Loại thép aluminized 2
Loại thép 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.
- Sự miêu tả
Sự miêu tả
Loại thép 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.
Thành phần lớp phủ
The coating of Aluminized Steel Type 2 mainly consists of aluminum with minimal alloying elements.
| Yếu tố | Nội dung tiêu biểu (%) |
|---|---|
| Nhôm (Al) | ≥99 |
| Silicon (Và) | Dấu vết |
| Sắt (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.
Tính chất cơ học
Mechanical properties are determined primarily by the base steel rather than the aluminum coating.
| Tài sản | Giá trị điển hình |
| Độ bền kéo | 270–450 MPa |
| Sức mạnh năng suất | 140–300 MPa |
| Độ giãn dài | 20–40% |
| độ cứng | 55–85 HRB |
The material maintains good formability and can be processed through bending, roll forming, dập, và hàn.
Đặc điểm hiệu suất chính
Khả năng chống ăn mòn vượt trội
The pure aluminum coating provides excellent protection against moisture, quá trình oxy hóa, and industrial atmospheres. This makes the material suitable for outdoor applications and environments exposed to humidity.
Tuổi thọ dài
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
The bright aluminum surface reflects radiant heat efficiently, helping reduce heat absorption in buildings and industrial equipment.
Ứng dụng điển hình
Loại thép aluminized 2 is commonly used in:
- Roofing and wall panels
- Grain silos and storage tanks
- Agricultural buildings
- thiết bị HVAC
- Hệ thống thông gió công nghiệp
- Tủ điện
- Outdoor enclosures
- Construction components
- Solar equipment supports
- Corrosion-resistant structural parts
Kiểu 1 vs. Kiểu 2 So sánh
| Tài sản | Kiểu 1 | Kiểu 2 |
| Lớp phủ | Aluminum-Silicon Alloy | Nhôm tinh khiết |
| Khả năng chịu nhiệt | Xuất sắc | Tốt |
| Chống ăn mòn | Rất tốt | Xuất sắc |
| Chống oxy hóa | Xuất sắc | Rất tốt |
| Exhaust System Use | Chung | Rare |
| Building Applications | Giới hạn | Chung |
