg/m² (both sides) - Heavy : 1,400~2,000mg/m² (both sides)

Chromating
- Average : 11.5 mg/m² (one side)
- Range : 6.8~18.9mg/m² (one side)


Oiling
- Slight : 500~800mg/m² (both sides)
- Normal : 1,000~1,400mg/m² (both sides)
- Heavy : 1,400~2,000mg/m² (both sides)

Grade and Symbol

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Mechanical Properties

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Applications      

Automotive components : muffler, exhaust pipe, fuel tank

auto

Appliances : Electric stove, gas range, bread machine, toaster, frying pan, dryer, air conditioner, heat exchanger, stovepipe, pre-heater, dryer, duct, boiler, gas oven, rice cooker

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Construction : Walls and roofs of chemical factories, fireproof walls

Applied Specifications     

KS D 3544
JIS G 3314
ASTM A 525 (FOR ASTM A463)
EN 10143