Galvanized steel
DX51D is a grade of hot-dip galvanized low-carbon steel under EN 10346, which is primarily used for cold-forming applications. It offers excellent corrosion resistance and flexibility. It is usually used in construction, automotive manufacturing, and household appliances due to its versatility.
Galvanized steel according to DIN EN 10346 is an essential material in many industrial and construction applications. This type of steel is produced through a continuous hot-dip galvanizing process, where a zinc layer is applied to the steel strip. This coating provides excellent corrosion resistance and significantly increases the longevity of the steel products.
Manufacturing Process and Properties
The hot-dip galvanizing process, in which the steel is passed through a bath of molten zinc, results in a uniform zinc coating that protects the steel from rust and other environmental influences. The galvanizing process according to DIN EN 10346 ensures that the coating has high adhesion strength and resistance. The standard specifies requirements for the chemical composition, mechanical properties, and coating thickness of the zinc layer to ensure consistent quality.
DX51D: Machine folding quality
DX52D: Drawing quality
DX53D: Mild deep drawing quality
DX54D: Mild special deep drawing quality
DX55D: Mild special deep drawing quality (just +AS)
DX56D: Mild extra deep drawing quality
DX57D: Mild super deep drawing quality
Ingredients (chemical composition)
| Element | Content Range (wt%) | Function |
|---|---|---|
| Carbon (C) | ≤0.12 | Enhances ductility. |
| Manganese (Mn) | ≤0.60 | Increases strength. |
| Phosphorus (P) | ≤0.025 | Prevents cold brittleness. |
| Sulfur (S) | ≤0.025 | Improves machinability. |
| Aluminum (Al) | ≥0.020 | Improves coating adhesion. |
Performance Characteristics
| Property | Parameter Range |
|---|---|
| Tensile Strength | 270~350 MPa |
| Yield Strength | 140~240 MPa |
| Elongation (A80) | ≥22% (fracture elongation, suitable for deep drawing) |
| Galvanized Coating Weight | Common grades: Z60 (60g/m²), Z120 (120g/m²), Z180 (180g/m²), Z275 (275g/m²), etc. |
| Corrosion Resistance | Salt spray test: 100~500 hours without red rust. |
| Surface Quality | Zinc spangle surface (regular spangle, large spangle, small spangle) or smooth surface (no zinc flower, suitable for spraying). |
Materials and Specifications
| Parameter | Specification Range |
|---|---|
| Standard | EN 10346 Standard |
| Substrate Material | Low carbon steel (cold-rolled sheet) |
| Coating Type | Pure zinc coating (GI) or zinc-iron alloy coating (GA), typically pure zinc coating (GI) |
| Substrate Thickness | 0.15mm ~ 6.0mm |
| Zinc Coating Grade | Z60, Z80, Z100, Z120, Z150, Z180, Z200, Z275 (selected based on corrosion resistance requirements) |
| Standard Width | 600mm ~ 1500mm (customizable for slitting) |
GNEE STEEL also manufactures the following models; please inquire for pricing:
| Standard | GB/T 2518 | EN10346 | JIS G 3141 | ASTM A663 |
| Grade | DX51D+Z | DX51D+Z | SGCC | CS Type C |
| DX52D+Z | DX52D+Z | SGCD1 | CSTypeA.B | |
| DX53D+Z | DX53D+Z | SGCD2 | FS Type A, B | |
| DX54D+Z | DX54D+Z | SGCD3 | DDS Type C | |
| S250GD+Z | S250GD+Z | SGC340 | SS255 | |
| S280GD+Z | S280GD+Z | SGC400 | SS275 | |
| S320GD+Z | S320GD+Z | - | - | |
| S350GD+Z | S350GD+Z | SGC440 | SS340 Class4 | |
| S550GD+Z | S550GD+Z | SGC590 | SS550 Class2 |
FAQ:
1. What thickness and width ranges are available for DX51D steel coil?
Answer: Typical thickness: 0.12–3.0 mm
Typical width: 600–1500 mm
Custom sizes can be supplied according to customer requirements.
2. What coating types are available for DX51D galvanized steel?
Answer: The most common coating is hot-dip galvanized (GI). Zinc coating weight ranges from Z60 to Z275 g/m², depending on corrosion protection needs.
3. Which international standards cover DX51D?
Answer: DX51D is produced according to EN 10346, and it is comparable to ASTM A653 CS Type B and JIS G3302 SGCC.
4. Is DX51D suitable for forming and stamping?
Answer: Yes. DX51D offers excellent bending, stamping, roll forming, and welding performance, making it ideal for deep processing and fabrication.