hot-dip galvanized steel
DX51D+Z hot-dip galvanized steel is accord with EN standard, the first 'D' means this is a kind of steel for cold forming use, the material number of DX51D+Z is 1.0226 , the last 'D' shows the process technology is hot-dip galvanizing, according to different demand from customers, it can be zinc coated (Z), zinc-iron alloy coated (ZF), zinc-aluminium alloy coated (ZA), aluminium-zinc alloy coated (AZ).
DX51D+Z galvanized sheet is also relatively common galvanized sheet. DX51D+Z is a galvanized sheet inside a variety of materials, which can be made with zero spangle or regular flower spangle surface. But only can be used for simple bending and deformation.
DX51D+Z galvanized steel sheet refers to the surface of a layer of zinc plate. Galvanizing is a frequently used and effective method of preserving corrosion.
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) |
Comparison of Similar Materials
DX51D+Z is the material designation in the European Standard EN 10346, and there are similar material grades in American, Japanese and Chinese standards, such as CS Type B, SGCC, DC51D+Z, etc.
| Standard/Grade | Corresponding Material |
|---|---|
| EN 10346 | DX52D+Z, DX53D+Z, DX54D+Z |
| ASTM A653 | CS Type B (US standard, similar tensile strength, zinc coating expressed in oz/ft²) |
| JIS G3302 | SGCC (Japanese galvanized steel sheet) |
| GB/T 2518 | DC51D+Z (Chinese standard, similar performance to DX51D) |
GNEE STEEL also produces other galvanized grades:
| 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 |
