Aluminized Silicon Steel Coil (AS) – Heavy Coating High-Temperature Grade
Product Overview
Heavy-coating aluminized silicon steel (AS) is an industrial-grade high-temperature corrosion material designed for prolonged service in severe thermal and corrosive industrial environments. This AS300 DX53D grade features an ultra-thick Al-Si alloy layer that provides 2–3 times longer service life than standard AS120 in the same environment. It is the preferred cost-saving alternative to stainless steel for many high-temperature industrial applications.
Why Choose CNB Heavy-Coating AS Steel?
As one of the few Chinese manufacturers capable of mass-producing heavy-coating aluminized steel up to AS400, CNB uses optimized hot-dip process parameters to ensure thick, uniform alloy layers with consistent intermetallic bonding. Our heavy AS products undergo extended high-temperature aging and thermal cycling tests to verify coating stability and oxidation resistance, ensuring reliable long-term performance in demanding industrial environments.
Key Specifications
| Item | Specification |
|---|---|
| Product Name | Heavy Coating Type 1 Aluminized Steel Coil (AS) |
| Thickness Range | 0.8mm – 3.0mm |
| Standard Widths | 1000mm, 1200mm, 1250mm, 1500mm, 1600mm |
| Coating Mass | AS300 (300g/m², double side, Type 1 Al-Si alloy) |
| Steel Grade | DX53D |
| Coil Inner Diameter | 508mm / 610mm |
| Coil Weight | 6MT – 12MT per coil |
| Surface Finish | Bright annealed surface |
| Applicable Standards | ASTM A463, EN 10217, JIS G3314 |
| Peak Temperature Resistance | Up to 650°C |
Core Advantages
- Ultra-long high-temperature life: Thick alloy layer extends service life 2–3 times vs. standard AS120 in continuous high-heat service.
- Outstanding oxidation resistance: Dense alumina layer blocks oxidative gases and corrosive fumes even at 600°C+.
- Good fabrication performance: DX53D base supports bending, flanging and moderate forming for industrial duct and furnace work.
- Dramatic cost savings: Delivers comparable high-temperature performance at a fraction of stainless steel pricing.
Applications
This heavy-coating AS grade is widely used in industrial furnace linings, heat exchanger shells, boiler components, high-temperature ductwork, flue gas stacks, waste incinerator linings, kiln interiors and heavy-duty industrial exhaust systems.
Order Information
We supply heavy AS coatings from AS200 up to AS400 to match different temperature and corrosion severity levels. Custom sizes and forming grades can be engineered for your specific industrial application. Contact our industrial materials team for a detailed performance evaluation and quotation.
