En 10346 Aluminum Silicon Coated Steel
- Description
Description
EN 10346 aluminum silicon coated steel is the European standard specification for continuously hot-dip coated steel flat products, including aluminium-silicon (AS) coated steel coils. It defines the coating designation, steel grade system, mechanical requirements, surface quality, and delivery conditions for applications requiring heat resistance, oxidation protection, and corrosion resistance.
For European engineering projects, automotive supply chains, and industrial equipment manufacturing, understanding the EN 10346 +AS designation system is essential for selecting the correct grade, coating class, and certification documents. :contentReference[oaicite:0]{index=0}
What Is EN 10346 Aluminum Silicon Coated Steel?
EN 10346 covers continuously hot-dip coated steel flat products. The standard includes several metallic coating types, and AS represents the aluminium-silicon coating system used for high-temperature applications. :contentReference[oaicite:1]{index=1}
The AS coating is typically composed of an aluminium-rich layer with silicon added to improve coating adhesion and stability during forming and heat exposure. This coating system is widely used for exhaust components, heat shields, industrial ovens, furnaces, and thermal protection parts. :contentReference[oaicite:2]{index=2}
| Item | EN 10346 Requirement |
|---|---|
| Product Type | Continuously hot-dip coated steel flat products |
| AS Meaning | Aluminium-silicon coating |
| Product Form | Coil, slit coil, cut-to-length sheet |
| Main Advantages | Heat resistance, oxidation resistance, coating durability |
EN 10346 +AS Grade Naming System Explained
The EN 10346 designation combines the steel grade, coating type, and surface quality. A typical specification may appear as:
EN 10346 DX51D+AS150+AB
| Symbol | Meaning |
|---|---|
| DX | Cold forming steel grade family |
| 51-57 | Formability level classification |
| D | Hot-dip coated flat steel designation |
| +AS | Aluminium-silicon coating |
| 150 | Nominal coating mass class |
| A/B/C | Surface quality level |
DX51D to DX57D: EN 10346 Formability Grades
The DX series represents increasing cold-forming capability. Higher numbers indicate improved drawing performance for more complex forming operations. :contentReference[oaicite:3]{index=3}
| Grade | Forming Level | Typical Application |
|---|---|---|
| DX51D+AS | Bending and profiling quality | General fabricated parts |
| DX52D+AS | Drawing quality | Moderate forming components |
| DX53D+AS | Deep drawing | Complex formed parts |
| DX54D+AS | Special deep drawing | High deformation parts |
| DX56D+AS | Extra deep drawing | Automotive complex components |
| DX57D+AS | Highest forming capability | Advanced deep-drawing applications |
AS Coating Classes in EN 10346
The AS coating classification is based on coating mass, normally expressed as total coating weight on both surfaces. A higher coating class provides a thicker protective layer for more demanding environments. :contentReference[oaicite:4]{index=4}
| Coating Class | Coating Weight | Approximate Thickness Per Side |
|---|---|---|
| AS60 | 60 g/m² | About 10 μm |
| AS120 | 120 g/m² | About 20 μm |
| AS150 | 150 g/m² | About 25 μm |
| AS200 | 200 g/m² | About 33 μm |
EN 10346 AS vs ASTM A463 vs JIS G3314 Comparison
Different regions use different standards for aluminium coated steel. Correct comparison requires checking coating composition, grade classification, and certification requirements.
| Standard System | Coating Grade | Typical Classification |
|---|---|---|
| EN 10346 | AS | DX51D+AS to DX57D+AS |
| ASTM A463 | Aluminium-silicon coating | Type 1 |
| JIS G3314 | Aluminium coating | SA1C / SA1D |
EN 10346 Certification Requirements
European buyers usually require documentation confirming material compliance, especially for automotive, construction, and industrial projects.
• EN 10346 compliance certificate
• EN 10204 3.1 inspection certificate
• Chemical composition report
• Mechanical property test results
• Coating weight verification
Teda Ganghua EN 10346 Aluminum Silicon Coated Steel Supply
Teda Ganghua provides specification-based aluminium silicon coated steel solutions for international customers requiring EN standard compliance, coating selection support, and customized processing services. For projects requiring reliable aluminized steel coil, technical assistance is available for grade confirmation and application matching.
FAQ About EN 10346 Aluminum Silicon Coated Steel
1. What does +AS mean in EN 10346?
+AS indicates an aluminium-silicon coating applied by continuous hot-dip coating.
2. What is the difference between DX51D+AS and DX56D+AS?
DX51D+AS is designed for general forming, while DX56D+AS provides much higher deep-drawing capability.
3. Which AS coating class is commonly used?
AS150 is widely selected for applications requiring balanced heat resistance and coating durability.
4. Does EN 10346 require inspection certificates?
Many European industrial projects require EN 10204 3.1 certificates to verify chemical, mechanical, and coating requirements.
5. Where is EN 10346 AS coated steel used?
Typical applications include exhaust systems, heat shields, ovens, furnaces, and industrial thermal equipment.
