Your Professional Galvalume Sheet Supplier
Qingdao Heyan Steel Structure Co., Ltd., ("HEYAN STEEL" for short )specializes in supplying coated and plated products, as well as a wide range of steel and non-ferrous metal materials.
Partners
Today, we collaborate with over 110 countries across Southeast Asia, South America, the Middle East, North America, and Europe. With growing international demand, Heyan Steel has earned global customer trust through its extensive production experience, robust expertise, and dependable after-sales support.
Our Production Lines
Based in Binzhou, we operate three production lines dedicated to coated and plated products. Additionally, we have invested in facilities for seamless steel pipes, stainless steel, aluminum profiles, and other items.
Our Inventory Warehouses
We maintain inventory warehouses in various regions throughout China, ensuring we can promptly provide suitable products to meet customer requirements.
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![Hot Dipped Galvalume Sheet]()
Hot Dipped Galvalume SheetHot Dipped Galvalume Sheet is a highly corrosion-resistant material. It is made of cold-rolled steel and coated with a coating consisting of 55% aluminum, 43.3% zinc, and 1.6% silicon. Galvalume...view more -
![AZ50 Galvalume Sheet]()
AZ50 Galvalume SheetAZ50 Galvalume Sheet is composed of 55% aluminum, 43.4% zinc and 1.6% silicon solidified at a high temperature of 600℃. Its entire structure is composed of aluminum-iron-silicon-zinc, forming a...view more -
![AZ55 Galvalume Sheet]()
AZ55 Galvalume SheetAZ55 Galvalume Sheet is a zinc aluminum alloy coating. The resulting coating has excellent corrosion resistance and can be used in harsh environments.view more -
![AZ150 Galvalume Sheet]()
AZ150 Galvalume SheetAZ150 Galvalume Sheet is a highly corrosion-resistant material. It is made of cold-rolled steel and coated with a coating consisting of 55% aluminum, 43.3% zinc, and 1.6% silicon. It is also known...view more -
![High Zinc Coating Aluminum Zinc Sheet]()
High Zinc Coating Aluminum Zinc SheetHigh Zinc Coating Aluminum Zinc Sheet is a highly corrosion resistant material. It is made from cold rolled steel and coated with a coating consisting of 55% aluminum, 43.3% zinc, and 1.6%...view more
Galvalume steel is a kind of metal obtained through the hot-dipping process at a high temperature of 600 ° C. It is with a cold-rolled steel sheet as the substrate and then be applied a layer of Al-Zn coating on the surface. The coating consists of 55% aluminum, 43.4% zinc, 1.6% silicon, and a few trace elements. This unique Al-Zn alloy combines the protection and high durability of aluminum with the electrochemical protection of zinc. So GL steel features superior corrosion resistance. In addition, the surface is smooth, bright, silver-gray color, and with regular spangles, which can also meet the aesthetic purposes.
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+AZ/AM |
300 |
380 |
18 |
|
S320GD+Z/ZM/AM |
320 |
390 |
17 |
|
S350GD+Z/ZM/AZ/AM |
350 |
420 |
16 |
|
S450GD+AZ/AM |
450 |
480 |
15 |
|
S550GD+Z/ZM/AZ/AM |
550 |
550 |
Advantages of Galvalume Metal
Excellent Corrosion Resistance & Long Service Life
The corrosion resistance of galvalume coating is 3 times that of pure zinc coating due to the double protection of zinc and aluminum. When the zinc is worn away, the aluminum will form a dense layer of aluminum oxide, preventing further corroding of the base metal. So its service life is longer than that of galvanized steel. Here is a table showing the coating loss (um/y) per year in different use environments.
Attractive Appearance
Galvalume steel is silver-white in color. And it has a gorgeous finish and smooth surface. Compared to galvanized steel sheets, its spangles are more uniform. That’s why it is highly preferred as a building material or decorative panel.
Good Heat Resistance & Heat Reflectivity
This aluminum-zinc coating has good heat resistance. It can be used in high-temperature environments up to 315 degrees for a long time without discoloration. Besides, its heat reflectivity is almost twice that of galvanized steel, which is greater than 0.70. So it is an ideal choice for a roofing solution.
