Product Introduction
Galvalume Steel Coil/Sheet, Aluzinc Steel Coil，GL Steel Coil
Standard | AISI,ASTM,GB,JIS | Material | SGCC,S350GD+Z,S550GD+Z,DX51D,DX52D,DX53D |
Thickness | 0.12-2.5mm | Width | 600-1250mm |
Tolerance | "+/-0.02mm | Zinc coating | Z30-150g/m2 |
Coil ID | 508/610MM | Coil Weight | 3-8 tons |
Technique | Hot rolled, cold rolled | Package | seaworthy package |
HRB | Soft Hard(<60),Medium Hard(60-85),Full Hard(85-95) |
Certification | ISO 9001-2008,SGS,CE,BV | MOQ | 25 TONS (in one 20ft FCL) |
Delivery | 15-20 days | Monthly Output | 10000 tons |
Surface treatment: | Oiled(O), Chromium(C), Phosphating(P), |
Spangle | Regular Spangle,Minimal Spangle, Zero Spangle,Big Spangle |
Standrad Packing | Dustproof kraftsheet
Iron Packing
Angle Protective
Packing Belt |
Payment | 30%T/T in advanced+70% balanced;irrevocable L/C at sight |
Remarks | Insurance is all risks and accept the third party test |
Mechanical properties of galvanized steel |
Usage | Grade | Yield strength(MPa) | Tensile strength(MPa) |
Punching galvnaized steel | DC51D+Z | - | 270-500 |
DC52D+Z | 140-300 | 270-420 |
DC53D+Z | 140-260 | 270-380 |
Structure galvanized steel | S280GD+Z | ≥280 | ≥360 |
S350GD+Z | ≥350 | ≥420 |
S550GD+Z | ≥550 | ≥560 |
Overview
The JIS G3321 Compliant Anti-Finger Galvalume Steel Coil is a premium metallurgical product designed for applications requiring superior surface protection, aesthetic appeal, and corrosion resistance. Composed of a 55% aluminum-zinc alloy (Aluzinc) coating (AZ120/AZ150g) on a G550 high-strength steel substrate, this coil features an anti-fingerprint treatment that prevents surface contamination from handling, while maintaining excellent formability for complex fabrication.
Available in 0.4mm and 0.43mm thicknesses (32 gauge equivalent) and compliant with JIS G3321, the coil balances lightweight design with industrial-grade durability. The anti-finger coating—transparent, non-toxic, and hydrophobic—ensures a clean, smudge-free surface, making it ideal for visible applications in appliances, electronics, and architectural cladding.
Features
Advanced Surface Protection:
Anti-Finger Treatment: Reduces fingerprint visibility and inhibits moisture retention on the surface, critical for products requiring frequent handling (e.g., kitchen appliances, consumer electronics).
55% Aluzinc Coating (AZ120/AZ150g): Offers 4x longer corrosion life than galvanized steel in coastal areas, with self-healing properties for minor scratches.
High-Strength Performance:
G550 steel substrate: Yield strength ≥550 MPa, tensile strength ≥590 MPa, suitable for load-bearing components in transportation and construction.
32 Gauge (0.4mm/0.43mm): Balances rigidity with lightweight characteristics (7.85kg/m² per mm thickness), reducing structural load in high-rise cladding.
JIS-Compliant Precision:
Meets JIS G3321 for galvalume steel, ensuring uniform coating distribution (±5% weight tolerance) and surface roughness (Ra ≤1.5μm) for high-quality painting/printing.
Spangle-free surface with anti-finger coating enables seamless lamination with plastic or wood veneers in furniture and interior design.
Environmental & Safety Compliance:
RoHS/REACH compliant: Free of lead, cadmium, and other hazardous substances, safe for direct contact with consumer products.
Low VOC emissions: Anti-finger coating cured at 200°C, ensuring no harmful off-gassing in indoor applications.
Application
Home Appliances: Forms premium refrigerator doors, oven panels, and range hoods, with anti-finger surface maintaining a clean appearance in high-touch areas.
Architectural Cladding: Creates low-maintenance facades for commercial buildings and luxury residences, available in pre-painted metallic finishes (e.g., brushed stainless steel effect).
Transportation Industry: Fabricates lightweight truck bodies, trailer skins, and railway carriage interiors, with AZ150 coating resisting salt spray and UV radiation in transit.
Electronics & Furniture: Used for server enclosures, office partitions, and decorative panels, combining scratch resistance with easy cleaning for high-traffic environments.
FAQ
Q: How effective is the anti-finger treatment against oils?
A: The hydrophobic coating repels most organic oils, allowing fingerprints to be wiped clean with a dry cloth; for stubborn stains, use a mild alcohol-based cleaner.
Q: Can I paint over the anti-finger surface?
A: Yes, the coating is compatible with most primers and topcoats; a light abrasion pretreatment (320-grit sandpaper) enhances paint adhesion for critical applications.
Q: What is the difference between AZ120 and AZ150 coatings?
A: AZ120 (120g/m²) is suitable for urban/industrial environments, while AZ150 (150g/m²) offers maximum protection for coastal or high-humidity zones (salt spray resistance: 1,500+ hours).
Q: Does the anti-finger coating affect formability?
A: No, the treatment is only 1-2μm thick and does not compromise ductility—the coil maintains ≥18% elongation for 0.4mm thickness during bending tests.
