Jenis keluli aluminized 2
Jenis keluli aluminized 2 is designed primarily for corrosion protection rather than extreme heat resistance. Its nearly pure aluminum coating offers excellent weatherability, long service life, and strong resistance to atmospheric corrosion. These characteristics make it an ideal choice for construction, agricultural, and industrial applications requiring durable and low-maintenance steel products.
- Penerangan
Penerangan
Jenis keluli aluminized 2 is a carbon steel product coated with commercially pure aluminum through a hot-dip process. Unlike Type 1, which contains an aluminum-silicon alloy coating, this grade uses nearly pure aluminum to provide superior atmospheric corrosion resistance. It is widely used in construction, storage equipment, agricultural facilities, and outdoor structures where long-term durability is required.
Komposisi Salutan
The coating of Aluminized Steel Type 2 mainly consists of aluminum with minimal alloying elements.
| unsur | Kandungan Biasa (%) |
|---|---|
| aluminium (Al) | ≥99 |
| Silikon (Dan) | Jejak |
| besi (Fe) | Small amount from diffusion layer |
The high-purity aluminum coating forms a dense oxide film on the surface, protecting the steel substrate from corrosion and weather exposure.
Sifat Mekanikal
Mechanical properties are determined primarily by the base steel rather than the aluminum coating.
| Harta benda | Nilai Biasa |
| Kekuatan Tegangan | 270–450 MPa |
| Kekuatan Hasil | 140–300 MPa |
| Pemanjangan | 20–40% |
| Kekerasan | 55–85 HRB |
The material maintains good formability and can be processed through bending, roll forming, mengecap, dan kimpalan.
Ciri-ciri Prestasi Utama
Rintangan Kakisan yang Luar Biasa
The pure aluminum coating provides excellent protection against moisture, pengoksidaan, and industrial atmospheres. This makes the material suitable for outdoor applications and environments exposed to humidity.
Hayat Perkhidmatan yang Panjang
A stable aluminum oxide layer continuously protects the surface from further corrosion, helping extend the lifespan of structures and fabricated components.
Good Weather Resistance
The coating performs well under long-term exposure to rain, sunlight, and temperature fluctuations. It maintains surface integrity better than ordinary carbon steel.
Excellent Heat Reflectivity
Permukaan aluminium yang terang memantulkan haba sinaran dengan cekap, helping reduce heat absorption in buildings and industrial equipment.
Aplikasi Biasa
Jenis keluli aluminized 2 biasa digunakan dalam:
- Roofing and wall panels
- Grain silos and storage tanks
- Agricultural buildings
- peralatan HVAC
- Sistem pengudaraan industri
- Kabinet elektrik
- Outdoor enclosures
- Construction components
- Solar equipment supports
- Corrosion-resistant structural parts
taip 1 vs. taip 2 Perbandingan
| Harta benda | taip 1 | taip 2 |
| Salutan | Aluminum-Silicon Alloy | Aluminium tulen |
| Rintangan Haba | Cemerlang | Baik |
| Rintangan Kakisan | Very Good | Cemerlang |
| Rintangan Pengoksidaan | Cemerlang | Very Good |
| Exhaust System Use | Biasa | Jarang |
| Building Applications | Terhad | Biasa |
