Tipo de aço aluminizado 2
Tipo de aço aluminizado 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.
- Descrição
Descrição
Tipo de aço aluminizado 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.
Composição do Revestimento
The coating of Aluminized Steel Type 2 mainly consists of aluminum with minimal alloying elements.
| Elemento | Conteúdo típico (%) |
|---|---|
| Alumínio (Al) | ≥99 |
| Silício (E) | Rastreamento |
| Ferro (Fé) | 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.
Propriedades Mecânicas
Mechanical properties are determined primarily by the base steel rather than the aluminum coating.
| Propriedade | Valor típico |
| Resistência à tracção | 270–450 MPa |
| Força de rendimento | 140–300 MPa |
| Alongamento | 20–40% |
| Dureza | 55–85 HRB |
The material maintains good formability and can be processed through bending, roll forming, estampagem, e soldagem.
Principais características de desempenho
Excelente resistência à corrosão
The pure aluminum coating provides excellent protection against moisture, oxidação, and industrial atmospheres. This makes the material suitable for outdoor applications and environments exposed to humidity.
Longa vida útil
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.
Aplicações Típicas
Tipo de aço aluminizado 2 é comumente usado em:
- Roofing and wall panels
- Grain silos and storage tanks
- Agricultural buildings
- Equipamento HVAC
- Sistemas de ventilação industrial
- Armários elétricos
- Outdoor enclosures
- Construction components
- Solar equipment supports
- Corrosion-resistant structural parts
Tipo 1 vs. Tipo 2 Comparação
| Propriedade | Tipo 1 | Tipo 2 |
| Revestimento | Aluminum-Silicon Alloy | Alumínio puro |
| Resistência ao Calor | Excelente | Bom |
| Resistência à corrosão | Very Good | Excelente |
| Resistência à oxidação | Excelente | Very Good |
| Exhaust System Use | Comum | Cru |
| Building Applications | Limitado | Comum |
