Jenis keluli aluminized 1
Jenis keluli aluminized 1 combines the strength of carbon steel with the heat resistance and corrosion protection of an aluminum-silicon coating. Its excellent oxidation resistance, thermal reflectivity, and formability make it a preferred material for high-temperature applications where long service life and reliable performance are required.
- Penerangan
Penerangan
Jenis keluli aluminized 1 is a carbon steel product coated with an aluminum-silicon alloy through a hot-dip process. The coating typically contains aluminum with approximately 5–11% silicon, which improves coating adhesion and enhances resistance to oxidation at elevated temperatures. This material is widely used in automotive exhaust systems, peralatan pemanasan industri, and heat-resistant components.
Chemical Composition of the Coating
The coating composition plays a critical role in the performance of this material.
| unsur | Kandungan Biasa (%) |
|---|---|
| aluminium (Al) | 89–95 |
| Silikon (Dan) | 5–11 |
| besi (Fe) | Baki (from substrate interaction) |
The aluminum-rich coating forms a protective oxide layer on the surface, while silicon reduces brittleness and improves coating uniformity during production.
Sifat Mekanikal
The mechanical properties mainly depend on the steel substrate grade used beneath the coating.
| Harta benda | Nilai Biasa |
| Kekuatan Tegangan | 270–450 MPa |
| Kekuatan Hasil | 140–300 MPa |
| Pemanjangan | 20–38% |
| Kekerasan | 55–85 HRB |
These properties provide a good balance between formability, kekuatan, and durability for fabrication processes such as stamping, membongkok, dan kimpalan.
Ciri-ciri Prestasi Utama
Rintangan Haba Cemerlang
The aluminum-rich surface can withstand continuous exposure to elevated temperatures. The protective aluminum oxide film reduces scaling and oxidation, making the material suitable for high-temperature service environments.
Rintangan kakisan unggul
Berbanding dengan keluli karbon biasa, the aluminum-silicon coating provides significantly improved resistance to atmospheric corrosion. The coating acts as a barrier that protects the steel substrate from moisture and oxygen.
Kebolehbentukan yang baik
The coating remains strongly bonded to the steel surface during forming operations. Components can be rolled, bengkok, dicop, and fabricated without significant coating damage when proper processing methods are used.
Reflektif
The bright metallic surface reflects radiant heat effectively, which is beneficial for thermal shields, ketuhar, relau, and heat-management applications.
Aplikasi Biasa
Aplikasi biasa termasuk:
- Automotive exhaust pipes and mufflers
- Perisai haba
- Industrial furnaces
- Gas-fired appliances
- Heating and ventilation systems
- Peralatan pemprosesan haba
- Agricultural drying equipment
Perbandingan dengan Keluli Tergalvani
| Harta benda | Jenis keluli aluminized 1 | Keluli Tergalvani |
| Main Coating | Aluminum-Silicon | Zink |
| Rintangan Haba | Cemerlang | Sederhana |
| Rintangan Pengoksidaan | Cemerlang | Baik |
| Surface Reflectivity | tinggi | Sederhana |
| Perkhidmatan Suhu Tinggi | sesuai | Terhad |
| Rintangan Kakisan | Very Good | Very Good |
