Galvalume AZ120 – a cost-effective aluminum-zinc coated steel solution for medium corrosive environments, regular temperature scenarios and medium to long service life. With Al₂O₃ passivation + cathodic protection as the core, it combines good corrosion resistance, heat reflection and processability, and is widely used for architectural roofing, industrial components and utilities!
Wanzhi – Aluzinc AZ120 Steel Coil
Wan Zhi Group supplies GL steel products in accordance with international standards (ASTM A792/EN 10346/GB/T 14978), including: DX51D+Galvalume AZ120 (European Standard Mild Steel) SGCC+AZ120 (Japanese Standard Commercial Grade) Q195+AZ120 (General Purpose Structural Grade), as well as providing customized services (OEM/ODM), covering galvanized/aluzinc/zinc-aluminum-magnesium coated steel sheet processing.
Technical Specification
| Parameter | Standard Range | Custom Range | Tolerance Standard |
| Thickness | 0.3-1.5mm | 0.15-2.5mm | ±0.03mm (≤1mm) / ±3% (>1mm) |
| Width | 600-1300mm | 300-1800mm | ±2mm |
| Length | 1000-5000mm | 500-10000mm | +10mm / -0mm |
Core Performance
| Project | Parameter Value |
| Substrate Type | Low carbon steel (DX51D/Q195) |
| Coating Composition | 55% Al – 43.4% Zn – 1.6% Si |
| Coating Weight | 120 g/m² (both sides) |
| Corrosion Resistance | ≈ 2-4 times that of Z180 galvanized steel (same thickness) |
| Salt Spray Test | 2000-2500 hours without red rust |
| Short-term Heat Limit | 450°C |
| Solar Reflectivity | ≥ 70% |
| Edge Self-healing | Zinc migration protection mechanism |
International Standard Certification
| Region | Standard Number | Grade |
| US Standard | ASTM A792 | AZ120 |
| EU Standard | EN 10346 | AZ120 |
| National Standard | GB/T 14978 | AZ120 |
Galvalume AZ120 Surface Treatment Process
- Passivation: Cr⁶⁺-free environmentally friendly passivation film
- Fingerprint-resistant treatment: nano-coating against residue
- Coating options: polyester (PE)/fluorocarbon (PVDF) color coating
Galvalume AZ120 Application Scenarios
- Roofing/wall panels (AZ120 Galvalume corrugated sheet)
- Warehouse door panels, gutters
Industry and people’s livelihoods
- Appliance housings (oven/air conditioner backsheets)
- Ventilation ducts, electrical cabinets
Moderately corrosive environments
- Inland plant roofs, agricultural greenhouse frames
- Photovoltaic rack linings
Galvalume AZ120 Advantages
Galvalume AZ120 vs AZ150 GL Steel
| Parameter | Galvalume AZ120 | Galvalume AZ150 |
| Coating Weight | 120g/m² | 150g/m² |
| Single-side Thickness | 8.4μm | 10.5μm |
| Salt Spray Life | 2000-2500 hours | 3000+ hours |
| Cost-effectiveness | 15%-20% cost reduction | Premium for ultra-long life |
| Applicable Environment | C2-C3 (Rural/Urban Industrial Areas) | C4-C5 (Coastal/Strongly Corrosive Industrial Areas) |
Galvalume Selection Guide
| Scenario | Recommended Grade | Coating/Treatment | Expected Lifespan |
| Coastal Roof (C4) | DX51D+AZ150 | Epoxy Primer + PVDF Topcoat | 20+ years |
| Urban Industrial Factory (C3) | SGCC+AZ120 | Chrome-free Passivation + Fingerprint-resistant | 15-25 years |
| Automotive Heat-resistant Parts (C5) | HX380LAD+AZ150 | High-temperature Passivation | 10+ years |
| Household Appliances (C2) | DC51D+AZ120 | Conductive Coating | 30+ years |
Wanzhi Group – Galvalume AZ120 Factory
Zhengzhou Wanzhi Steel materials co,.ltd, is a China steel supplier, Shandong Wanzhi Steel is our factory, since 2011 we have supplied galvanized steel, galvalume steel, prepainted steel, ZAM steel, alloy steel, stainless steel and so on to more than 100 countries and regions all over the world. Since 2011, we have supplied galvanized steel, galvalume steel, prepainted steel, ZAM steel, alloy steel, stainless steel and so on to more than 100 countries and regions all over the world.
- One Aluminum-Zinc/Zinc-Aluminum-Magnesium plating line
- Average monthly production capacity 10,000 tons
- Customized plating weights/plate widths/finishes (matte/glossy)/coatings are available
- Certifications: ISO9001, ISO14001, EN 10346Galvalume Selection Guide
Galvalume AZ120 – Cases and Projects
So far, our Aluzinc coated steel has been exported all over the world, providing professional solutions for commercial hospital projects, roofing plants, guttering plants, appliance manufacturing, greenhouse construction and many more applications.
Liberia Medical Center
- Solution: 0.7mm Galvalume AZ150 GL steel corrugated sheet (coating weight 150g/m²)
- Advantage: Resistant to high temperature, high humidity and salt spray corrosion.
Greenhouse shed in Saxony
- Solution: Galvalume AZ120 bare sheet (0.5mm corrugated structure)
- Advantage: resistance to ammonia corrosion + 10 years life time
Shopping mall roof
- Solution: AZ150 matte color coated panels (solar reflectivity ≥80%)
- Advantage: 30% reduction in air conditioning energy consumption
Wanzhi Group’s Galvalume AZ120 GL steel provides cost-effective coated steel solutions for architectural roofing, appliance manufacturing, and light industry with “economy + balanced protection” at its core. 120g coating design, excellent processability, and heat reflectivity meet the demand for long-lasting protection and cost reduction in moderately corrosive environments. The 120g coating design, excellent processability and heat reflectivity meet the needs of medium corrosive environments for long-lasting protection and cost reduction.