Aluminum-zinc alloy coated steel is the product, which ideally
combines characteristics of aluminum coated steel and galvanized
steel.
| ALUMINUM
ZINC ALLOY COATED STEEL |
| Characteristics |
It consists of aluminum (55% in weight ratio but 80%
in surface volume ratio), zinc (43.4% in weight), and
silicone (1.6% in weight ratio) so it has both aluminum-unique
corrosion-resistance and heat resistance and zinc-unique
characteristics. |
| Applications |
 Building
interiors or exteriors
Electricity
Electronic
Appliances
Automobile
Parts
Drain
Pipes |
| PRODUCT
RANGE |
| Thickness (mm) |
0.35 ~ 2.30 |
| Width (mm) |
600 ~ 1270 |
| Sheet Length (mm) |
600 ~ 5000 |
| Coil Weight (Max) |
12 MT |
| Coil I.D (mm) |
508 |
|
| COATING
WEIGHT |
| Al.Zn alloy Coating Weight |
Coating Thickness ( ) |
| 100 g/m©÷ |
26 |
| 150 g/m©÷ |
40 |
| 200 g/m©÷ |
52 |
|
| SURFACE
TREATMENT |
Chromated
Anti-Finger Printed
Oiled
Cleanlume
Lubricant Aluminum-Zinc Alloy Coated
Transparent Prepainted Alunminum-Zinc Alloy Coated |
| Cleveland Condensing
Cabinet Test |
| |
Specimen |
Result |
| |
Coating WT |
Thickness |
| Al-Zn Alloy Coated |
150 g/m©÷ |
40
(Both) |
No red oxidation rust after 35,300 Hr run |
| Galvanized |
275 g/m©÷ |
40
(Both) |
Red Oxidation Rust before 6,000 Hr run |
* Condition : Exposed surface change under
relative humidity 100% x 60¡ÆC
| Periodic Water-Vapor
Test
|
|
|
22 cycle
|
75 cycle |
116 cycle
|
|
|
Red Rust |
External Appearance |
Red Rust |
External Appearance |
Red Rust |
External Appearance |
|
Galvanized |
1 |
Red rust at cut section |
100 |
- |
100 |
- |
|
Al-Coated |
0 |
Traces pf red rust at cit section |
10 |
Red rust at cut section |
20 |
Rust at cut section & bends |
|
Al-Zn Alloy Coated |
0 |
Bright Surface |
0 |
Dark Surface |
0 |
Red rust at cut section |
*Condition : Water-Vapor box 55¡ÆC environment,
2 Hr-dry after exposing of 22 hours (1cycle)
| Condition : Conforming
to ASTM B-117-73 |
|
Coating Weight |
Number of hours before
visible red rust |
| Al-Zn Alloy Coated |
150 g/m©÷ |
40
(Both) |
5,500 Hr |
| Galvanized |
275 g/m©÷ |
40
(Both) |
300 Hr |
| WORKABILITY (AL-ZN
ALLOY COATED STEEL) : |
Same characteristics with Galvanized Steel Sheet in
Workability
Formability
Micro Crack at forming section is less than Galvanized Steel
Sheet.
| Bending |
OT-Bending |
No Peel Off |
Lock-Forming |
Good |
No Peel Off |
Impact Test |
Good |
No Peel Off |
| Comparison of Corrosion Resistance
at high |
OT-Bending |
Temperature range 480
¡ÆC ~ 540 ¡ÆC |
Al-Zn Alloy Coated < Al-Coated |
| Temperature range 590 ¡ÆC ~ 650 ¡ÆC |
Al-Zn Alloy Coated = Al-Coated |
| Temperature range 700 ¡ÆC & over |
Al-Zn Alloy Coated > Al-Coated |
| Material |
Heat-Transmission : H/Watt/m©÷ |
Al-Coated 300 g/m©÷ |
40 |
| Al-Zn Alloy Coated 150 g/m©÷ |
65 |
| Galvanized : 275 g/m©÷ |
120 |
| Asbestos Cement |
150 |
Al-Zn Alloy Coated Steel can be painted without pre-treatment
or weathering when used for signboard or general purpose, due
to its superior adhesive strength between zinc layer and paint,
unlike galvanized steel which requires weathering or pre-treatment.
Further information is available by contacting Moriah
Co. Ltd. for your specified requirement which prior consultation
is necessary. |
 |
