DX54D Galvanized Steel Sheet
DX54D Galvanized Steel Sheet is a high-formability hot-dip galvanized steel grade produced according to EN 10346 standards. It is specifically developed for deep drawing and complex forming processes where dimensional accuracy, surface quality, and corrosion resistance are critical. As a result, DX54D galvanized steel sheet has become a core material in automotive manufacturing, appliance production, and precision metal fabrication.
DX54D galvanized steel belongs to the deep drawing steel category and is characterized by low carbon content, controlled alloying elements, and a uniform zinc coating. Compared with general structural galvanized steel, DX54D offers significantly higher elongation and better plastic deformation capability, allowing manufacturers to produce complex shapes without cracking or surface defects.
The hot-dip galvanizing process ensures that the steel sheet is fully protected by a zinc layer, which provides long-term corrosion resistance through both barrier protection and sacrificial protection. This makes DX54D galvanized steel sheet suitable for both indoor and semi-outdoor applications.
Chemical Composition of DX54D Galvanized Steel Sheet (EN 10346)
| Element | Maximum Content (%) |
|---|---|
| Carbon (C) | 0.10 |
| Manganese (Mn) | 0.50 |
| Phosphorus (P) | 0.035 |
| Sulfur (S) | 0.035 |
| Aluminum (Al) | 0.02 – 0.07 |
Table 1: Chemical Composition Requirements for DX54D Galvanized Steel Sheet
The low carbon content combined with aluminum deoxidation ensures excellent formability and stable coating adhesion during galvanizing.
Mechanical Properties and Deep Drawing Performance
| Property | Requirement |
|---|---|
| Yield Strength (MPa) | 120 – 220 |
| Tensile Strength (MPa) | 260 – 350 |
| Elongation (%) | ≥ 36 |
| Plastic Strain Ratio (r-value) | ≥ 1.6 |
Table 2: Mechanical Properties of DX54D Galvanized Steel Sheet
High elongation and favorable r-values allow DX54D galvanized steel sheet to withstand deep drawing, stretching, and stamping operations without tearing, which is particularly important for automotive inner panels and appliance housings.
DX54D galvanized steel sheet is commonly supplied in thicknesses from 0.4 mm to 3.0 mm and widths up to 1500 mm. Zinc coating options such as Z100, Z180, and Z275 are available depending on corrosion protection requirements. For applications exposed to humidity or condensation, higher zinc coating weights are generally recommended.
Zinc Thickness
| Zinc Coating Grade | Zinc Coating (g/m²) | Corrosion Resistance | Typical Applications | Remarks |
| Z30 | 30 | Very low | Indoor parts, home appliance inner panels, ventilation ducts | Not suitable for outdoor use |
| Z60 | 60 |
Low |
Indoor structures, temporary facilities | Low cost |
| Z80 | 80 | Medium | Light steel structures, base metal for PPGI | Good cost performance |
| Z100 | 100 | Medium | PPGI, fencing, general construction
|
Common export grade |
| Z120 | 120 | Medium-High |
|
Longer service life |
| Z140 | 140 | Medium-High | Industrial buildings, agricultural facilities | Suitable for outdoor use |
| Z180 | 180 | High | Long-term outdoor structures, equipment housings
|
Recommended for outdoor use |
| Z200 | 200 | Very high | Humid environments, heavy structures
|
Higher cost |
| Z275 | 275 | Excellent
|
Coastal areas, solar mounting systems, high-corrosion environments | High standard |
The "spangle" is a type of surface morphology found on hot-dip galvanized (pure zinc-coated) steel coils. When the steel strip passes through the zinc pot, its surface becomes coated with liquid zinc. As the zinc layer naturally solidifies, zinc grains nucleate and grow, forming what is known as "spangle."
The name "spangle" comes from the fact that the complete zinc crystals display a snowflake-like pattern, which is quite vivid and descriptive.
Manufacturing and Processing Benefits
One of the most significant advantages of DX54D galvanized steel sheet is its compatibility with modern automated production lines. The consistent mechanical properties reduce tool wear and minimize production interruptions. In addition, the smooth surface quality supports further processing such as welding, painting, and powder coating without extensive surface treatment.
International buyers prioritize DX54D galvanized steel sheet because it meets European standards, performs reliably in mass production, and offers an excellent balance between performance and cost. Compared to stainless steel or aluminum alternatives, DX54D provides sufficient corrosion resistance at a more competitive price point.
When sourcing DX54D galvanized steel sheet, supplier reliability is just as important as product specifications. GNEE STEEL, established in 2008, has built a strong global reputation by supplying high-quality galvanized steel products to more than 8000 customers across over 160 countries. With a professional team of more than 200 employees, GNEE STEEL ensures strict quality control, stable supply capacity, and customized solutions for DX54D galvanized steel sheet, making it a dependable long-term partner for manufacturers worldwide.
| Grade | Yield Strength/Mpa | Tensile Strength/Mpa | Elongation/% |
| DX51D+Z | ≤360 | ≤440 | ≥20 |
| Dx52D+Z | ≤260 | 330-390 | ≥28 |
| DX53D+Z | ≤200 | 270-320 | ≥38 |
| DX54D+Z | ≤180 | 270-310 | ≥40 |
| S250GD+Z | ≥250 | ≥330 | ≥19 |
| S350GD+Z | ≥350 | ≥420 | ≥16 |
| S450GD+Z | ≥450 | ≥510 | ≥14 |
| S550GD+Z | ≥550 | ≥560 | / |