Some Particular Quality Norms of Galvalume Sheet
Galvalume steel sheets are subject to a variety of quality standards to guarantee that they meet specified performance and industry requirements. Some of the most often used quality criteria for Galvalume steel sheets include:
ASTM A792/A792M: The American Society for Testing and Materials (ASTM) produced this standard, which specifies the specifications for steel sheet coated with a 55% aluminum-zinc alloy using the hot-dip technique (Galvalume). It specifies parameters for coating weight, adhesion, mechanical qualities, and other important aspects.
EN 10346: This European standard defines the parameters for periodically hot-dip coated steel items (which are flat) used in cold forming. Part 3 of this standard describes the specific criteria for coating Galvalume steel sheets. It covers factors including coating mass, thickness, adherence, and surface quality.
JIS G3321: The JIS G3321 standard specifies hot-dip 55% aluminum-zinc alloy-coated steel sheets and coils, popularly known as galvalume. It establishes specifications for coating weight, adhesion, chemical composition, and mechanical qualities.
ISO 9364: This International Organization for Standardization (ISO) standard establishes rules for applying metallic and other inorganic coatings on steel. It covers numerous coating types, including Galvalume, and specifies coating thickness, adhesion, and surface conditions.
The Composition Of Galvalume Steel Typically Consists Of The Following Elements:
The base material of Galvalume steel is carbon steel, which provides the structural strength and formability.
Zinc is the primary component of the Galvalume coating. It serves as a sacrificial anode, providing cathodic protection to the steel substrate. In other words, the zinc corrodes in preference to the underlying steel, extending the lifespan of the steel.
Aluminum is alloyed with zinc to form a layer of aluminum-zinc alloy on the surface of the steel. This layer contributes to the corrosion resistance of the coating and also helps improve the adhesion of paint or other finishes.
Silicon is a minor component in Galvalume steel, and it is added to the coating to enhance the performance of the alloy layer, particularly in terms of its ability to adhere to the steel substrate.
Applications for Galvalume Sheet
Roofing: Galvalume steel is frequently used for roofing panels and sheets due to its superior corrosion resistance and long lifespan. It’s commonly used for residential, commercial, and industrial roofing systems.
Siding: The durability and aesthetic appeal of Galvalume make it a popular choice for exterior siding panels on buildings. It can be used for both residential and commercial structures.
Building Components: Galvalume sheet steel is used for various building components, such as gutters, downspouts, soffits, and fascia, due to its resistance to weather and corrosion.
Automotive Panels: Some automotive manufacturers use Galvalume-coated steel for automotive body panels, such as hoods, doors, and fenders, to improve corrosion resistance.
Appliances: Galvalume-coated steel is used in the production of appliances like refrigerators, ovens, and washing machines due to its durability and resistance to wear and tear.
HVAC Equipment: Galvalume sheet steel is used in heating, ventilation, and air conditioning (HVAC) equipment, including ductwork, due to its resistance to the elements.
Construction Accessories: It's also used for various construction accessories like metal flashings, ridge caps, and chimney caps.
Agricultural Buildings: Galvalume sheet steel is used in agricultural structures, such as barns and sheds, for its longevity and ability to withstand harsh weather conditions.
Solar Panel Frames: The corrosion resistance of Galvalume makes it suitable for solar panel frames that are exposed to outdoor elements.
Industrial Applications: Galvalume sheet steel is used in industrial applications, such as manufacturing facilities and warehouses, for roofing, siding, and structural components.
Cooling Towers: Due to its resistance to corrosive environments, Galvalume is used in cooling towers, where exposure to water and chemicals can be significant.
Metal Furniture: Galvalume-coated steel is utilized in outdoor metal furniture due to its ability to withstand exposure to the elements.
Packaging & Shipping
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FAQ
We're professional galvalume sheet manufacturers in China, specialized in providing high quality products with low price. We warmly welcome you to wholesale discount galvalume sheet from our factory. For pricelist, contact us now.
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