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DX54D+AS
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DX54D+AS is a deep-drawing grade aluminized steel specified under the EN 10346 standard. The material consists of a low-carbon steel substrate coated with an aluminum-silicon (AS) alloy layer through a hot-dip coating process. It is widely used in automotive exhaust systems, heat shields, industrial heating equipment, and applications requiring excellent formability and heat resistance.
What Does DX54D+AS Mean?
| Symbol | Description |
|---|---|
| DX | Flat steel product for cold forming |
| 54 | Extra deep drawing grade |
| D | Drawing quality steel |
| +AS | Aluminum-Silicon coated steel |
Compared with DX51D+AS and DX52D+AS, DX54D+AS offers superior deep-drawing performance and is suitable for more complex forming operations.
Chemical Characteristics
The substrate is ultra-low carbon steel, while the coating typically contains:
| Element | Typical Content |
| Aluminum (Al) | 89–95% |
| Silicon (Si) | 5–11% |
| Carbon (C) | Low-carbon substrate |
| Iron (Fe) | Balance |
The silicon addition improves coating adhesion and high-temperature oxidation resistance.
Mechanical Properties
| Property | Typical Value |
| Yield Strength | 120–260 MPa |
| Tensile Strength | 270–400 MPa |
| Elongation | ≥ 36% |
| Formability | Excellent |
| Deep Drawing Performance | Outstanding |
The high elongation makes DX54D+AS suitable for components requiring severe deformation without cracking.
Key Performance Advantages
Excellent Deep Drawing Capability
DX54D+AS is specifically designed for:
- Complex stamping
- Deep drawing
- Multi-stage forming
- Automotive component manufacturing
The material maintains good surface quality even after extensive deformation.
Outstanding Heat Resistance
The aluminum-silicon coating forms a stable oxide layer that provides:
- Excellent oxidation resistance
- High-temperature durability
- Long service life in thermal environments
This makes the material suitable for exhaust and heating applications.
Corrosion Resistance
Compared with ordinary cold-rolled steel, DX54D+AS offers:
- Better atmospheric corrosion resistance
- Improved moisture resistance
- Longer outdoor service life
The aluminum coating acts as a protective barrier against environmental exposure.
Good Weldability
DX54D+AS can be processed using common welding methods, including:
- Resistance welding
- MIG welding
- TIG welding
- Spot welding
Proper welding parameters help maintain coating performance near welded areas.
Common Coating Weights
| Coating Grade | Coating Weight |
| AS060 | 60 g/m² |
| AS080 | 80 g/m² |
| AS100 | 100 g/m² |
| AS120 | 120 g/m² |
| AS150 | 150 g/m² |
Higher coating weights generally provide improved corrosion resistance.
Common Dimensions
| Item | Range |
| Thickness | 0.40–3.00 mm |
| Width | 600–1500 mm |
| Coil Weight | 3–25 Tons |
| Sheet Length | Custom Cut-to-Length |
Typical Applications
- Automotive exhaust systems
- Muffler shells
- Catalytic converter housings
- Heat shields
- Industrial furnace components
- Heating and ventilation equipment
- Chimney systems
- Thermal processing equipment
DX54D+AS vs DX51D+AS
| Property | DX54D+AS | DX51D+AS |
| Formability | Excellent | Good |
| Deep Drawing Capability | Outstanding | Standard |
| Elongation | Higher | Lower |
| Complex Stamping Parts | Recommended | Suitable |
| Automotive Components | Excellent | Good |
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