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ALCOT. ALCOT is a Dongbu Steel brand name for hot-dip aluminium coated steel sheets and coils. Application. 1. Automobiles : mufflers, exhaust pipes, fuel tanks, etc. 2. Combustion chambers, heat exchangers, dryers, air conditioners, etc.

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ALCOT

  • ALCOT is a Dongbu Steel brand name for

  • hot-dip aluminium coated steel sheets and coils.


Application

1. Automobiles : mufflers, exhaust pipes, fuel tanks, etc.

2. Combustion chambers, heat exchangers, dryers,

air conditioners, etc.

3. Home Appliances : boilers, gas ovens, toasters,

rice cookers, chimneys, grills, heaters, gas stoves,

a picture tube bands, microwave ovens,

rotisseries, etc.

4. Building Industries : decks, walls, roofs, etc.


Characteristics

Heat Resistance

  • Test condition

  • - Heating : 1.5hr

  • - Maintaining temperature : 5hr

  • - Cooling : 17hr

  • Judgement : Visual inspection after 2 cycles test.

  • Result

○ : No change △ : Luster down × : Tums blackish


Characteristics

Heat Resistance

  • Heat resistance mechanism for ALCOT

Heating

Heating

Before heating

Al

Al

High temperature

oxide film

Alloy layer

Alloy layer

Alloy layer

Fe

Fe

Fe


Characteristics

Heat Reflectivity

(%)

Corrosion Resistance

  • Salt spray test : 5% Nacl 35℃

  • Hours to red rusting of 1㎛ of

  • coating thickness

  • - ALCOT : 100hrs

  • - GALVALUME : 70hrs

  • - GI : 20hrs


available size range

subject to prior negotiation

Scope of Manufacturing Field

Size Availability


available size range

subject to prior negotiation

Scope of Manufacturing Field

Coating Weight


Scope of Manufacturing Field

Post-treament

  • Chromating

  • - Average : 11.5mg/m2(one side)

  • - Range : 6.8-18.9mg/m2(one side)

  • Oiling

  • - Slightly : 500-800mg/m2(one side)

  • - Normal : 1,000-1,400mg/m2(one side)

  • - Heavy : 1,400-2,000mg/m2(one side)


Specification

Grade and Symbol


Specification

Mechanical Properties

  • Specification


Specification

Mechanical Properties


Specification

Mechanical Properties

  • Dongbu Trend


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