Aluminum Zinc Steel Coil - Galvanized Alloy Coated Metal Strip for Construction & Manufacturing

Aluminum zinc steel coil represents a premium-grade metallic-coated steel product that combines the corrosion resistance of aluminum with the galvanic protection of zinc. This advanced coating technology delivers exceptional durability for roofing, cladding, and structural applications where long-term performance in harsh environments is critical. Engineered for construction contractors, metal fabricators, and industrial manufacturers, this alloy-coated strip offers superior value through extended service life and reduced maintenance requirements.

What is Aluminum Zinc Steel Coil?

Aluminum zinc steel coil is a cold-rolled steel substrate coated with an aluminum-zinc alloy through a continuous hot-dip process, typically consisting of 55% aluminum, 43.4% zinc, and 1.6% silicon by weight. This metallic coating provides barrier protection and sacrificial corrosion resistance, making it the preferred choice for exterior applications requiring multi-decade service life in coastal, industrial, and agricultural environments.

Aluminum Zinc Steel Coil Technical Specifications

Our aluminum zinc steel coil complies with ASTM A792/A792M-17 and EN 10346:2015 standards, featuring coating mass designations from AZ50 to AZ185 (150-550 g/m²). The base steel substrate ranges from commercial quality to structural grade with yield strengths of 230-550 MPa, available in thicknesses from 0.18mm to 2.0mm and widths up to 1,500mm. The coating microstructure exhibits superior cut-edge corrosion resistance, outperforming conventional galvanized steel by 2-4 times in accelerated salt spray testing per ASTM B117.

Key Advantages of Aluminum Zinc Coated Steel

The aluminum-rich coating delivers outstanding heat reflectivity, reducing surface temperatures by up to 20°C compared to traditional galvanized products, which translates to improved energy efficiency in roofing applications. The alloy's self-healing properties and dense oxide layer provide exceptional resistance to atmospheric corrosion, industrial pollutants, and coastal salt exposure. This metallic-coated strip demonstrates superior formability for roll-forming operations and maintains coating integrity through moderate bending and stamping processes without flaking or cracking.

Manufacturing Applications & Industries

Aluminum zinc steel coil finds extensive application in pre-engineered metal buildings, standing seam roofing systems, corrugated wall panels, and agricultural storage structures. The construction industry employs this material for rain-carrying components, flashings, and exterior trim where long-term weathering performance is essential. Industrial manufacturers utilize these coils for HVAC ductwork, appliance cabinets, and transportation equipment components. The automotive sector increasingly specifies aluminum-zinc coated steel for underbody shields and exhaust system heat shields due to its thermal stability up to 315°C.

Frequently Asked Questions

What is the minimum order quantity (MOQ)?

Our standard minimum order quantity is 25 metric tons per specification, though we accommodate smaller trial orders of 10 tons for qualified accounts. Mixed-specification orders may be consolidated to meet minimum tonnage requirements, with coil weights typically ranging from 3 to 8 tons depending on thickness and width parameters.

Do you provide material test certificates?

Yes, we supply EN 10204 Type 3.1 mill test certificates with every shipment, documenting chemical composition per heat analysis, mechanical properties including yield and tensile strength, coating mass verification, and surface quality inspection results. Third-party testing certifications are available upon request for critical applications requiring independent verification.

What is the typical delivery time?

Standard mill-direct delivery ranges from 28-35 days for stock specifications after purchase order confirmation and advance payment receipt. Custom orders requiring specific coating weights, surface treatments, or non-standard dimensions typically require 35-45 days production lead time. Expedited production scheduling is available for urgent requirements with associated premium charges.

Can you cut to custom sizes?

Our precision slitting capabilities accommodate custom widths from 100mm to 1,500mm with tolerance of ±2mm, while our cut-to-length services provide sheets from 1,000mm to 6,000mm in length. Blanking and specialized cutting patterns are available through our processing partners for complex geometries. All edge finishing options including deburred, rounded, or painted edges can be specified to meet your fabrication requirements.

Get a Competitive Quote for Aluminum Zinc Steel Coil

Request factory-direct pricing on aluminum zinc steel coil tailored to your project specifications. Our technical sales team provides material selection guidance, coating weight recommendations, and value engineering support to optimize performance and cost-effectiveness. Contact us today with your thickness, width, coating designation, and annual volume requirements to receive a detailed quotation within 24 hours, backed by our commitment to mill-quality standards and on-time delivery.