IBC (Tianjin) Industrial Co.,Ltd is one of the top Aluzinc/Galvalume steel coils suppliers in China. We are an experienced Manufacturing and trading company, which has served customers from 40+ countries, such as Canada, Turkey, Poland, Iran, Brazil, Ukraine, the Philippines, Malaysia, etc. Compared to famous galvanized steel coil manufacturers, IBC Group offers a more competitive price for the same quality products. Also, there are a variety of steel products to choose from.
Firstly, Let’s See What is Galvalume Steel Coil
The galvalume steel coil, also called aluzinc steel coil, is made by cold-rolled steel sheet as a substrate and solidified by 55% aluminum, 43.5% zinc and 1.5% silicon at 600 °C. Similar to galvanized steel, galvalume steel is produced by a hot-dip process. It combines the physical protection and high durability of aluminum and the electrochemical protection of zinc.
What is Galvalume Steel Coils?
The hot-dip galvalume steel sheet, a kind of cold-rolled steel coil with different strength and thickness specifications as the base metal pre-coated by hot-plating for Al-Zn coatings on both sides and has a mass percentage of about 55% 43.5% zinc, 1.5% Si. Combined with physical protection and integration of high durability and electrochemical protection features of Al and Zn to obtain the substrate metal’s strength and ductility but also corrosion resistance of the coating. It not only can protect the inner metal base from corrosion. But also the surface was highly decorative bright silver gray and the regular spangle and has a bumpy sense.
|Aluzinc Galvalume Steel Coils
|Chromate, oiled, dry or as required
|Aluzinc 40~ 150g/m2 or as required
|Cold rolled or hot rolled
|Construction, automobiles, hosehode appliances, agriculture, etc.
|DX51D+AZ, SGLCC, SGLCD
|AISI, ASTM, BS, DIN, GB, JIS, etc
|SGS, BV, ISO 9001
|T/T, L/C, at sight
|Standard seaworthy package or as required
|15 ~25 working days after payment or according to customer’s required
Aluzinc Galvalume Steel Coils VS. Galvanized Steel Coil
Because this Aluzinc layers coating has very good corrosion resistance ability which offers it 2-6 times the life span versus galvanized steel coils. Developed from hot dipped zinc galvanized and hot-dipped aluminum galvanization tech, galvalume steel combines with excellent characteristics of both products, premium corrosion and oxidation resistance of hot dipped aluminum galvanization and exceptional electrochemical properties of hot dipped zinc coated galvanization, which gives galvalume steel strong anti-rust and anti-corrosion ability at the edge and on the scratched surface.
The corrosion resistance property of the 55% aluminum zinc steel roll is from the aluminum layer barrier protection function. And the sacrificial protection function of zinc layer.
When the steel roll happens trimming, scratches and abrasions. The zinc will take the role of sacrificial coatings to protect the steel’s anti-corrosion. The aluminum will form an oxide insoluble protection barrier layer. Aluminum zinc alloy steel coil has been in a variety of different atmospheric environment. Carried out more than 20 years of outdoor exposure test. Confirmed that 55% galvanized steel roll trimming protection function is better than galvanized steel and 5% aluminum zinc steel.
In other words, the surface of galvalume steel sheet features a unique star-shape, smooth and plain, with silver color as primary colour. Its special plating structure could be well corrosive -proof. Then, let’s see what is the advantage of Aluzinc Galvalume Steel Coils.
Main Advantage of Galvalume Steel Coils
Firstly, It hsa more fluent and smoother surface and superior corrosion resistance property than hot dipped zinc galvanized steel coils.
Secondly, It’s excellent heat resistance durable ability and anti-oxidation performance.
It can bear temperature under 315℃ without tarnish and can apply normally under 500℃ for long period. They could reject erosion from water and mud.
Therefore, they are the ideal steel materials for water heating machines, food dehydrators, exhausted tubes, automobile mufflers. And its heat reflection ratio is more than 75% which is double of zinc coated galvanized steel. Heat resistance of the 55% aluminum-zinc alloy steel plate is better than that of the galvanized steel sheet. Similar to the high-temperature oxidation resistance of the aluminum plate.
Thirdly, excellent performance for coating and machinability.
It is highly adhesive to organic color pre painted coatings. And it welds and processed as the zinc galvanized steel metals. In another words, it could be cold bent and punching while getting beautiful outlooks. It is also cost savings as a smaller amount of base metal consuming for the same thickness. As aluminum is lighter than zinc density. It also usually gets PVDF resin to get superior chalk resistance and gloss retention as well as stain and chemical resistance. This PVDF (Poly Vinyl Irene Fluoride) is softer than polyester, making it highly formable without risk of cracking. This pretreatments and primers along with superior paint coating have increased product warranties dramatically.
In conclusion, its lifespan normally could reach 25 years. It is as well in heat-resistant as used in 315℃ high temperature; The plating and paint film with good adhesion would be excellent in processability including punching press, shearing, and welding, etc. And also it performs well in electro-conductivity.
Application of Galvalume Steel Coils
- Firstly, Architecture: Roofing, External Siding, Garage, Barrier, Shutter
- Secondly, Household Appliances: Oven, Explosion Proof Steel Strip, Air-Condition System Covering, Solar Heating, Electrical Unit
- Thirdly, Automobile: Mobile Muffler, Vent Pipe, Catalysis Converter Heat Shield, Bottom Accessories
- Finally, Industrial Instrument: Electric Controlled Cabinet, Industrial Refrigerator, Vending Machine.
Finally, along with using for roofing, marine, and other industrial applications. This coil is also able to use in many other ways as well. Because it adheres so well to paint and resists corrosion. It has in recent years been used in home electrical appliances and buildings, showcasing its versatility. Possessing an iron-zinc alloy layer that makes it highly workable. It can be used in appliances that are smaller and smaller. Because of this, viewed by many within mechanical engineering as an all-purpose material.
Contact with IBC Metal Group