Galvalume steel (aluzinc) DX51D + AZ100, cold-rolled and hot-dip galvanized steel, is typically sold in coils, sheets, and strips in accordance with EN 10346. Wanzhi Group offers further processing services, including bending, slitting, forming, and stamping. Product forms include AZ100 galvanized roofing sheets, wall panels, appliance panels, and steel structures.
DX51D
DX51D +AZ100 Galvalume steel (DX51D) is a cold-rolled, coated steel grade specified in the European standard (EN 10346). It offers excellent formability for galvalume steel.
Code
“D” indicates cold-forming steel (drawing, deep-drawing grade);
“X” indicates the base steel is mild steel.
“51D” is designed specifically for cold forming (such as deep drawing and stretching) and offers excellent ductility and formability.
Chemical Composition
| Chemical Composition | Description |
| Carbon (C) | ≤0.12% |
| Manganese (Mn) | ≤0.6% |
| Phosphorus (P) | ≤0.1% |
| Other Elements | Low content to ensure good formability |
Property
| Property | Value |
| Yield Strength | 140~280MPa |
| Tensile Strength | 270~410MPa |
| Elongation | ≥30% |
AZ100
The AZ100 aluminum-zinc coating in the DX51D +AZ100 provides exceptional corrosion resistance to steel. The thicker the coating, the better the corrosion resistance.
- +AZ: Aluzinc, a galvanized steel with a composition of 55% aluminum (Al), 43.4% zinc (Zn), and 1.6% silicon (Si).
- 100: Total coating weight on both sides is 100 grams per square meter (g/m²).
DX51D +AZ100 Equivalent Grade
| Standard System | Equivalent/Similar Grade | Description and Notes |
| European Standard (EN) | DX51D+AZ100 | Original standard grade. AZ100 clearly indicates a total coating weight of 100 g/m² on both sides. |
| American Standard (ASTM) | AZ25, Class 1 or AZ26, Class 1 [ASTM A792/A792M] | Equivalent grade in U.S. standards. The number (25 or 26) in the U.S. code represents a minimum coating weight of 0.25 or 0.26 oz/ft² ≈ 76 g/m² (per side), making the total weight approximately 152 g/m². |
| Japanese Standard (JIS) | SGLCC Z12 [JIS G 3321] | In JIS standards, the grade for aluminum-zinc coated steel is SGLCC, with a following code indicating coating weight, such as Z12 (representing 120 g/m²), which is similar to AZ100. |
| Chinese Standard (GB) | DX51D+AZ100 [GB/T 14978] | The Chinese national standard directly adopts the European standard grade naming convention, so the grade is exactly the same. |
| International Standard | Galvalume | “Galvalume AZ25” or “Galvalume 100” is a globally recognized commercial name. |
DX51D +AZ100 VS DX51D +Z100
| Feature | Aluminum-Zinc Coating (AZ100) | Zinc Coating (e.g., DX51D+Z100) |
| Corrosion Resistance | Aluminum oxide film + Zinc sacrificial protection | Mainly Zinc sacrificial protection |
| Heat Resistance | Stable below 300°C | Zinc melting point 419°C, softens at high temperatures |
| Processability | Strong bonding of coating, not easily peeled off | Coating is brittle, prone to cracking during deep drawing |
| Applicable Environment | Marine, humid, high-temperature, and harsh environments | General indoor, dry environments |
DX51D + AZ100 Advantages and Applications
Due to its excellent high-temperature resistance, corrosion resistance, and formability, DX51D + AZ100 galvalime steel is widely used in applications requiring high durability, such as architecture, home appliances, and automotive applications.
Features
Applications
Construction Industry
- Roofs
- Walls
- Ventilation Ducts
- Steel Structures
- Drains
Home Appliance Industry:
- Air Conditioner Housings and Internal Components
- Microwave Oven Housings and Inner Tanks
- Water Heater Housings
- Refrigerator Back Panels and Compressor Panels
- Washing Machine Internal Parts
Building Interiors:
- Interior Decorative Panels
- Ceilings
- Ventilation Ducts (HVAC)
- Soundproof Wall Panels
General Manufacturing:
- Electrical Cabinets
- Control Box Housings
- Office Furniture
- Shelf Panels
- Automotive Structural Parts and Chassis Components
- Solar Mounting Systems
- Cable Trays
AZ100 vs AZ120 vs AZ150
| Feature | AZ100 | AZ120 | AZ150 |
| Coating | Total coating weight of 100g/m² on both sides | Total coating weight of 120g/m² on both sides | Total coating weight of 150g/m² on both sides |
| Corrosion Resistance | Good | Better | Excellent |
| Cost | Lowest | Medium | Highest |
| Processability | Excellent | Excellent | Good |
| Weight | Lightest | Lighter | Heavier |
| Main Application | General environment, indoor, cost-sensitive projects | Moderate corrosion environments, projects with higher lifespan requirements | High corrosion environments, projects with long lifespan requirements |
DX51D +AZ100 Factory &Manufacturer
If you’re looking for premium DX51D + AZ100 galvanized steel, or AZ120, AZ150, and more, please contact us. Wanzhi Group is a professional galvanized steel coil manufacturer from China. We offer OEM and ODM services for galvanized coil, galvanized sheet, galvanized roofing, galvanized strip, and painted galvanized steel.
Factory
Wanzhi Steel Factory has seven coated steel production lines and is ISO9001 and ISO14001 certified. Located in Boxing County, Binzhou City, Shandong Province, China, with an annual production capacity of 600,000 tons, we provide coil production, corrugated sheet, steel structures, and other galvanized material processing services. Need a material certificate or free samples? Please contact us.
Project
To date, our DX51D + AZ100 galvanized coil and sheet have been exported to over 100 countries and regions worldwide, serving clients in a variety of sectors, including wholesale, retail, factory, and project. We have extensive experience in exporting and providing customized solutions!
Price of DX51D +AZ100
The price of cold-rolled galvalume steel is primarily affected by thickness, width, and zinc coating thickness. AZ100-AZ150 steel prices range from $650 to $900 per ton. Leave a message and let us know your desired plate specifications, processing technology, and packaging options to get a free quote!
