Hot Dipped Galvalume/GL Steel Coil with Aluzinc coated has a particularly smooth and silver-color spangle surface. The special aluminum and zinc coating structure makes it have excellent corrosion resistance, good heat resistance, good adhesion between the coating and the paint film, good processing performance of be punched, cut, welded, etc.
DC51D+AZ Hot Dipped Galvalume Steel Coil has gained wide reputation throughout South America, Africa, Middle East, Middle Asia and Southeast Asia.
It is widely applied in industries such as building materials, house roofing roof steel sheet plate, automotive manufacture, interior decoration of ships, and Household appliances.
DC51D+AZ steel Chemical composition
|
|
Chemical composition % |
|||||||
|
C |
Si |
Mn |
P |
S |
Alt |
Ti |
Nb |
|
|
DC51D+AZ |
0.10 |
--- |
0.5 |
0.035 |
0.035 |
--- |
--- |
--- |
DC51D+AZ steel mechanical property
|
|
Tensile Strength |
Yield Strength |
n90 |
r90 |
Elongation% min |
The coating adhesion |
|||
|
min |
min |
<0.7mm |
>0.7mm |
<140/140 |
>140/140-175/175 |
>175/175 |
|||
|
DC51D+AZ |
270-550 |
- |
- |
- |
20 |
22 |
0a |
1a |
2a |
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Specification of Galvalume Steel
|
Standard |
AISI,ASTM,GB,JIS |
Material |
SGCC,S350GD+Z,S550GD+Z,DX51D,DX52D,DX53D |
|
Thickness |
0.16-1.2mm |
Width |
600-1250mm |
|
Tolerance |
"+/-0.02mm |
Zinc coating |
60-275g/m2 |
|
Coil ID |
508-610MM |
Coil Weight |
3-8 tons |
|
Technique |
Hot rolled, cold rolled |
Package |
seaworthy package |
|
Certification |
ISO 9001-2008,SGS,CE,BV |
MOQ |
25 TONS (in one 20ft FCL) |
|
Delivery |
15-20 days |
Monthly Output |
10000 tons |
|
Surface treatment |
oiled, passivation or chromium-free passivation, passivation+oiled, chromium-free passivation+oiled, resistant to fingerprints or chromium-free resistant to fingerprints |
||
|
Spangle |
regular spangle,minimal spangle, zero spangle,big spangle |
||
|
Payment |
30%T/T in advanced+70% balanced;irrevocable L/C at sight |
||
|
Remarks |
Insurance is all risks and accept the third party test |
||
Equivalent Grade
| Equivalent Grade | |||||
| Q/BQB 425 | QB/T 14978 | AS 1397 | EN 10346 | ASTM A792M | JIS G 3321 |
| DC51D+AZ | DX51D+AZ | G2+AZ | DX51D+AZ | CS type B | SGLCC |
| CS type C | |||||
| DC52D+AZ | DX52D+AZ | G3+AZ | DX52D+AZ | DS | SGLCD |
| DC53D+AZ | DX53D+AZ | - | DX53D+AZ | - | SGLCDD |
| DC54D+AZ | DX54D+AZ | - | DX54D+AZ | - | - |
| S250GD+AZ | S250GD+AZ | G250+AZ | S250GD+AZ | SS 255 | - |
| S300GD+AZ | S300GD+AZ | G300+AZ | - | - | SGLC400 |
| S350GD+AZ | S350GD+AZ | G350+AZ | S350GD+AZ | SS 345 | SGLC440 |
| Class1 | |||||
| S450GD+AZ | - | G450+AZ | - | SS 410 | SGLC490 |
| SS 480 | |||||
| S550GD+AZ | S550GD+AZ | G550+AZ | S550GD+AZ | SS 550 | SGLC570 |
| Class1 |
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FAQ
1. What is Galvalume steel?
Galvalume is a steel substrate coated with an alloy consisting of 55% aluminum, 43.4% zinc, and 1.6% silicon. This combination provides the barrier protection of aluminum and the sacrificial protection of zinc.
2. Is Galvalume better than Galvanized steel?
While both are corrosion-resistant, Galvalume typically lasts 2 to 4 times longer than Galvanized steel in most environments. Galvalume offers superior resistance to rust, while Galvanized is better suited for highly alkaline environments (like animal confinement).
3. How long does Galvalume steel last?
In a typical environment, a Galvalume roof or panel can last 40 to 60 years. Most manufacturers offer warranties ranging from 20 to 25 years against perforation.
4. Does Galvalume steel rust?
Galvalume is highly resistant to rust. However, it can experience "edge creep" where the cut edges are exposed, or rust if it is installed in contact with incompatible materials like copper or treated lumber.
5. Can Galvalume be used near the ocean?
Galvalume is excellent for many coastal areas, but it is not recommended for properties within 1,500 feet of breaking salt spray. For severe marine environments, aluminum or stainless steel is preferred.
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