Aluminum Zinc Coated Steel Coil - Galvanized AZ150 AZ200 ASTM A792

Aluminum zinc coated steel coil represents a premium-grade metallic-coated steel product that combines the barrier protection of aluminum with the galvanic protection of zinc. This advanced coating technology delivers exceptional corrosion resistance, making it the preferred choice for roofing, wall cladding, automotive components, and appliances where long-term durability in harsh environments is critical. Our mill-direct aluminum zinc coated steel coils comply with ASTM A792/A792M standards and serve construction, manufacturing, and industrial sectors globally.

What is Aluminum Zinc Coated Steel Coil?

Aluminum zinc coated steel coil is cold-rolled steel substrate coated with an alloy containing 55% aluminum, 43.4% zinc, and 1.6% silicon through a continuous hot-dip process. This metallic coating provides superior resistance to atmospheric corrosion compared to traditional galvanized steel, with service life improvements of 2-6 times depending on environmental conditions.

Aluminum Zinc Coated Steel Coil Technical Specifications

Our aluminum zinc coated steel coils are manufactured according to ASTM A792/A792M-17 Section 6 requirements. Standard coating designations include AZ50 (50 g/m² per side), AZ150 (150 g/m² per side), and AZ200 (200 g/m² per side). Substrate thickness ranges from 0.14 mm to 2.0 mm, with coil widths between 600 mm and 1,500 mm. The coating exhibits a characteristic spangle pattern and maintains adhesion per ASTM A792 bend test requirements.

Key Advantages of Aluminum Zinc Coating Technology

The 55% aluminum content provides outstanding barrier protection through formation of a stable aluminum oxide layer, while the zinc component offers galvanic protection at cut edges and scratches. This dual-protection mechanism extends product lifespan significantly. The coating demonstrates exceptional heat reflectivity (up to 70% solar reflectance), making it energy-efficient for roofing applications. Superior weld performance and paint adhesion characteristics enable diverse fabrication processes without coating degradation.

Common Applications and Industry Uses

Aluminum zinc coated steel coil finds extensive application in metal roofing systems, where its corrosion resistance and thermal properties reduce maintenance costs. The automotive industry employs this material for exhaust systems, mufflers, and underbody components requiring elevated temperature resistance up to 315°C. Appliance manufacturers utilize it for water heater tanks, oven components, and HVAC equipment. Agricultural buildings, grain silos, and industrial warehouses benefit from its cost-effective durability in rural and coastal environments.

Quality Standards and Certifications

Our production facilities maintain ISO 9001:2015 quality management certification and comply with ASTM A792/A792M-17 chemical composition requirements per Section 5. Mill test certificates document coating weight per ASTM A90 triple-spot test method, substrate mechanical properties per ASTM A1008/A1008M, and coating adhesion per ASTM D3359. Third-party inspection services from SGS, BV, or Intertek are readily available for quality verification.

Frequently Asked Questions

What is the minimum order quantity (MOQ)?

Our standard minimum order quantity is 25 metric tons per specification. For trial orders or sample evaluation, we accommodate reduced quantities of 5-10 tons with adjusted pricing. Mixed container loads combining different coating weights or thicknesses can be arranged to meet your 25-ton minimum requirement.

Do you provide material test certificates?

Yes, comprehensive mill test certificates accompany every shipment, documenting chemical composition per heat analysis, mechanical properties including yield strength and tensile strength, coating weight verification per ASTM A90, and dimensional tolerances. Certificates comply with EN 10204 3.1 standards and include batch traceability information.

What is the typical delivery time?

For standard specifications (AZ150, 0.4-0.8mm thickness, 1000-1250mm width), delivery occurs within 15-20 days after deposit confirmation. Custom specifications requiring special substrate grades or non-standard coating weights extend lead time to 25-30 days. Express production for urgent requirements can be negotiated with 10-12 day delivery for premium charges.

Can you cut to custom sizes?

Our processing capabilities include precision slitting to widths from 100mm to 1,500mm with ±2mm tolerance, and cut-to-length services producing sheets from 1,000mm to 12,000mm length. Blanking and profiling services for specific panel designs are available through our partnered fabrication facilities. Custom packaging per your warehouse requirements ensures damage-free delivery.

Get a Competitive Quote for Aluminum Zinc Coated Steel Coil

Request your factory-direct pricing today by contacting our technical sales team with your specific requirements including coating designation, substrate thickness, width, quantity, and delivery destination. Our metallurgical engineers provide application consulting to optimize material selection for your performance and budget objectives. Volume discounts and flexible payment terms available for established partnerships.