Hot Dip Galvalume Steel Coil | ASTM A792 Zinc-Aluminum Coated Steel

Tianjin TISCO International Trade Co., Ltd.

Verified Custom manufacturer 5yrs

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Technical Specifications of Hot Dip Galvalume Steel Coil

Property	Parameter	Description
Product Name	Hot Dip Galvalume Steel Coil	Steel coil coated with aluminum-zinc alloy
Coating Type	55% Aluminum, 43.4% Zinc, 1.6% Silicon	Standard Galvalume coating composition
Standard Compliance	ASTM A792, EN 10215, JIS G3321	Meets major international standards
Base Material	SGCC, DX51D, Q195, Q235, SPCC	Cold rolled or hot rolled steel substrate
Coating Mass	AZ50 - AZ185 (50-185 g/m²)	Total both sides coating weight
Thickness Range	0.13 - 2.0 mm	Available thickness options
Width Range	600 - 1500 mm	Standard and custom widths
Coil ID	508mm / 610mm	Inner diameter options
Coil Weight	3 - 8 tons	Standard coil weight range
Tensile Strength	≥270 MPa	Minimum tensile strength
Yield Strength	≥140 MPa	Minimum yield strength
Elongation	≥20%	Ductility measurement
Surface Treatment	Regular spangle, minimized spangle, zero spangle	Multiple surface finish options
Corrosion Resistance	2-4 times better than galvanized steel	Superior rust protection performance
Heat Resistance	Up to 315°C continuous service	Excellent high-temperature stability
Application	Roofing, construction, appliances, automotive	Typical application industries
Certification	ISO 9001, EN 10204 3.1, SGS	Quality certifications provided
Packaging	Waterproof paper, steel strapping, wooden pallet	Standard export packaging
MOQ	25 tons	Minimum order quantity

Hot Dip Galvalume Steel Coil | ASTM A792 Zinc-Aluminum Coated Steel

Hot dip galvalume 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, featuring a 55% aluminum-43.4% zinc-1.6% silicon alloy composition, delivers exceptional durability for architectural, industrial, and agricultural applications. Manufactured to stringent ASTM A792/A792M specifications, our galvalume coils serve contractors, metal building manufacturers, and roofing professionals seeking cost-effective solutions with superior weather resistance and extended service life in demanding environments.

What is Hot Dip Galvalume Steel Coil?

Hot dip galvalume steel coil is a cold-rolled steel substrate continuously coated with a zinc-aluminum alloy through a molten metal bath immersion process. The coating weight typically ranges from AZ50 to AZ185 (equivalent to 0.50-1.85 oz/ft² total both sides) per ASTM A792 Section 7.3, providing a metallurgically bonded protective layer that resists atmospheric corrosion, heat reflection, and mechanical damage better than conventional galvanized steel.

Hot Dip Galvalume Steel Coil Technical Specifications

Our galvalume coils comply with ASTM A792/A792M-20 Grade 37 (minimum yield strength 255 MPa), available in thickness range 0.14-2.00mm and width up to 1,500mm. The coating structure exhibits a three-layer composition: outer pure aluminum layer, intermediate aluminum-zinc-silicon alloy layer, and iron-aluminum intermetallic layer, delivering thermal reflectivity of 0.61 and corrosion resistance 2-6 times superior to galvanized steel in most atmospheric conditions.

Why Choose Our Galvalume Steel Coil

We maintain mill-direct partnerships with ISO 9001:2015 certified manufacturers, ensuring factory-competitive pricing and consistent quality control. Each coil undergoes rigorous testing per ASTM A792 Section 9, including coating weight verification (X-ray fluorescence method), bend testing (180° over 2t mandrel), and salt spray testing (ASTM B117 minimum 1,000 hours). Our value-driven approach includes material test certificates (EN 10204 3.1), custom slitting services, and technical consultation for optimal material selection.

Hot dip galvalume steel coil supplier

Frequently Asked Questions

What is the minimum order quantity (MOQ)?

Our standard MOQ is 25 metric tons per specification, though we accommodate smaller trial orders of 10 tons for qualified buyers. Mixed container loading is available for multiple coating weights or thicknesses, subject to mill scheduling and minimum 5-ton increments per item.

Do you provide material test certificates?

Yes, we supply EN 10204 Type 3.1 mill test certificates with every shipment, documenting chemical composition per ASTM E1086, mechanical properties per ASTM A370, and coating weight per ASTM A90. Third-party inspection by SGS, BV, or Intertek can be arranged at buyer's request.

What is the typical delivery time?

Standard lead time is 25-30 days after deposit confirmation for stock specifications (AZ100-AZ150, 0.30-0.80mm thickness). Custom orders requiring special coating weights or non-standard dimensions typically require 35-45 days, depending on mill production schedules and current order backlog.

