Type en acier aluminisé 2
Type en acier aluminisé 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.
- Description
Description
Type en acier aluminisé 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.
Composition du revêtement
The coating of Aluminized Steel Type 2 mainly consists of aluminum with minimal alloying elements.
| Élément | Contenu typique (%) |
|---|---|
| Aluminium (Al) | ≥99 |
| Silicium (Et) | Tracer |
| Fer (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.
Propriétés mécaniques
Mechanical properties are determined primarily by the base steel rather than the aluminum coating.
| Propriété | Valeur typique |
| Résistance à la traction | 270–450 MPa |
| Limite d'élasticité | 140–300 MPa |
| Élongation | 20–40% |
| Dureté | 55–85 HRB |
The material maintains good formability and can be processed through bending, roll forming, estampillage, et soudure.
Caractéristiques de performance clés
Résistance exceptionnelle à la corrosion
The pure aluminum coating provides excellent protection against moisture, oxydation, and industrial atmospheres. This makes the material suitable for outdoor applications and environments exposed to humidity.
Longue durée de vie
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.
Applications typiques
Type en acier aluminisé 2 is commonly used in:
- Roofing and wall panels
- Grain silos and storage tanks
- Agricultural buildings
- Équipement CVC
- Systèmes de ventilation industrielle
- Armoires électriques
- Outdoor enclosures
- Construction components
- Solar equipment supports
- Corrosion-resistant structural parts
Taper 1 vs. Taper 2 Comparaison
| Propriété | Taper 1 | Taper 2 |
| Revêtement | Aluminum-Silicon Alloy | Aluminium pur |
| Résistance à la chaleur | Excellent | Bien |
| Résistance à la corrosion | Very Good | Excellent |
| Résistance à l'oxydation | Excellent | Very Good |
| Exhaust System Use | Commun | Rare |
| Building Applications | Limité | Commun |
