DX53D+AS120 is a premium hot-dip aluminized-silicon steel sheet conforming to DIN EN 10346 standard, seamlessly blending exceptional heat resistance, corrosion protection, and formability. As a top-tier choice for automotive exhaust systems, industrial furnaces, and outdoor equipment, it has become an indispensable material in high-demand industrial sectors.
Core Material Definition
DX53D: A deep-drawing low-carbon steel substrate with a yield strength of 140–260MPa, tensile strength of 270–380MPa, and elongation of ≥36%. It ensures crack-free performance during complex stamping, bending, and deep-drawing processes, meeting the strict forming requirements of precision components.
+AS120: A double-sided hot-dip aluminized-silicon (Al–Si) coating with a coating weight of 120g/m² per side. The coating’s unique composition (≈90% Al + 10% Si) forms a dense and stable aluminum oxide protective film, laying the foundation for its excellent high-temperature and corrosion resistance.
Key Performance Advantages
Superior High-Temperature Stability: Withstands long-term use at temperatures ranging from 400–650°C. Unlike ordinary galvanized steel (which fails above 200°C), DX53D+AS120 maintains minimal mechanical property degradation, making it ideal for heat-exposed components. Its high thermal reflectivity also reduces heat accumulation, extending equipment lifespan.
Ultimate Corrosion Protection: The dense Al–Si coating resists moisture, salt spray, and acid-alkali erosion. It outperforms galvanized steel in outdoor, chemical, and marine environments, ensuring durable performance for years even in harsh conditions.
Excellent Formability & Weldability: High elongation (≥36%) enables complex shaping without coating damage, while the coating’s good electrical and thermal conductivity ensures compatibility with various welding processes. The surface remains stable, free from peeling or discoloration during long-term use.
Main Application Scenarios
Automotive Industry: Core material for exhaust systems (manifolds, mufflers, tail pipes), catalytic converter housings, and heat exchangers. It meets the stringent heat resistance and lightweight requirements of modern vehicles.
Home Appliances & Kitchenware: Used for oven inner tanks, microwave oven components, gas stove panels, and water heater shells, ensuring heat efficiency, corrosion resistance, and easy cleaning.
Industrial Equipment: Ideal for boilers, incinerators, hot-air pipelines, chimneys, and heat exchangers, providing reliable protection in high-temperature industrial settings.
Construction & Outdoor Projects: Outdoor ventilation ducts, wall/roof cladding, and outdoor cabinets, offering superior weather resistance compared to conventional steel materials.
Specification & Selection Guide
Thickness & Width: Available in 0.4–3.0mm thickness and 800–1500mm width, with custom slitting, leveling, and stamping services.
Coating Options: AS80, AS120, and AS150 are available. AS120 strikes the perfect balance between protection and cost, making it the most widely used choice.
Global Standards: Complies with DIN EN 10346, JIS G3314, and ASTM A463, ensuring seamless integration into global supply chains.
Material Comparison (vs. Competitors)

Property DX53D+AS120 Hot-Dip Galvanized Steel Stainless Steel
Max Working Temp 400–650°C ≤200°C ≥800°C
Corrosion Resistance Excellent Good Superior
Formability Excellent Good Medium
Cost-Effectiveness High High Low

Procurement & Usage Tips
Coating Selection: Choose AS120 or higher for high-temperature and harsh corrosion environments; AS80 suffices for general indoor applications.
Processing Notes: Avoid scratching the coating during stamping and handling. Post-welding touch-up with aluminized-silicon paint enhances edge protection.
Storage Requirements: Store in a dry, ventilated area to prevent prolonged water exposure and contact with acidic/alkaline substances.
DX53D+AS120 delivers a unique combination of heat resistance, corrosion protection, and cost-effectiveness, making it the optimal solution for replacing traditional galvanized steel and stainless steel in high-demand applications.