Zam Steel Coil Supplier - Galvanized Aluminum-Zinc Coated Steel Coils

Tianjin TISCO International Trade Co., Ltd.

Verified Custom manufacturer 5yrs

Technical Specifications of ZAM Steel Coil

Property	Parameter	Description
Product Name	ZAM Steel Coil	Zinc-Aluminum-Magnesium coated steel coil with superior corrosion resistance
Coating Type	Zn-Al-Mg Alloy (ZAM)	Zinc 90-95%, Aluminum 4-8%, Magnesium 1-3%
Coating Weight	60-275 g/m²	Both sides total coating weight options
Base Material	Cold Rolled Steel / Hot Rolled Steel	High-quality carbon steel substrate
Standard Compliance	JIS G3323, EN 10346, ASTM A653M	Meets international coating standards
Thickness Range	0.12 - 3.0 mm	Available thickness options for various applications
Width Range	600 - 1500 mm	Standard and custom widths available
Coil Weight	3 - 12 tons	Standard coil weight per customer requirements
Tensile Strength	270 - 550 MPa	Varies by grade and thickness
Yield Strength	≥140 MPa	Minimum yield strength for structural applications
Elongation	≥20%	Ductility in standard gauge length
Surface Treatment	Regular Spangle, Minimized Spangle, Zero Spangle	Multiple surface finish options
Corrosion Resistance	10-25 times better than galvanized steel	Superior protection in harsh environments
Application	Roofing, Automotive, Construction, Appliances	Wide range of industrial applications
Temperature Resistance	-40°C to 315°C	Suitable for high-temperature processing
Certification	ISO 9001, EN 10204 3.1, SGS	Quality certifications provided
Packaging	Eye to wall, eye to sky with waterproof paper	Standard export seaworthy packaging
MOQ	25 tons	Minimum order quantity per specification

Zam Steel Coil Supplier - Galvanized Aluminum-Zinc Coated Steel Coils

Zam steel coil supplier provides premium-grade zinc-aluminum-magnesium (ZAM) coated steel coils engineered for exceptional corrosion resistance in demanding industrial applications. This advanced metallic coating technology combines zinc, aluminum (approximately 6%), and magnesium (approximately 3%) to deliver superior protection compared to conventional galvanized steel, making it the preferred choice for automotive components, construction materials, electrical enclosures, and outdoor infrastructure projects requiring extended service life in corrosive environments.

What is Zam Steel Coil?

Zam steel coil represents a next-generation corrosion-resistant steel product featuring a hot-dip coating composed of zinc-aluminum-magnesium alloy applied to cold-rolled or hot-rolled steel substrates. The proprietary coating composition typically contains 96% zinc, 6% aluminum, and 3% magnesium by weight, creating a unique microstructure that provides self-healing properties and barrier protection. This innovative coating technology, developed to address the limitations of traditional galvanized steel, offers corrosion resistance up to 10 times greater than conventional zinc coatings in salt spray testing per ASTM B117 standards.

Zam steel coil supplier China

Zam Steel Coil Technical Specifications

Our Zam steel coil inventory meets international quality standards with substrate thickness ranging from 0.20mm to 3.0mm, width options between 600mm and 1,500mm, and coating mass classifications from Z08 (80 g/m²) to Z27 (270 g/m²) per side. The base steel conforms to JIS G3302 SGHC or equivalent grades, with tensile strength of 270-500 MPa depending on substrate selection. Coating adhesion exceeds 180-degree bend test requirements, and the zinc-aluminum-magnesium layer demonstrates uniform thickness variation within ±15% across the coil width, ensuring consistent performance in roll-forming and stamping operations.

Why Choose Our Zam Steel Coil Supply Service

As an established Zam steel coil supplier with direct mill partnerships across Asia, we maintain extensive inventory in multiple coating weights and substrate grades to support just-in-time manufacturing schedules. Our quality assurance program includes third-party inspection of coating composition via X-ray fluorescence analysis, salt spray testing documentation, and mill test certificates traceable to heat numbers. We offer value-added services including precision slitting to custom widths (±0.5mm tolerance), cut-to-length processing, and protective film application for surface-sensitive applications, all backed by factory-competitive pricing and delivery within 15-25 days for standard specifications.

Frequently Asked Questions

What is the minimum order quantity for Zam steel coil?

Our standard minimum order quantity is 25 metric tons per specification, though we accommodate smaller trial orders of 10 tons for qualified customers evaluating material performance. Mixed container loading is available for orders combining different coating weights or widths, subject to mill cutting capabilities and economic lot sizes.

Zam steel coil manufacturer

Do you provide material test certificates for Zam coated steel?

Yes, every shipment includes original mill test certificates (MTC 3.1 per EN 10204) documenting chemical composition of both substrate and coating, mechanical properties including yield strength and elongation, coating weight measurements, and surface quality inspection results. Third-party inspection reports from SGS or Bureau Veritas can be arranged upon request.

What is the typical delivery time for Zam steel coil orders?

Lead times vary by specification: stock items in standard coating weights (Z12, Z18) ship within 7-10 business days, while mill-direct orders for specific substrate grades or non-standard dimensions require 20-30 days from purchase order confirmation. Expedited production slots may be available during off-peak seasons with premium pricing.

Can you process Zam steel coil to custom widths?

