DC52D+AZ is a cold-forming, drawing-grade hot-dip 55% aluminum-zinc alloy coated (galvalume) steel sheet/strip, commonly used for moderate drawing and forming applications. It follows Chinese standards (e.g., Q/BQB 420, GB/T 14978) and is equivalent to DX52D+AZ in the European standard EN 10346.
AZ stands for aluminum-zinc alloy, which is the material of the steel coating. AZ50 refers to the total weight of both sides of the aluminum-zinc alloy coating in the three-point test in ASTM a972 standard is 0.50 ounces/square foot, which is equivalent to 150 grams/square meter. It is a popular choice for roofing because it is very durable and can be painted in other colors.
AZ50 aluminized zinc is a high quality corrosion resistant steel. It is made of a combination of aluminum and zinc, with an aluminum content of at least 50%. AZ50 aluminized zinc is not only suitable for the exterior of your house, but also for structural purposes and industrial applications. This alloy has many advantages, including excellent strength, impact resistance and excellent weldability.
Product Parameters
|
Product Name |
DC52D+AZ50 Galvalume Steel Sheet |
|
Thickness |
0.12mm-6.00mm |
|
Width |
600mm-1500mm |
|
Length |
1m-12m, Support Customization |
|
Standard |
AISI, ASTM, DIN, JIS, GB, JIS, SUS, EN, etc. |
|
Thickness of Aluminum Zinc Coating |
30-185g/m² |
|
Content of Al-Zn Coating |
Al: 55%, Zn: 43.5%, Si: 1.5% |
Chemical Composition
|
Al |
Zn |
Si |
Fe |
Cu |
Cd |
Pb |
Sn |
Ni |
Close Cr |
|
55-58 |
41-43 |
1.5-2 |
0.25 |
0.03 |
0.05 |
0.01 |
0.05 |
0.05 |
0.05 |
Mechanical Properties
|
Grade |
Yield Strength MPa≥ |
Tensile Strength MPa≥ |
Elongation A%≥ |
|
DX51D Z/ZM/AZ/AM |
240-380 |
270-500 |
22 |
|
DX52D Z/ZM/AZ/AM |
140-300 |
270-420 |
26 |
|
DX53D Z/ZM/AZ/AM |
140-260 |
270-380 |
30 |
|
DX54D Z/ZM/AZ/AM |
120-220 |
260-350 |
36 |
|
S220GD Z/ZM/AM |
220 |
300 |
20 |
|
S250GD Z/ZM/AZ/AM |
250 |
330 |
19 |
|
S280GD Z/ZM/AM |
280 |
360 |
18 |
|
S300GD A/AM |
300 |
380 |
18 |
|
S320GD Z/ZM/AM |
320 |
390 |
17 |
|
S350GD Z/ZM/AZ/AM |
350 |
420 |
16 |
|
S450GD A/AM |
450 |
480 |
15 |
|
S550GD Z/ZM/AZ/AM |
550 |
550 |
- |
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Scope of Application
Construction industry: such as roof, internal and external wall panels, sound insulation walls, pipes, garages, etc.
Automotive industry: such as mufflers, exhaust pipes, wiper accessories, fuel tanks, truck containers, etc.
Household appliances: such as refrigerator backplane, air conditioner, microwave oven, LED backlight, electric cabinet, etc
Agricultural use: such as greenhouse, granary, pig farm, chicken coop, etc
Other industries: such as heat exchangers, dryers, etc.
FAQ
1. What is the difference between GL and GI steel?
GL (Galvalume) uses an Al-Zn alloy coating, while GI (Galvanized) uses a pure zinc coating. GL has better heat reflectivity and long-term corrosion resistance; GI is often more cost-effective for short-term projects.
2. Is Galvalume steel fireproof?
Yes, Galvalume is a non-combustible material. It typically has a Class A fire rating, making it one of the safest options for roofing and siding.
3. Can I paint Galvalume steel?
Yes. While Galvalume can be used in its "bare" metallic state, it is often pre-painted (color-coated) at the factory. If painting on-site, specific primers for Al-Zn coatings must be used.
4. What are the common applications of Galvalume?
It is primarily used for metal roofing, wall panels, grain silos, automotive parts, and household appliances (like ovens and refrigerators) due to its heat resistance.
5. Does Galvalume reflect heat?
Yes, Galvalume has high solar reflectivity. It reflects a significant amount of solar radiation, which helps keep buildings cooler and reduces energy costs in the summer.
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