Galvanized Steel Coil
DX51D galvanized steel is a low-carbon cold-rolled steel substrate that undergoes a hot-dip galvanization process. This treatment gives the steel excellent corrosion resistance, making it well-suited for environments exposed to moisture and harsh weather conditions. Known for its outstanding durability and formability, DX51D is widely used in industries such as construction, automotive, and home appliances, where long-lasting performance is essential.
DX51D steel usually comes as coils, strips, or sheets. It works well for many manufacturing processes like stamping, welding, and coating.Galvanized steel refers to carbon steel coated with a layer of zinc, which acts as a protective barrier and sacrificial anode, preventing rust formation even when the surface is scratched.
Z275 means the total zinc coating mass is 275 g/m² (both sides), providing strong protection in harsh environments such as outdoor construction, humid regions, and coastal areas.
DX51D Equivalent Grades
| Grades | Standard | Number | Type |
| DX51D | EN 10346 | 1.0917 | Cold-rolled, continuously hot-dip galvanized steel |
| DX51D | EN 10346 | 1.0226 | Continuously hot-dip galvanized steel |
Key Chemical Composition of DX51D
| Element | C (%) | Mn (%) | P (%) | S (%) | Al (%) |
|---|---|---|---|---|---|
| Max Value | 0.12 | 0.60 | 0.10 | 0.045 | 0.30 |
Mechanical Properties of DX51D Z275
| Property | Value |
|---|---|
| Yield Strength | ≥ 140 MPa |
| Tensile Strength | 270–500 MPa |
| Elongation | ≥ 22% |
| Bending | 0T–2T without cracking |
Comparison with DX53D+Z and DX54D+Z
| Grade | Formability | Strength | Typical Application |
|---|---|---|---|
| DX51D+Z | Good | Medium | Roofing, panels, ducts |
| DX53D+Z | Better | Lower | Deep drawing parts |
| DX54D+Z | Excellent | Lower | Complex forming auto parts |
DX51D strikes the best balance between strength and formability, making it the most economical and versatile grade for general fabrication.
Typical Applications
- Roofing and wall panels
- HVAC duct systems
- Structural frames
- Household appliances
- Light industrial equipment
Coating Table
| Coating designation | Minimum total coating mass, both surfaces* (g/m²) | Guidance value for coating thickness per surface (typical μm) |
|---|---|---|
| Z100 | 100 | 7 |
| Z140 | 140 | 10 |
| Z180 | 180 | 13 |
| Z200 | 200 | 14 |
| Z225 | 225 | 16 |
| Z275 | 275 | 20 |
| Z350 | 350 | 25 |
| Z450 | 450 | 32 |
| Z600 | 600 | 42 |
| ZA095 | 95 | 7 |
| ZA130 | 130 | 10 |
| ZA155 | 155 | 11 |
| ZA185 | 185 | 14 |
| ZA200 | 200 | 15 |
| ZA255 | 255 | 20 |
| ZA300 | 300 | 23 |
| ZF080 | 80 | 6 |
| ZF100 | 100 | 7 |
| ZF120 | 120 | 8 |
| ZF140 | 140 | 10 |
*In triple spot test.
In addition to these coating thicknesses defined according to EN10346, the offering contains different asymmetric coatings, coatings with equal coating minimum mass per surface, and other OEM specifications that are available upon request.
GNEE STEEL supplies high-quality Galvanized Steel Coil with full compliance to international standards and strict quality control. With advanced production facilities and extensive export experience, GNEE STEEL delivers stable quality, competitive pricing, and customized solutions for construction and appliance manufacturers worldwide.
From inquiry to shipment, GNEE STEEL provides professional service, technical consultation, and reliable supply support.
Contact GNEE STEEL today to receive a competitive quotation and comprehensive technical assistance.
