Chromium-Free Galvanized Steel Coils | 0.4-3.5mm | Eco-Friendly Coating | ASTM A653M
Chromium-Free Galvanized Steel Coils redefine sustainability and performance, combining ASTM A653M compliance with an eco-friendly, hexavalent chromium-free coating for industries prioritizing environmental safety. Available in 0.4–3.5mm thicknesses and widths up to 1,500mm, these coils deliver exceptional corrosion resistance (1,200+ hours salt spray) while meeting strict EU REACH and RoHS standards. Ideal for automotive, construction, and consumer goods, they offer a greener alternative without compromising durability or aesthetics.
Key Benefits:
- Toxic-Free Coating: Chromium-free passivation ensures worker safety and compliance with global environmental regulations.
- Superior Corrosion Resistance: Zinc coating (Z60–Z275) with 15–30+ years lifespan in coastal/industrial environments.
- ASTM A653M Compliance: Certified for SS Grades 33–80, ensuring structural integrity and weldability.
- Lightweight & Versatile: 0.4–3.5mm thicknesses for precision stamping, bending, or roll-forming.
- Sustainable Production: Zero wastewater discharge, 80% recycled steel content, and ISO 14001-certified manufacturing.
- Fast Customization: Pre-cut, embossed, or pre-painted options (RAL colors) for streamlined workflows.
2. Technical Specifications
| Parameter | Details |
| Base Material | Low-Carbon Steel (C: 0.02–0.15%, Mn: 0.20–0.60%, P ≤0.04%, S ≤0.03%) |
| Coating Type | Hot-Dip Galvanized (Zinc: 60–275g/m²) + Chromium-Free Passivation |
| Grades | ASTM A653M (SS Grade 33/40/80), EN 10346 (DX51D+ZF), JIS G3302 (SGCC) |
| Thickness Range | 0.4mm–3.5mm (±0.03mm tolerance) |
| Coil Dimensions | Width: 600–1,500mm (±2mm), ID: 508/610mm, OD: 1,000–2,000mm |
| Mechanical Properties | Tensile Strength: 330–550 MPa, Yield Strength: 230–450 MPa, Elongation: 15–25% |
| Surface Properties | Smooth finish (Ra 0.4–1.0µm), oiled or dry film (0.5–3g/m²), spangle-free |
| Certifications | ASTM A653M, REACH, RoHS, ISO 1461, ISO 9001/14001, TUV Rheinland |
| Key Applications | Automotive chassis, roofing sheets, appliance housings, and solar racking |
3. Advantages of Importing Our Chromium-Free Coils
Competitive Edge:
- Cost Savings: 20–25% cheaper than EU/US suppliers with identical ASTM A653M certification.
- Eco-Compliance: Full compliance with REACH Annex XVII and RoHS Directive for EU/UK markets.
- Quality Assurance: Third-party tested for coating adhesion (cross-cut test ≥4B) and hardness (HRB 45–75).
- Fast Turnaround: 12–18 days lead time for bulk orders (15+ tons), including custom widths.
- Sustainable Packaging: Recyclable PE film + edge guards, carbon-neutral海运 options.
- Technical Support: Free material substitution guides and welding parameter optimization.
4. Eco-Conscious Industrial Applications
| Industry | Use Cases |
| Automotive | EV battery enclosures, door panels, and exhaust system shields. |
| Construction | Green building façades, rainwater harvesting systems, and modular housing. |
| Consumer Goods | Eco-friendly furniture, kitchenware, and electronic device casings. |
| Renewable Energy | Solar panel frames, wind turbine access platforms, and geothermal piping. |
| Agriculture | Organic crop storage silos, livestock equipment, and irrigation systems. |
| HVAC & Plumbing | Ductwork, ventilation units, and corrosion-resistant plumbing fixtures. |
| Retail | Sustainable retail displays, shelving, and signage. |
FAQ
1. Do you have your own factory?
Yes, we do. We have our own factory, we can provide stable inventory, competitive prices and good quality.
2. What is your surface treatment method?
We can make special logos, icons or other things you order on the products. No matter what, we can do it as per your request.
3. What kind of payment can you accept?
1).100% irrevocable L/C at sight.
2).30% T/T in advance, the balance according to the copy of the bill of lading.
3).30% T/T in advance and balance of L/C.
4. How about the delivery time?
5-7 days after deposit received.
5. Why choose our company?
A). We have more stable inventory, competitive prices and good quality.
B). We have more integrity experience in international trade.
C). We can provide personal customization services, such as adding your company's logo, specified colors, etc. to the product.
6. What is the use of the product?
Galvanized Steel Coils, industry, chemical industry, secondary processing, construction, etc.
7. Can you send samples for inspection?
We can. We can send you samples for free.
8. Can you make products according to our requirements?
Yes, we will strictly follow your requirements, such as packaging method, product length, product handling method, etc.
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Chromium Free Galvanized Steel Coils 0.4mm-3.5mm Eco Friendly Coating ASTM A653M Images
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