SMOOTH GALVANISED SHEET 0.6MM 1250X2500 (DX51D 140 GR/M²) / 3.125MP

Galvanised Plain Galvanised Sheet 0.6MM 1250X2500 DX51D 140 gr Zn/mp - EN 10327/04

Length: 2500 mm

Width: 1250 mm

Thickness: 0.6 mm

Theoretical weight: 15 kg

1. Definition and general description

The DX51D Smooth Galvanised Board DX51D is a cold-rolled steel blade, coated with a zinc layer by the hot-dip galvanising process. Its smooth surface and protective zinc coating make it ideal for applications in environments exposed to moisture or moderate corrosion. The quality of DX51D steel and the 140 g/m² zinc coating are defined according to the European standard EN 10327/04, which specifies the requirements for galvanised steel sheets used in cold forming.

• Surface type: Smooth, without embossed patterns (as opposed to ribbed sheet).
• Steel grade: DX51D, a low carbon steel intended for bending and profiling applications.
• Zinc coating: 140 g/m² (70 g/m² on each face), equivalent to a thickness of approximately 10 µm per face.
• Standard: EN 10327/04, governing continuously galvanised steel sheets for cold forming.

2. Chemical composition of DX51D steel

DX51D steel is a soft, non-alloy, low-carbon steel optimised for machinability and formability. The typical chemical composition (according to EN 10143 and EN 10327) is as follows:

• Notes: The exact composition may vary from manufacturer to manufacturer, but should be within the limits of the standard. Low carbon and impurity content ensures good ductility and weldability.

3. Mechanical properties

The mechanical properties of DX51D steel are designed to allow cold forming (bending, profiling, embossing). According to EN 10327, the mechanical properties are:

• Note: Mechanical properties may vary depending on sheet thickness and manufacturing process. DX51D is categorised as "commercial" steel (suitable for general, non-structurally critical applications).

4. Physical characteristics of DX51D galvanised sheet

DX51D smooth galvanised sheet is available in various thicknesses and sizes to suit application requirements. Typical characteristics include:

• Thickness: Typically between 0.4 mm and 3.0 mm (0.5-1.5 mm most common).
• Width: Standard between 1000 mm and 1500 mm (e.g. 1000, 1250, 1500 mm).
• Length: 2000 mm to 6000 mm or more, depending on requirements; can also be supplied in rolls.
• Zinc Coating: 140 g/m² (sometimes noted as Z140), which provides medium corrosion protection, suitable for moderately humid environments.
• Weight: Dependent on thickness; for example, a 1 mm thick sheet weighs approximately 8 kg/m² (including zinc coating).
• Surface finish: Regular spangle (visible zinc crystals) or minimised (fine, more aesthetic crystals).

5. Manufacturing process

The DX51D galvanised board is produced in several stages:

1. Cold rolling: DX51D steel is cold rolled to achieve the desired thickness and a smooth surface.
2. Cleaning: The steel surface is cleaned to remove impurities and oxides.
3. Hot dip galvanising: The board is immersed in a bath of molten zinc (approximately 450-460°C), forming a protective zinc layer. The 140 g/m² layer is applied evenly on both sides.
4. Surface treatment: May include chemical passivation (to prevent oxidation of the zinc) or light oiling (for temporary protection in storage).
5. Cutting and packing: The board is cut to the required dimensions and packed in sheets or rolls.

6. Advantages of galvanised sheet DX51D Z140

• Corrosion Resistance: The 140 g/m² zinc coating protects the steel against rust, prolonging the service life in damp or weathered environments.
• Excellent formability: Suitable for bending, profiling and embossing, thanks to DX51D quality.
• Aesthetic: Smooth surface and galvanised finish gives a clean, professional look.
• Good weldability: Can be welded using methods such as MIG/MAG or resistance welding, with adjustments for the zinc coating.
• Cost-effective: Compared to stainless steel or other anti-corrosion materials, galvanised sheet is more affordable.
• Versatility: It can be painted, perforated or machined for various applications.

7. Main applications

DX51D Z140 smooth galvanised sheet DX51D Z140 is used in many areas due to its combination of corrosion resistance and machinability. Main applications include:

• Construction:
  • Roofs and facades for residential or industrial buildings.
  • Gutter and gutter systems.
  • Light structural elements (e.g. profiles, panels).
• Automotive industry:
  • Body components or parts exposed to moisture.
• Household appliances:
  • Housings for appliances (e.g. washing machines, refrigerators).
• HVAC industry:
  • Tubing for ventilation and air conditioning.
• Agriculture:
  • Silos, tanks or fences.
• Industrial furniture:
  • Shelving, metal cabinets.
• Other applications:
  • Advertising billboards, metal boxes, industrial packaging.

8. Processability

DX51D galvanised board is easy to machine due to its properties:

• Weldability: good, but requires adequate ventilation to avoid inhalation of zinc vapours.
• Cutting: Can be cut by guillotine, laser or plasma.
• Forming: Excellent for bending, profiling or embossing due to ductility.
• Painting: The galvanised surface can be painted after suitable preparation (e.g. degreasing and priming).
• Additional coatings: May be treated with organic coatings (e.g. powder coating) for increased aesthetic or corrosion protection.

9. Limitations and recommendations

• Corrosion in aggressive environments: 140 g/m² zinc coating is suitable for moderately corrosive environments (e.g. urban or rural areas). In marine or industrial environments with chemicals, a thicker zinc coating (e.g. Z275) or stainless steel is recommended.
• Scratches: Damage to the zinc coating may expose the steel to corrosion; touch-up of affected areas is recommended.
• Weld galvanising: Welding can damage the zinc coating, requiring additional post-weld protection.
• Storage: The board should be stored in dry environments to prevent white corrosion (oxidation of zinc in humid conditions).

10. Standards and certifications

The DX51D Z140 galvanised sheet DX51D Z140 complies with EN 10327/04, which defines the requirements for continuously galvanised steel sheets. It also complies with EN 10143 for dimensional tolerances. Manufacturers provide conformity certificates (e.g. certificate 3.1 according to EN 10204) to guarantee the quality of the material. Additional tests may include:

• Zinc coating thickness analysis.
• Zinc coating adhesion tests.
• Verification of mechanical properties.

11. Comparison with other materials

• Compared to uncoated sheet: Galvanised sheet offers superior corrosion resistance.
• Compared to stainless steel: Cheaper but less resistant in highly corrosive environments.
• Versus painted sheet: Zinc offers sacrificial protection (zinc corrodes instead of steel), unlike paint.
• Compared to thicker coated galvanised sheet (e.g. Z275): Z140 is more economical but less durable in aggressive environments.

12. Availability and suppliers

DX51D Z140 smooth galvanised sheet is available from most metallurgical suppliers in Romania and Europe. Price varies depending on thickness, size, quantity and metal market fluctuations. For purchases, please check the technical specifications, quality certificate and delivery conditions.

13. Conclusion

DX51D smooth galvanised sheet with 140 g/m² zinc coating, according to EN 10327/04, is a versatile, corrosion resistant and easy to process material, ideal for applications in construction, industry and other fields. The quality of DX51D steel ensures excellent formability and the zinc coating provides effective rust protection in moderate environments. For applications in harsher conditions, thicker zinc coatings or additional treatments may be considered. If you need additional details such as pricing, suppliers or recommendations for a specific application, I can help clarify!