Keluli Bersalut Al-Si
Al-Si Coated Steel combines the strength of carbon steel with the protective advantages of an aluminum-silicon coating. Its excellent heat resistance, rintangan pengoksidaan, perlindungan kakisan, and thermal reflectivity make it an ideal material for automotive exhaust systems, peralatan pemanasan industri, Sistem HVAC, construction products, and energy applications. These performance benefits help improve durability, reduce maintenance costs, and extend component service life.
- Penerangan
Penerangan
Al-Si Coated Steel is a carbon steel product protected by a hot-dip aluminum-silicon coating. The coating typically contains approximately 90% aluminium dan 10% silikon, providing excellent heat resistance, rintangan pengoksidaan, dan perlindungan kakisan. Because of these advantages, it is widely used in automotive, perindustrian, pembinaan, and energy-related applications.
Typical Coating Composition
| unsur | kandungan (%) |
|---|---|
| aluminium (Al) | 89–95 |
| Silikon (Dan) | 5–11 |
| besi (Fe) | Baki |
The aluminum layer forms a protective oxide film, while silicon improves coating adhesion and controls the growth of the intermetallic layer between the coating and steel substrate.
Ciri-ciri Prestasi Utama
Rintangan Haba Cemerlang
One of the most important advantages of Al-Si coated steel is its ability to maintain performance at elevated temperatures. The aluminum-rich coating resists scaling and oxidation much better than conventional carbon steel.
Outstanding Oxidation Resistance
When exposed to heat and air, the surface develops a dense aluminum oxide layer that slows oxidation and extends service life in demanding environments.
Perlindungan Kakisan Unggul
The coating acts as a barrier against moisture and corrosive atmospheres. Compared with uncoated steel, service life can be significantly increased in outdoor and industrial environments.
Pemantulan Terma Tinggi
The bright metallic surface reflects radiant heat efficiently, making the material suitable for thermal management applications.
Kebolehbentukan yang baik
The material can be stamped, bengkok, rolled, and fabricated while maintaining coating integrity. This allows manufacturers to produce complex parts without sacrificing protection.
Performance Benefits in Different Applications
| Performance Requirement | Benefit of Al-Si Coating |
| High Temperature Exposure | Rintangan pengoksidaan yang sangat baik |
| Humid Environment | Improved corrosion protection |
| Penebat Terma | Pemantulan haba yang tinggi |
| Complex Forming | Good ductility and adhesion |
| Hayat Perkhidmatan yang Panjang | Reduced maintenance requirements |
Aplikasi Utama
Industri automotif
The automotive sector is one of the largest users of Al-Si coated steel because many components operate under high-temperature conditions.
Aplikasi biasa termasuk:
- Paip ekzos
- Muffler
- Cangkerang penukar pemangkin
- Perisai haba
- Engine compartment components
Peralatan Pemanasan Industri
Industrial systems require materials capable of resisting heat and oxidation over long periods.
Aplikasi biasa termasuk:
- Industrial furnaces
- Drying equipment
- Penukar haba
- Combustion chambers
- Peralatan pemprosesan haba
Sistem HVAC
The material’s corrosion resistance and heat-reflective properties make it suitable for heating and ventilation equipment.
Permohonan termasuk:
- Saluran pengudaraan
- Heating units
- Air distribution systems
- Industrial exhaust systems
Construction Industry
In building applications, the coating helps improve durability and weather resistance.
Common uses include:
- Panel bumbung
- Wall cladding
- Structural covers
- Equipment enclosures
Energy and Environmental Equipment
Many energy-related systems operate under elevated temperatures and corrosive conditions.
Examples include:
- Biomass heating equipment
- Solar thermal components
- Power generation systems
- Emission control equipment
Comparison with Conventional Carbon Steel
| Harta benda | Keluli Bersalut Al-Si | Keluli Karbon |
| Rintangan Kakisan | Cemerlang | rendah |
| Rintangan Haba | Cemerlang | Sederhana |
| Rintangan Pengoksidaan | Cemerlang | rendah |
| Pemantulan Terma | tinggi | rendah |
| Hayat perkhidmatan | Panjang | Lebih pendek |
| Maintenance Requirement | Lebih rendah | Lebih tinggi |













