Xi'an Dongmeng Group Co., Ltd. is one of the most reliable manufacturers and suppliers of aluzinc steel coil in China, also supports customized service. With abundant experience, we warmly welcome you to wholesale cheap products in stock here and get free sample from our factory. For price consultation, contact us.
our Aluzinc Steel Coil
Xi'an Dongmeng Group Co., Ltd.
Aluzinc Steel Coil (55% Al-Zn Alloy Coated)
ASTM A792 / EN 10346-Compliant Corrosion Protection for Industrial & Construction Applications
Zinc provides sacrificial corrosion protection at cut edges or scratches.
This synergy delivers 2-6x longer lifespan vs. traditional galvanized steel (per ISO 9227 corrosivity class C4-C5).
Core Composition & Technology
Aluzinc steel coil features a 55% aluminium, 43.4% zinc, and 1.6% silicon alloy coating metallurgically bonded to commercial-grade steel. The silicon-enhanced formulation creates a dual-phase barrier:
Aluminium forms a dense, inert layer blocking moisture/chemical penetration.
Critical Performance Specifications
Parameter Specification Test Method
Base Steel Grade DX51D, DX52D, DX53D (EN 10346) EN 10130/10131
Coating Mass AZ100 (100g/m²), AZ150 (150g/m²), AZ200 (200g/m²) ISO 1460
Salt Spray Resistance 1,000–1,500 hours to red rust ASTM B117
Thickness Range 0.25mm – 2.0mm (±0.02mm tolerance) ISO 9442
Tensile Strength 270–500 MPa ISO 6892-1
Thermal Reflectivity 75–85% (TSR) ASTM E903
Bendability 0T (180° bend, no cracking) ISO 7438
Self-Healing Edge Protection
Zinc migrates to sheared/cut edges (per SEM analysis in ISO 14647), preventing red rust formation – critical for profiled roofing or slit coils.
High solar reflectance (≥80% for unpainted coils) reduces surface temperatures by 15–30°C vs. galvanized steel, lowering cooling energy costs.
Direct Comparison vs. Galvanized Steel
| Property | Aluzinc Coil | Galvanized Coil (GI) |
|---|---|---|
| Corrosion Resistance | 1,000–1,500 hrs red rust | 200–400 hrs red rust |
| Cut-Edge Protection | Active galvanic healing | No protection (rust starts in 3 months) |
| Solar Reflectance | 75–85% | 25–35% |
| Lifespan (C3) | 25–30 years | 10–15 years |
| Coating Adhesion | 0T bend pass | Peeling at 1T bend |
Our address
Room 4107, Runfeng Building, Sanqiao New Street, Weiyang District, Xi'an City, Shaanxi Province
Phone Number
+86 15769214734
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