NEWS
Looking for galvanized steel coil for home appliance manufacturing? You've come to the right place. As a direct factory, GNEE Steel supplies appliance-grade galvanized steel coil (grades DX51D, DX53D) that meets food safety and formability requirements. In this guide, we'll detail specs for fridges, washers, and ovens-plus how our coil improves production efficiency.
Galvanized steel coil
Galvanized steel coil is ideal for home appliances due to its corrosion resistance (critical for wet environments like washers) and smooth surface (perfect for painting). Appliance-specific grades (DX51D, DX53D) prioritize formability over high strength-unlike construction grades (S350GD) that focus on load-bearing.
From fridge inner liners to washer drums, our galvanized steel coil meets FDA food contact standards and delivers consistent quality for mass production.
Appliance-Grade Galvanized Steel Coil Selection
Different appliances need specific coil grades and specs. The table below matches coil to appliance parts:
| Appliance Part | Recommended Grade | Thickness | Coating Weight | Key Requirement |
|---|---|---|---|---|
| Fridge Shells | DX51D | 0.4-0.8mm | 60-80g/m² | Smooth surface for painting; good formability |
| Fridge Inner Liners | DX53D | 0.3-0.5mm | 40-60g/m² | Food-safe (Pb/Cd <10ppm); high elongation for deep drawing |
| Washer Drums | S220GD | 0.8-1.2mm | 80-100g/m² | Corrosion resistance for water contact; impact resistance |
| Oven Exteriors | DX52D | 0.6-1.0mm | 80-100g/m² | Heat resistance (up to 150℃); scratch resistance |
| AC Casings | DX51D | 0.5-0.7mm | 60-80g/m² | Weather resistance; lightweight for installation |
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Mechanical Properties for Appliance Coil
| Grade | Yield Strength (MPa) | Tensile Strength (MPa) | Elongation (%) | Surface Roughness (Ra) |
|---|---|---|---|---|
| DX51D | ≥235 | 315-500 | ≥28 | ≤1.6μm |
| DX53D | ≥210 | 270-410 | ≥34 | ≤1.2μm |
| S220GD | ≥220 | 330-450 | ≥26 | ≤1.6μm |
Food Safety & Surface Quality Standards
Appliance coil (especially for inner liners) must meet strict safety and surface standards:
- Food Safety Compliance:
Zinc coating contains no heavy metals (Pb <10ppm, Cd <10ppm)-meets FDA 21 CFR 175.300 and EU 10/2011.
Surface oil content ≤5mg/m²-prevents contamination of food-contact parts.
No toxic additives in the coating-safe for fridge/freezer inner liners.
- Surface Quality Grades:
|
Surface Grade |
Defect Allowance | Application |
|---|---|---|
| A | No visible defects | Fridge inner liners, washer drums |
| B | Minor, non-impacting defects | AC casings, oven exteriors |
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Dimensional Precision for Appliance Production
| Spec | Tolerance | Why It Matters for Appliances |
|---|---|---|
| Thickness | ±0.03mm | Ensures consistent stamping; avoids part misfit |
| Width | ±1mm | Reduces material waste during cutting |
| Flatness | ≤2mm/m | Prevents wrinkling during deep drawing |
Production Efficiency Benefits for Appliance Makers
Our galvanized steel coil helps appliance manufacturers improve efficiency:
- Fast Processing:
Consistent thickness reduces stamping die adjustments-speeds up production lines by 15-20%.
Smooth surface eliminates pre-painting sanding-cuts processing time.
- Waste Reduction:
Tight tolerances (±0.03mm thickness) reduce scrap rates to ≤2%-lower than industry average (3-5%).
Custom cut lengths (per appliance size) minimize offcuts.
- Inventory Flexibility:
Minimum order quantity of 3 tons-ideal for small-batch appliance production.
5-8 day lead time for standard grades-supports just-in-time manufacturing.
GNEE Steel's galvanized steel coil (DX51D, DX53D, S220GD) is tailored for home appliances, with food safety compliance, precise dimensions, and efficiency benefits for manufacturers. Whether you're making fridges, washers, or ovens, our coil meets your production needs.
If you're an appliance manufacturer looking for reliable coil suppliers, let us help. Contact GNEE Steel now to get an appliance-specific quotation for galvanized steel coil and request food safety certification documents!
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