Dx51d Z275
DX51D Z275 is galvanized steel with excellent corrosion resistance. We have two hot-dip galvanized steel production lines to produce DX51D Z275 in a full range of sizes and thicknesses.
Thickness: 0.3 – 0.5mm
Width: 600 – 1500mm or customized
Length: Cut as needed (C)
Spangle type: Zero spangle, small spangle, regular spangle, large spangle
Ensure product quality and transportation
DX51D Z275 is a hot-dip galvanized steel conforming to the European standard (EN 10346) and is a more widely used GI steel.
Compared to ordinary galvanized steel, DX51D emphasizes cold bending, folding, and roll forming performance, while the Z275 coating provides more durable corrosion protection in outdoor and general industrial environments. Therefore, it is widely used in engineering projects requiring a balance between processability and durability.
What does DX51D Z275 mean?
Simply put, DX51D determines the steel’s machinability (excellent), while Z275 determines its corrosion resistance (high corrosion resistance).
DX51D
- DX51D Z275 consists of two parts: the steel grade and the zinc coating grade.
- D stands for cold forming steel;
- X stands for unspecified rolled condition of the base material;
- 51 indicates the grade number;
- The last D indicates hot-dip galvanized.
Z275
Z275 indicates that the total weight of the zinc coating on both sides of the steel sheet is 275 g/m². According to the EN 10346 standard, the coatings on both sides collectively provide corrosion protection, with an average coating thickness of approximately 19 μm (which may vary slightly depending on the production process).
For products subject to long-term exposure to the outdoors or humid environments, Z275 is a common choice that offers a good balance between performance and cost.
Dx51d Z275 Technical Information
Dx51d Z275 Specification
| Product name | Dx51d Z275 Galvanized Steel |
| Thickness | 0.3 – 5mm |
| Width | 600 – 1500mm or customized |
| Length | Cut as needed (C) |
| Zinc Coating | Z275 |
| Material | Dx51d |
| Standard | EN 10346 |
| Spangle type | Zero spangle, small spangle, regular spangle, large spangle |
| Processing service | Shearing, stamping, bending, welding, pressing, etc. |
| Surface treatment | Chemical passivation, oiling, chemical passivation and oiling, pre-painting, etc. |
| Coil inner diameter | 508mm or 610mm |
| Coil weight | 3 – 5 tons or customized |
| MOQ | 10 tons |
| Packaging | Standard export package or as per your requirements |
Dx51d Z275 Chemical Composition
| Element | C | Mn | P | S | Si | Al |
| Content | ≤0.18% | ≤1.50% | ≤0.12% | ≤0.045% | ≤0.03% | ≤0.020% |
Dx51d Z275 Mechanical Properties
| Mechanical properties | Yield strength | Tensile strength | Elongation after break |
| Typical values | 160 – 220 MPa | 270 – 500MPa | 25% – 35% |
Grade Comparison
| Grade | Tensile strength (range) | Yield strength (range) | Elongation after break |
| DX51D+Z275 | 270 – 500 MPa | ≥140 MPa | ≥22% |
| DX52D+Z275 | 270 – 420 MPa | ≥180 MPa | ≥26% |
| DX53D+Z275 | 270 – 380 MPa | ≥220 MPa | ≥30% |
Dx51d Z275 Equivalent Grade
| Country | China (GB/T 2518) | USA (ASTM A653) | Japan (JIS G 3302) | International (ISO 3575) |
| Equivalent grade | Q195/Q235+Z275 | CS Type B (G90) | SGCC Z27 | CR4 Z275 |
Dx51d Z275 Galvanized Steel Product Advantages
- Good cold-forming properties: DX51D is a general-purpose cold-formed steel with good plasticity and ductility, capable of meeting the requirements of various processing methods such as bending, stamping, and roll forming.
- Excellent corrosion resistance: The 275 g/m² zinc coating is sufficiently thick to form a stable protective layer on the surface, making it suitable for use in humid environments; for example, the Z275 zinc coating is commonly used for galvanized steel in household appliances.
- Multiple surface options available: Surface finishes include large zinc bloom, small zinc bloom, no zinc bloom, and zero zinc bloom; surface treatments include passivation and oil coating.
Dx51d Z275 Galvanized Steel Application
- Construction field: used for roof and wall covering, building enclosure, structural parts manufacturing, and ventilation duct processing.
- Automobile industry: for making carriage panels, body covering parts, chassis parts, etc.
- Home appliance industry: applicable to the manufacture of shells and internal components of all kinds of large and small home appliances.
- Hardware products: commonly used in the manufacture of furniture fittings and metal containers.
- Other aspects: also used in the construction of agricultural facilities (agricultural greenhouses, grain silos, etc.) and the manufacture of electrical cabinets, etc.
FAQ ABOUT DX51D Z275
Q1: Can the DX51D Z275 be painted?
Of course it can, and it’s actually the preferred strategy for extending its service life. However, please note that it is not painted directly; it is produced using a roller coating process, and the finished product is a pre-painted galvanized steel coil (produced on a color-coated galvanized steel coil production line). The following video showcases our PPGI coil production line:
Service life is primarily influenced by environmental factors. In dry environments, it is 20–30 years; in humid coastal environments, the service life is shorter, typically 8–12 years. In coastal environments, we generally recommend applying high-weatherability paint, such as HDP/PVDF, to the surface to extend service life.
Q3: Can you supply slit coils?
Yes, we have precision slitting production lines capable of slitting galvanized steel coils into narrow-width galvanized steel strips. The video below shows us slitting galvanized steel coils into 20 mm wide strips:
Our zinc coating ranges from Z30 to Z275 g/m², and we can produce any coating within this range.
Why Choose Us?
- More than 17 years of production experience, more than 14 years of export experience, and passed ISO 9001, ISO14001 and other heat certificates.
- Using advanced production equipment and high-quality raw materials, not only high production capacity, but also excellent product quality.
- Equipped with a professional product testing center, the product will be tested for composition, performance, appearance, specifications, etc. to ensure product quality.
A professional metal coating manufacturer with a wide range of product types, our DX51D metal coating products include:
- DX51D+Z: hot-dip galvanized steel
- DX51D+AZ: hot-dip aluminum-zinc steel
- DX51D+ZA: hot-dip galvanized aluminum-steel
- DX51D+ZAM: hot-dip aluminum-zinc-magnesium
Our Packaging
Our Certificates
Wanzhi Steel has two hot-dip galvanized steel production lines and one electro-galvanized production line, with high production capacity, enough production capacity for large volume orders and fast delivery, if you have a need for galvanized steel products, please contact us for details.