Hot dip galvalume steel coil wholesale

Can you cut to custom sizes?

We offer precision slitting services with tolerance ±0.5mm for widths 100-1,500mm, and cut-to-length processing with tolerance ±2mm for lengths up to 12,000mm. Edge conditioning options include mill edge, slit edge, or deburred edge. Minimum processing quantity is 5 tons per cutting specification.

Get a Competitive Quote for Hot Dip Galvalume Steel Coil

Request your customized quotation today by providing specifications including coating designation (AZ50-AZ185), thickness, width, quantity, and delivery destination. Our technical sales team responds within 24 hours with mill-direct pricing, material availability, and shipping options. Contact us now to discover how our galvalume steel coil solutions can optimize your project's performance and budget requirements.

Hot dip galvalume steel coil China

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

Chris Martin

Canada

verified purchases

2025-09-04

Premium AZ185 Coating for Harsh Winter Conditions
Third repeat order - 25 tons of 0.75mm thickness with maximum AZ185 coating for Alberta cold storage facilities. Superior corrosion protection essential for our -40°C winter environment. Coating weight measured 1.87 oz/ft² total both sides, exceeding specification. Cut-to-length service provided 3000mm sheets with ±1.5mm tolerance. Technical consultation helped optimize gauge selection. Consistent quality across all three orders over 14 months.

Carlos Silva

Brazil

verified purchases

2025-09-23

Acceptable Quality with Initial Documentation Delay
We ordered 15 tons of 0.35mm galvalume, AZ100 coating for ventilation duct manufacturing. Material quality met ASTM A792 specifications after verification. Initial shipment arrived without complete test certificates, but supplier provided corrected EN 10204 3.1 documents within 5 days. Coating adhesion passed our internal bend testing. Lead time was 42 days. Issue was resolved professionally, material now in production.

William Taylor

Australia

verified purchases

2025-10-09

Reliable Quality for Coastal Environment Projects
Ordered 18 tons of 0.48mm thickness with AZ135 coating for seaside facility upgrades in Queensland. Corrosion resistance is 4 times better than our previous galvanized material after 6 months exposure. Mill certificates documented all mechanical properties per ASTM A370. Delivery was 38 days, slightly longer than quoted 30-35 days due to shipping delays. Material performed well in high-humidity coastal conditions.

Ahmed Al-Hassan

UAE

verified purchases

2025-10-28

Perfect Material for Desert Climate Structures
Purchased 40 tons of 0.55mm galvalume with AZ150 coating for metal building projects in Dubai. Heat reflection performance is critical in our 50°C summer temperatures. Coating uniformity was exceptional across entire order. ASTM B117 salt spray testing exceeded 1,100 hours. Custom slitting to 915mm width with deburred edge completed accurately. This is our fourth order. Will continue using for all desert climate applications.

Wei Chen

Singapore

verified purchases

2025-11-19

Outstanding Service for Mixed Container Order
We arranged mixed container with 12 tons of 0.45mm AZ120 and 8 tons of 0.70mm AZ150 for Southeast Asian distribution. Sales team accommodated our 5-ton minimum per specification requirement. All materials arrived with mill test certificates showing coating weight verified by X-ray fluorescence method. SGS inspection arranged smoothly. Lead time was 29 days. Excellent communication throughout the process.

Hans Mueller

Germany

verified purchases

2025-12-08

Good Value AZ100 Coils with Competitive Pricing
Ordered 22 tons of 0.60mm thickness, AZ100 coating for industrial panel production. Material quality met ASTM A792 Grade 37 specifications with yield strength at 268 MPa. Pricing was 8% lower compared to three European suppliers. Minor edge waviness on two coils but within acceptable tolerance. Slitting service accuracy was ±0.3mm. Delivery took 32 days. Overall solid choice for cost-sensitive projects.

Michael Johnson

United States

verified purchases

2025-12-23

Superior Coating Quality for Agricultural Buildings
We purchased 35 tons of 0.40mm galvalume coil with AZ120 coating for farm storage construction in Iowa. The three-layer coating structure provided excellent corrosion resistance in our humid environment. 180-degree bend test passed without cracking. Technical team responded within 18 hours with material selection guidance. Thermal reflectivity of 0.61 significantly reduced interior heat. Highly recommend for agricultural applications.

James Wilson

United Kingdom

verified purchases

2026-01-07

Excellent AZ150 Galvalume for Commercial Roofing
Ordered 28 tons of AZ150 coating, 0.50mm thickness, 1250mm width for our warehouse roofing project in Manchester. EN 10204 3.1 certificates confirmed 55% aluminum composition exactly per ASTM A792. Surface quality was outstanding with uniform spangle pattern. Delivered in 27 days with proper edge protection. Salt spray test results showed 1,200 hours resistance. This is our second order this year.