Our precision slitting facility accommodates width tolerances of ±0.5mm for slit widths between 20mm and 1,250mm from master coils. We also provide edge conditioning options including deburred edges for safety-critical applications and camber correction to 2mm maximum deviation per 2 meters of length, suitable for automated feeding systems in stamping lines.

Get a Competitive Quote for Zam Steel Coil

Contact our technical sales team today to receive a detailed quotation for your Zam steel coil requirements. Our application engineers can assist with coating weight selection, substrate grade recommendations, and processing capabilities to optimize material performance and cost-efficiency for your specific manufacturing process. Request samples, technical data sheets, and corrosion test reports to validate material suitability before placing production orders.

Zam steel coil wholesale

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

2025-09-10

Outstanding Technical Support and Material Quality
Ordered 22 tons of ZAM steel coil (0.9mm substrate, Z12 coating, custom slit to 650mm width) for ventilation system components. Supplier's technical team provided detailed coating weight recommendations based on our -40°C winter exposure requirements. Precision slitting achieved ±0.4mm tolerance with deburred edges suitable for automated feeding. Coating microstructure analysis confirmed aluminum-rich dendrites providing barrier protection. Material certificates showed carbon content at 0.04%, excellent for welding. Camber correction reduced deviation to 1.5mm per 2 meters. Delivered in 14 days including custom processing. Exceptional service for cold climate applications.

Carlos Silva

Brazil

verified purchases

2025-09-28

Acceptable Quality with Delivery Delay Resolved
Ordered 18 tons of ZAM steel coil (1.2mm thickness, Z18 coating, 1100mm width) for agricultural equipment manufacturing. Initial shipment delayed by 12 days due to port congestion, but supplier proactively communicated and offered 5% discount compensation. Material quality was acceptable - coating weight measured at 178 g/m² (within Z18 range of 160-200 g/m²). Mechanical properties met our requirements with yield strength at 285 MPa. Supplier resolved the logistics issue professionally. Would consider ordering again for non-urgent projects.

William Taylor

Australia

verified purchases

2025-10-15

Solid Performance for Marine Equipment Enclosures
Purchased 12 tons of ZAM coated steel (0.7mm thickness, Z18 coating) for marine electrical cabinet production. Coating provided better corrosion resistance than our previous hot-dip galvanized supplier. Roll-forming operations went smoothly with minimal springback. Documentation package was complete with SGS inspection report. Price point was reasonable compared to three other quotes. Only concern was 28-day lead time, slightly longer than quoted 25 days. Material quality justified the wait for coastal zone C5-M applications.

Ahmed Al-Hassan

United Arab Emirates

verified purchases

2025-11-02

Premium ZAM Coils for Desert Climate Applications
Ordered 25 tons of ZAM steel coil (1.0mm substrate, Z27 coating weight, 1200mm width) for outdoor infrastructure in extreme desert conditions. The 270 g/m² coating mass provides excellent protection against sandstorm abrasion and high UV exposure. Mill test certificates traceable to heat numbers included chemical composition showing 96.2% zinc base. Material arrived with uniform coating thickness variation of ±12% across width. Supplier's application engineers recommended Z27 for our ISO 12944 C4 environment. Delivered in 19 days to Jebel Ali port.

Wei Chen

Singapore

verified purchases

2025-11-20

Reliable ZAM Supplier for Southeast Asia Projects
Third consecutive order - 20 tons of ZAM coil (0.6mm thickness, Z12 coating, 800mm width) for HVAC ductwork manufacturing. Coating mass measured at 125 g/m² per side, within specification range. X-ray fluorescence analysis reports provided for each coil. Protective film application prevented surface scratches during tropical shipping. Technical data sheets included corrosion rate comparison showing 10x improvement over standard galvanized steel. Consistent quality across all three orders. Lead time maintained at 16 days.

Hans Mueller

Germany

verified purchases

2025-12-08

Good Quality ZAM Steel at Competitive Pricing
Purchased 15 tons of ZAM steel coil (1.5mm thickness, Z18 coating) for construction panel manufacturing. Material quality met JIS G3302 SGHC standards with good formability. Coating adhesion passed 180-degree bend test without cracking. Price was 8% lower than European suppliers we compared. Minor issue with edge burrs on two coils but supplier arranged rework within 48 hours. Overall good value for industrial roofing applications. Delivery took 25 days.

James Wilson

United Kingdom

verified purchases

2025-12-23

Superior Corrosion Protection for Marine Infrastructure
We specified 32 tons of ZAM coated steel (0.8mm substrate, Z12 coating weight, 1000mm slit width) for coastal electrical enclosures. The zinc-aluminum-magnesium coating demonstrated self-healing properties during fabrication. EN 10204 3.1 certificates confirmed tensile strength at 340 MPa. Technical support team assisted with coating weight selection based on our C5-M corrosivity category. Lead time was 22 days including precision slitting to ±0.3mm tolerance. Highly recommended for harsh marine environments.

Michael Johnson

United States

verified purchases

2026-01-07

Excellent ZAM Coil Performance for Automotive Parts
Ordered 28 tons of ZAM steel coil (1.2mm thickness, Z18 coating, 1250mm width) for our automotive underbody component production. The coating composition was verified at 6.1% aluminum and 3.2% magnesium per mill certificates, exceeding our corrosion requirements. Salt spray testing showed zero red rust after 720 hours per ASTM B117. Material performed exceptionally well in our stamping operations with no coating delamination. Delivery completed in 18 days. This is our second order this year.