- Products
Steel Products
Non-Steel Products
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.
muffler, exhaust pipes, fuel tanks
Electric stove, gas range, bread machine, electric stove, toaster, frying pan, dryer
heat exchanger, stovepipe, pre-heater, dryer, duct
Walls and roofs of chemical factories, fireproof wall
Steam cover, other chemical equipment
Lengthy exposure to temperatures up to 450 degrees Celsius causes very little change in ALCOT and does not affect its attractive surface brightness, compared with galvanized steel sheet and cold-rolled steel sheet.
Heat Resistance Test Results
Test conditions: Naked eye comparison the sheet after two rounds of test procedures (Heating (1.5 Hr), maintaining (5 Hr), cooling (17 Hr))
| category | 300℃ | 350℃ | 400℃ | 450℃ | 500℃ | 550℃ | 600℃ |
|---|---|---|---|---|---|---|---|
|
ALCOT |
○ |
○ |
○ |
○ |
△ |
△ |
× |
|
GALVALUME |
○ |
○ |
△ |
△~× |
× |
× |
× |
|
GI |
△ |
△~× |
× |
× |
× |
× |
× |
○ : No change △ : Luster down × : Tums blackish
Heat Resistance Test Results
When heated, an oxide film is formed on the surface as the alloy layer is activated, protecting its surface.
The highly elegant surface of ALCOT 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 ALCOT the ideal choice for producing the heat reflector plates in toasters, ovens, gas ranges and oil stoves.
Heat Reflectivity
| Type | ALCOT | GI |
|---|---|---|
|
100℃×24hr |
80% |
80% |
|
450℃×24hr |
80% |
15% |
Types of ALCOT steel sheet are categorized by the components of the molten pot. Applications are as follows
| Classification | Type Ⅰ Alumininized | Type Ⅱ Alumininized |
|---|---|---|
|
components of the molten pot. |
Al-Si(8~10%) |
Al |
|
Components of the alloy layer |
Type Ⅰ Aluminized |
Type Ⅱ Aluminized |
|
Application |
Heat resistance treatment |
Weather resistance (construction material) |
The highly elegant surface of ALCOT 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 ALCOT the ideal choice for producing the heat reflector plates in toasters, ovens, gas ranges and oil stoves.
Heat Reflectivity
| Chromated | Oiled | Chromated & Oiled | No Treatment |
|---|---|---|---|
|
○ |
○ |
○ |
○ |
| Class | JIS G3314 | ASTM A 463 | ASTM A 463-96a | EN 10154 | |
|---|---|---|---|---|---|
|
Commercial
Quality
(Type1) |
CQ |
SA1C |
CQ |
CS TYPE A |
DX51D
|
|
CS TYPE B |
DX52D
|
||||
|
CS TYPE C |
|||||
|
Drawing
Quality
(Type1) |
DQ1 |
SA1A |
ADQ |
- |
DX53D
|
|
DQ2 |
SA1D |
DQ |
FS |
DX54D |
|
|
DDS |
DX55D |
||||
|
DQ3 |
SA1E |
DQSK |
EDDS |
- |
|
|
EDDQ |
- |
EDDQ |
EDDS |
- |
|
|
Structural
Quality
(Type1) |
Grade A |
SAC31 |
SQ-A |
Grade230 |
- |
|
Grade B |
SAC35 |
SQ-B |
Grade255 |
S250GD
|
|
|
S280GD
|
|||||
|
Grade C |
SAC41 |
SQ-C |
Grade275 |
S320GD
|
|
|
Grade D |
SAC45 |
SQ-D |
Grade340 Class1 |
S350GD
|
|
|
Grade340 Class2
|
|||||
|
Grade F |
|
- |
Grade340 Class3 |
- |
|
|
Grade E |
- |
|
Grade550 |
- |
|
| Class | Tensile Strength (㎏/㎟) |
Yield Point (㎏/㎟) Thickness (㎜) |
Elongation(%) Thickness(㎜) |
|||||
|---|---|---|---|---|---|---|---|---|
|
|
|
|
|
T≤0.5 |
0.5＜ t |
t≤0.5 |
0.5＜ t≤1.2 |
1.2 |
|
Commercial Quality |
Grade A |
SAC31, SQ-A |
31min |
21min |
21min |
20min |
20min |
20min |
|
Grade B |
SAC35, SQ-B |
35min |
25min |
25min |
20min |
20min |
20min |
|
|
Grade C |
SAC41, SQ-C |
41min |
30min |
30min |
18min |
18min |
18min |
|
|
Grade D |
SAC45, SQ-D |
45min |
37min |
37min |
18min |
18min |
18min |
|
-KS D 3544
-JIS G 3314
-ASTM A 525 (FOR ASTM A463)
-EN 10143
