Cold Rolled Galvalume Coil - ASTM A792 Steel Coils for Roofing & Construction

Technical Specifications of Cold Rolled Galvalume Coil

Cold Rolled Galvalume Coil - ASTM A792 Steel Coils for Roofing & Construction

Cold rolled galvalume coil represents a premium-grade aluminum-zinc alloy coated steel product that delivers exceptional corrosion resistance and thermal reflectivity for demanding architectural and industrial applications. Manufactured through a continuous hot-dip coating process, this material combines the formability of cold-rolled steel substrates with the superior protective properties of 55% aluminum-zinc alloy coating, making it the preferred choice for roofing systems, wall cladding, and structural components in coastal and high-humidity environments.

What is Cold Rolled Galvalume Coil?

Cold rolled galvalume coil is a metallic-coated steel sheet product manufactured by applying a 55% aluminum, 43.4% zinc, and 1.6% silicon alloy coating to cold-rolled steel substrates through continuous hot-dip galvanizing lines. This advanced coating technology provides three-to-six times greater corrosion resistance compared to conventional galvanized steel, with coating weights typically ranging from AZ50 to AZ185 (150-550 g/m²) per ASTM A792/A792M standards.

Cold Rolled Galvalume Coil Technical Specifications

Our cold rolled galvalume coils comply with ASTM A792/A792M-17 Grade 50 requirements, featuring base metal thickness from 0.15mm to 2.0mm, coil width up to 1,500mm, and yield strength minimum 345 MPa. The coating structure consists of aluminum-rich outer layer providing atmospheric corrosion resistance and zinc-rich inner layer offering galvanic protection, with total coating weight options of AZ50, AZ70, AZ100, AZ150, and AZ185 designations meeting both commercial and structural grade specifications.

Why Choose Our Cold Rolled Galvalume Coil

We maintain ISO 9001:2015 certified production facilities equipped with state-of-the-art continuous galvalume coating lines capable of processing 500,000 metric tons annually. Our mill-direct pricing eliminates intermediary markups while ensuring full traceability through heat number documentation, third-party inspection reports per ASTM A924 surface quality standards, and material test certificates confirming chemical composition per ASTM E1086 optical emission spectrometry analysis.

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 new customers establishing supply relationships. Mixed container loading is available for orders combining multiple thicknesses or coating weights within the same alloy designation.

Do you provide material test certificates?

Yes, we supply comprehensive mill test certificates per EN 10204 Type 3.1 documentation for every coil shipment, including chemical composition analysis, mechanical property test results, coating weight verification per ASTM A90 triple-spot test method, and surface quality inspection reports confirming compliance with ASTM A924 finish designations.

What is the typical delivery time?

Standard lead time is 25-30 calendar days from deposit receipt for stock specification orders, while custom thickness or coating weight requirements may extend to 35-40 days depending on production queue scheduling. Expedited processing is available for urgent projects with 15-day delivery upon request and capacity availability confirmation.

Can you cut to custom sizes?

Our precision slitting lines accommodate custom width cutting from 50mm to 1,500mm with ±2mm tolerance, while length cutting services provide sheared flat sheets from 1,000mm to 6,000mm per ASTM A1063 dimensional requirements. We also offer longitudinal edge trimming to specified camber tolerances for critical architectural applications requiring superior flatness characteristics.

Get a Competitive Quote for Cold Rolled Galvalume Coil

Contact our technical sales team today to receive factory-direct pricing for cold rolled galvalume coil tailored to your project specifications. We provide comprehensive material selection guidance, coating weight recommendations based on service environment classification per ASTM A1046, and value-engineered solutions that optimize performance while maintaining cost-effectiveness for roofing, siding, and structural steel applications worldwide.