DX51D galvanized steel (DX51D+Z) is a commercial quality, hot-dip zinc-coated (galvanized) carbon steel defined by European standard EN 10346. It is produced from cold-rolled steel coils (like DC01) that are passed through a molten zinc bath, creating a strong metallurgical bond. The zinc coating provides excellent corrosion protection, making it an ideal choice for construction, automotive, and appliance applications. It is equivalent to SGCC (JIS, Japan) and DX51D+Z (GB/T, China).
Chemical Composition (Base Metal)
Typical chemical composition (% by mass) per EN 10346.
| Grade | C (%) | Si (%) | Mn (%) | P (%) | S (%) |
|---|---|---|---|---|---|
| DX51D | ≤0.18 | ≤0.50 | ≤0.70 | ≤0.120 | ≤0.045 |
Note: DX51D is not intended for structural applications. It is a commercial quality grade intended for simple forming and bending. The zinc coating weight (Z100, Z120, Z275, etc.) determines the level of corrosion protection.
Mechanical Properties
| Grade | Yield Strength (MPa) | Tensile Strength (MPa) | Elongation (%) | Coating Type |
|---|---|---|---|---|
| DX51D+Z | 140–300 | 270–500 | ≥22 | Pure Zinc (Z) |
Available Sizes & Delivery
| Thickness | 0.3–3.0 mm |
| Width | 600–1500 mm |
| Zinc Coating Weight | Z60 – Z275 (g/m² both sides) |
| Forms Available | Galvanized coil (GI), cut-to-length sheet |
| Standard | EN 10346 / JIS G3302 |
| Mill Test Certificate | EN 10204 3.1 with every shipment |
| MOQ | 5 Tons |
| Delivery Time | Within 10-15 days (≤1000 tons) |
Why Order from Zhongtang Steel?
- Excellent Corrosion Resistance — Zinc coating acts as a sacrificial anode to protect the steel
- Good Formability — Suitable for bending, profiling, and simple stamping
- EN 10204 3.1 MTC supplied with every shipment
- ISO 9001 certified manufacturer since 1998
- Mill-direct pricing — no trading company markup
Applications
- Construction — roofing, wall cladding, purlins, and gutters
- Home appliances — refrigerator back panels, washing machine casings
- Automotive — internal structural parts, underbody components
- HVAC ductwork and ventilation systems
- Steel furniture, shelving, and storage racks
- Base material for PPGI (color-coated coils)
