



Hot-dip aluminum coated steel coil integrates the strength and durability of cold-rolled steel with the excellent corrosion protection, heat resistance, and reflective performance of aluminum, providing long-lasting protection and stable performance in demanding environments.
1.Material: ASTM A463, SA1C,SA1D,SA1E,DX54D, DX56D, etc.
2.Thickness: 0.25-0.8mm
3.Width: from 800mm to 1250mm, all available
4.Coil Weight: from 3-8MT, according to the customer's request
5.AS coating: 12-25μm
6.Post-treatment type:Oiled, Non treatment
7.Technology: Hot Dipped
8.Coating Layers of hot dip aluminium coated steel:
Excellent Heat Resistance
20 Gauge Aluminized Sheet Metal offers outstanding stability under high-temperature conditions. Even after continuous exposure to temperatures up to 450°C, the aluminum coating remains intact with minimal surface changes, maintaining its original brightness and appearance better than conventional galvanized steel coil and cold-rolled steel coil.
High Heat Reflectivity
The smooth aluminum surface of Aluminium Coated Steel provides excellent thermal reflection performance. It can reflect approximately 80% of radiant heat at 450°C and achieve up to 95% infrared reflection efficiency, making it widely used in heat shields, ovens, toasters, gas appliances, and heating equipment.
Superior Corrosion Protection
Compared with many common metals, aluminum has stronger oxidation resistance. The stable aluminum oxide layer formed on the surface acts as a protective barrier, giving Aluminium Coated Steel better corrosion resistance and weather durability than traditional galvanized steel in many harsh environments.
Eco-Friendly and Recyclable Material
20 Gauge Aluminized Sheet Metal is an environmentally responsible material that contains no harmful substances. The aluminum coating and steel substrate can be fully recycled, supporting sustainable manufacturing and green production requirements.
Excellent Fabrication Performance
Aluminized steel sheets can be processed using standard steel fabrication methods, including cutting, forming, bending, and other machining operations, providing flexibility for different industrial applications.
Reliable Welding Performance
Due to aluminum’s good electrical and thermal conductivity, Aluminium Coated Steel provides efficient heat dissipation during welding. The aluminum coating has a higher melting point than zinc coatings, helping reduce coating flow during welding and requiring lower welding current compared with galvanized steel.
Long-Lasting Surface Finish
With its bright metallic appearance and durable aluminum coating, 20 Gauge Aluminized Sheet Metal maintains an attractive surface finish while delivering enhanced resistance to corrosion, oxidation, and outdoor weather conditions.
Automotive Components
20 Gauge Aluminized Sheet Metal is commonly applied in automotive parts such as mufflers, exhaust pipes, and fuel tanks, where high-temperature resistance and corrosion protection are essential.
Appliance Manufacturing
With excellent heat reflectivity and durability, Aluminium Coated Steel is widely used in household and industrial appliances, including electric stoves, gas ranges, bread machines, toasters, frying pans, dryers, air conditioners, heat exchangers, stovepipes, boilers, gas ovens, and rice cookers.
Construction Applications
20 Gauge Aluminized Sheet Metal is suitable for building applications such as chemical plant walls, roofing systems, and fire-resistant wall structures, offering long-lasting performance in demanding environments.
1. Why is 20 Gauge Aluminized Sheet Metal used for automotive components?
20 Gauge Aluminized Sheet Metal is widely used in automotive applications because it combines the strength of steel with the excellent heat resistance and corrosion protection of aluminum coating. It performs reliably in high-temperature environments such as exhaust systems, mufflers, and fuel tanks.
2. What automotive parts can be made from Aluminium Coated Steel?
Aluminium Coated Steel is commonly used for manufacturing automotive components including mufflers, exhaust pipes, fuel tanks, heat shields, and other parts that require long-term durability, oxidation resistance, and protection against high temperatures.
3. Does aluminized steel provide better corrosion resistance than ordinary steel for vehicles?
Yes. The aluminum coating on aluminized steel forms a stable oxide layer that helps prevent rust and surface corrosion. This makes 20 Gauge Aluminized Sheet Metal a durable choice for automotive parts exposed to heat, moisture, and harsh operating conditions.
As China metal materials industry leading enterprises, the national steel trade and logistics "Hundred good faith enterprise",China steel trade enterprises, "Top 100 private enterprises in Shanghai”. Shanghai Zhanzhi industry Group Co., Ltd.,(shorted to Zhanzhi Group) takes the" Integrity, Practicality, Innovation, Win-Win " as its sole operation principle, always persist in putting the customer demand in the first place.


