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High-Performance Alloyed Aluminum-Silicon Coated Steel from China Suppliers and Factory for Industrial Applications
Product Features
- 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.
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 | — | 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
Frequently Asked Questions (FAQ)
What is the chemical composition of the coating?
The coating features a standard nominal ratio of 90 wt.% Aluminium and 10 wt.% Silicon, with a total double-side coating weight of 120 g/m² and low zinc impurity (≤0.05 wt.%).
What is the maximum operating temperature this product can withstand?
It offers stable long-term service up to 600℃ and can withstand short peak temperature exposure up to 650℃ for a maximum of 2 hours without cracking or peeling.
Is direct welding possible without pre-stripping the coating?
Yes, direct welding is achievable without full pre-stripping. It is compatible with mainstream welding methods while minimising spatter, defects, and electrode abrasion.
How does the coating behave during deep drawing and stamping?
The steel forms a strong metallurgical bond (Fe-Al-Si alloy interlayer) with the substrate, delivering outstanding drawability. The coating passes 0T tight T-bend tests and Grade 0 cross-cut adhesion tests without peeling.
Which international standard equivalents does this material conform to?
This product aligns with multiple global standards, including KS D3544 (SA1E), JIS G3314 (SA1E), ASTM A463 (DDQ-EDDQ), DIN EN 10346 (DX54D-DX56D), and GB/T 18592 (DX54D-DX56D).
What are the main application areas for this coated steel?
Main applications include the Automotive Industry, Household Appliances & Kitchen Equipment, Industrial Heating & HVAC Systems, New Energy & Thermal Power, and Construction & Fire Protection equipment.