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High-Performance Alloyed Aluminum-Silicon Coated Steel from China Suppliers and Factory for Industrial Applications
Product Features
⚙️ Characteristics
- Features a standard 90Al-10Si coating processed via dedicated thermal diffusion treatment. A continuous Fe-Al-Si alloy interlayer develops between the steel substrate and outer aluminium-rich coating, delivering consistent chemical composition and low impurity levels.
- Boasts excellent resistance to high-temperature oxidation and thermal cycling. It withstands prolonged high-temperature service and short peak temperature exposure without coating cracking, blistering or delamination.
- Forms strong metallurgical adhesion with the steel substrate, providing outstanding bending and deep drawability. The coating remains intact without peeling during complex stamping processes.
- Is compatible with all mainstream welding methods, minimising welding spatter, defects and electrode abrasion. Direct welding is achievable without full pre-stripping of the coating, ensuring consistent mechanical strength of welded joints.
- Exhibits excellent infrared radiation performance after prolonged high-temperature oxidationheating equipment components.
🎯 Use
- Automotive Industry
- Household Appliance & Kitchen Equipment
- Industrial Heating & HVAC Equipment
- New Energy & Thermal Power Equipment
- Construction & Fire Protection
Product Structure
Standard and Coating Weight Comparison
| Classification | KS D3544 | JIS G3314 | ASTM A463 | DIN EN 10346 | GB/T 18592 |
|---|---|---|---|---|---|
| Extra / Deep Drawing Quality | SA1E | SA1E | DDQ-EDDQ | DX54D-DX56D | DX54D-DX56D |
Minimum Coating Weight (Double Side)
| Coating Weight Symbol | KSD3544 | JISG3314 | ASTMA463 | DINEN10346 | GB/T18592 |
|---|---|---|---|---|---|
| 120 | 一 | 120 | T1-40(120) | AS 120 | AS 120 |
Technical Parameter
| Classification | Technical Parameter Description |
|---|---|
| Coating Composition | Nominal coating ratio: 90 wt.% aluminium, 10 wt.% silicon; regular total coating weight of 120 g/m² on both sides; zinc impurity ≤0.05 wt.% |
| Metallurgical Structure | Three-layer composite structure; the intermediate continuous Fe-Al-Si alloy interlayer is strictly controlled within 8–12 μm without discontinuity |
| High Temperature Resistance | Stable long-term service at 600℃; withstand short peak temperature of 650℃ for maximum 2 hours; oxidation mass gain ≤0.35 mg/cm² after 1000-hour isothermal test at 600℃ |
| Formability & Adhesion | Critical scratch delamination load ≥18 N; no coating peeling after 0T tight T-bend test; Grade 0 in ISO 2409 cross-cut adhesion test |
| Infrared Optical Property | Total normal emissivity ranges from 0.78 to 0.86 after high-temperature oxidation |
Application
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Frequently Asked Questions
What is the coating composition of this aluminized steel?
The coating features a nominal ratio of 90 wt.% aluminium and 10 wt.% silicon, offering a standard total coating weight of 120 g/m² on both sides with very low zinc impurities (≤0.05 wt.%).
How does the steel perform under high-temperature conditions?
It offers excellent resistance to thermal oxidation, maintaining stable performance during long-term service at 600℃ and withstanding peak temperatures up to 650℃ for up to 2 hours without cracking or peeling.
Can this aluminized steel be welded directly?
Yes, it is compatible with all mainstream welding methods. Direct welding is achievable without fully stripping the coating, resulting in minimal spatter and consistent mechanical strength.
What equivalent standards does this material conform to?
It complies with and corresponds to standard classifications including KS D3544 (SA1E), JIS G3314 (SA1E), ASTM A463 (DDQ-EDDQ), DIN EN 10346 (DX54D-DX56D), and GB/T 18592 (DX54D-DX56D).
What applications is this aluminized steel best suited for?
It is widely used in the automotive industry, household appliances, kitchen equipment, industrial heating, HVAC systems, new energy equipment, and construction fire protection.
How does the coating behave during complex forming processes?
Due to its strong metallurgical adhesion and controlled 8–12 μm Fe-Al-Si interlayer, the coating remains fully intact without delamination or peeling, even during tight 0T T-bend and deep drawing operations.