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

Tianjin TISCO International Trade Co., Ltd.

Verified Custom manufacturer 5yrs

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Technical Specifications of Cold Rolled Galvalume Coil

Property	Parameter	Description
Product Name	Cold Rolled Galvalume Coil	Aluminum-zinc alloy coated steel coil with superior corrosion resistance
Coating Type	55% Aluminum, 43.4% Zinc, 1.6% Silicon	Standard Galvalume (Zincalume) composition per ASTM A792
Standard Compliance	ASTM A792, EN 10215, JIS G3321	Meets major international standards for metallic-coated steel
Base Material	Cold Rolled Steel / ASTM A653 / SGCC	High-quality cold rolled substrate
Coating Weight	AZ50 - AZ185 (50-185 g/m²)	Available coating mass per side, customizable
Tensile Strength	≥270 MPa (Grade 40) / ≥550 MPa (Grade 80)	Varies by grade specification
Yield Strength	≥140 MPa (Grade 40) / ≥550 MPa (Grade 80)	Minimum yield strength per ASTM A792
Elongation	≥20% (Grade 40) / ≥10% (Grade 80)	Ductility in 50mm gauge length
Thickness Range	0.15 - 2.0 mm	Standard thickness options for cold rolled coil
Width Range	600 - 1500 mm	Standard and custom widths available
Coil Weight	3 - 8 tons	Standard coil weight range
Surface Finish	Regular Spangle, Minimized Spangle, Skin-passed	Multiple surface treatment options
Corrosion Resistance	2-4 times better than galvanized steel	Superior protection in marine and industrial environments
Heat Reflectivity	≥70%	Excellent thermal reflectivity for roofing applications
Application	Roofing, Cladding, Automotive, Appliances, HVAC	Typical application industries
Certification	EN 10204 3.1, ISO 9001, SGS	Quality certifications provided
Packaging	Waterproof paper, steel strapping, wooden/steel pallet	Standard export packaging with moisture protection
MOQ	25 tons	Minimum order quantity per specification

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.

cold rolled galvalume coil supplier

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.

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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.

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Ratings & Reviews

5.0

Very satisfied

Based on 8 reviews for verified purchases

Supplier service

5.0

On-time shipment

5.0

Supplier service

5.0

Robert Brown

United Kingdom

verified purchases

2025-09-12

Premium Formability for Complex Profiles
Procured 25 tons of 0.5mm cold rolled galvalume coil, AZ100 coating for curved roof panel manufacturing. Exceptional formability with zero cracking at 180-degree bend radius testing. Coating adhesion passed T-bend test per ASTM A653 requirements. Custom slitting to 915mm width maintained ±1.5mm tolerance. Lead time was 26 days including precision cutting services. Material enables our complex architectural designs without coating damage.

William Taylor

Australia

verified purchases

2025-09-29

Acceptable Quality with Initial Documentation Delay
Ordered 15 tons of 0.6mm galvalume coil, AZ150 coating for marine container modification project. Material quality meets ASTM A792 specifications and coating weight verified at 485 g/m². Initial shipment arrived without mill test certificates, causing 5-day project delay. Supplier expedited documentation via courier and provided additional third-party inspection report as compensation. Material performance in salt environment satisfactory after 60 days testing.

Hans Mueller

Germany

verified purchases

2025-10-15

Reliable Material with Consistent Properties
Purchased 20 tons of 0.55mm cold rolled galvalume, AZ120 coating for industrial equipment housings. Mechanical properties consistent across all coils: yield strength 348-355 MPa range. Surface finish quality suitable for powder coating application. Compared quotes from 5 European suppliers - this offered best value. Packaging could be improved as outer wrap had minor moisture damage, but coils themselves unaffected.

Wei Chen

Singapore

verified purchases

2025-11-02

Perfect Quality for High-Humidity Applications
Ordered 12 tons trial order of 0.4mm galvalume coil, AZ100 coating for tropical warehouse roofing evaluation. Chemical composition analysis showed 54.8% aluminum, 43.6% zinc, 1.6% silicon - perfectly balanced. Thermal reflectivity measured 0.61 solar reflectance index. After 90 days in Singapore humidity conditions, coating adhesion remains excellent with no blistering. Approved for 50-ton repeat order.

Carlos Silva

Brazil

verified purchases

2025-11-20

Outstanding Technical Support and Documentation
Procured 35 tons of mixed specifications: 0.6mm and 0.8mm thickness, both AZ150 coating, 1500mm width for agricultural building project. Sales team provided detailed service environment analysis per ASTM A1046 classification system. All coils included heat number traceability and optical emission spectrometry reports per ASTM E1086. Responded to technical queries within 4 hours throughout order process.

Ahmed Al-Hassan

UAE

verified purchases

2025-12-08

Good Value AZ70 Coils for Wall Cladding
Ordered 22 tons of 0.45mm galvalume coil for exterior wall panels in Dubai project. Pricing was 12% lower than local distributors while maintaining ASTM A792 compliance. Yield strength tested at 362 MPa, exceeding 345 MPa minimum requirement. Minor edge waviness on two coils but within acceptable tolerance. Delivery took 32 days, slightly longer than quoted 28 days.

Michael Johnson

United States

verified purchases

2025-12-23

Superior Flatness for Architectural Panels
Purchased 18 tons of 0.7mm cold rolled galvalume coil with AZ100 coating for standing seam roof panels. Camber tolerance held within 3mm over 3-meter lengths, exceptional for roll forming operations. Surface quality met ASTM A924 regular spangle finish. Technical support provided coating weight recommendations based on our Chicago climate classification. This is our 4th consecutive order.

James Wilson

United Kingdom

verified purchases

2026-01-07

Excellent Corrosion Resistance for Coastal Project
Ordered 28 tons of AZ150 coated galvalume coil, 0.5mm thickness, 1250mm width for seaside warehouse roofing. Material certificates confirmed 55% aluminum composition per ASTM A792 Grade 50. Coating weight measured 458 g/m² on triple-spot testing. After 6 months exposure to salt spray environment, zero rust formation observed. Delivered in 27 days with full EN 10204 3.1 documentation.