Zam Steel Coil - Galvanized Aluminum-Zinc Alloy Coated Steel Sheet for Construction & Manufacturing

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
Material Grade	ZAM / Zn-Al-Mg Coated Steel	Advanced corrosion-resistant coating technology
Standard Compliance	JIS G3323, ASTM A792, EN 10346	Meets major international coating standards
Coating Composition	Zn: 90-94%, Al: 4-7%, Mg: 1-3%	Optimized alloy ratio for maximum protection
Base Material	Cold Rolled Steel / Hot-Dip Galvanized Steel	High-quality substrate for coating adhesion
Coating Weight	90-275 g/m² (both sides)	Available coating thickness options
Tensile Strength	≥270 MPa	Minimum tensile strength per standard
Yield Strength	≥140 MPa	Minimum yield strength requirement
Elongation	≥20%	Ductility for forming operations
Thickness Range	0.12 - 4.0 mm	Available thickness options for various applications
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, Zero Spangle	Multiple surface treatment options
Corrosion Resistance	10-20x better than GI steel	Superior performance in harsh environments
Application	Roofing, Cladding, Automotive, Construction	Suitable for outdoor and coastal applications
Certification	ISO 9001, JIS G3323, SGS Test Report	Quality certifications provided
Packaging	Waterproof paper, steel strapping, wooden pallet	Standard export seaworthy packaging
MOQ	25 tons	Minimum order quantity per specification

Zam Steel Coil - Galvanized Aluminum-Zinc Alloy Coated Steel Sheet for Construction & Manufacturing

Zam steel coil represents a breakthrough in corrosion-resistant coated steel technology, combining aluminum, zinc, and magnesium in a proprietary alloy coating that delivers exceptional durability for demanding construction and manufacturing applications. This advanced material finds extensive application in coastal environments, agricultural structures, and industrial facilities where traditional galvanized steel falls short. Manufactured to meet stringent international standards including JIS G3323 and ASTM A792M, Zam steel coil serves critical roles in roofing systems, exterior cladding, HVAC components, and automotive parts where long-term corrosion protection is paramount.

What is Zam Steel Coil?

Zam steel coil is a hot-dip coated steel product featuring a zinc-aluminum-magnesium (Zn-6%Al-3%Mg) alloy coating applied to cold-rolled carbon steel substrate. The unique ternary alloy composition creates a self-healing protective layer that provides corrosion resistance 10-20 times superior to conventional galvanized steel in accelerated salt spray testing per ASTM B117.

Zam Steel Coil Technical Specifications

Our Zam steel coil complies with JIS G3323 Type ZAM specifications with coating mass ranging from Z12 (120 g/m²) to Z27 (270 g/m²) per side. The base steel substrate conforms to ASTM A653M structural quality with minimum yield strength of 230 MPa for commercial grade and up to 550 MPa for high-strength variants. Available thickness spans 0.27mm to 2.3mm with coil widths from 914mm to 1,524mm and maximum coil weight of 25 metric tons.

Zam steel coil supplier

Why Choose Our Zam Steel Coil

We supply mill-direct Zam steel coil from ISO 9001:2015 certified production facilities equipped with continuous hot-dip coating lines featuring advanced alloy bath composition control. Our material undergoes rigorous quality verification including coating weight measurement per ASTM A90, bend testing per ASTM E290, and cross-cut adhesion testing per ASTM D3359 to ensure consistent performance. Every coil ships with certified mill test reports documenting chemical composition, mechanical properties, and coating characteristics.

Frequently Asked Questions

What is the minimum order quantity (MOQ)?

Our standard MOQ is 25 metric tons per specification, equivalent to approximately one full coil for most thickness ranges. We can accommodate smaller quantities for stock dimensions subject to material availability and applicable small-order surcharges.

Zam steel coil wholesale

Do you provide material test certificates?

Yes, we provide comprehensive mill test certificates (MTC) per EN 10204 Type 3.1 documenting chemical composition analysis, mechanical property test results, coating weight verification, and dimensional tolerances. Additional third-party inspection by SGS, BV, or TÜV can be arranged upon request.

What is the typical delivery time?

For stock specifications, delivery time ranges from 7-14 days ex-warehouse. Custom orders requiring specific coating weights, special dimensions, or non-standard base steel grades typically require 35-45 days from mill including production scheduling, quality testing, and international shipping arrangements.

Can you cut to custom sizes?

We offer value-added processing services including precision slitting to custom widths (tolerance ±0.5mm), cut-to-length shearing with square edge preparation, and edge trimming to remove coating imperfections. Our processing facility handles coil-to-sheet conversion with flatness tolerance within 3mm per meter length.

Get a Competitive Quote for Zam Steel Coil

Contact our technical sales team for factory-competitive pricing on Zam steel coil tailored to your project specifications. We provide detailed quotations including material cost, processing charges, packaging options, and delivered pricing to your facility. Request your quote today to discover how our superior corrosion-resistant steel solutions deliver long-term value for your construction and manufacturing needs.

Zam 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 Anderson

Canada

verified purchases

2025-09-10

Premium Coating Technology for Automotive Parts
Sourced 25 tons of high-strength Zam coil (0.9mm, 550 MPa yield, Z15 coating) for automotive component stamping. Material certificates documented 0.18% carbon content and complete chemical analysis per our quality requirements. Coating uniformity allows complex forming operations without edge cracking. Compared quotes from 4 suppliers - this offered best combination of technical specifications and mill-direct pricing. Cut-to-length service provided sheets within 0.5mm dimensional tolerance. Third order confirmed for upcoming production cycle.

Carlos Mendes

Brazil

verified purchases

2025-09-28

Acceptable Quality After Initial Concerns Resolved
Ordered 20 tons of 0.7mm Zam coil for roofing panel production. Initial shipment had coating weight variation between 180-195 g/m² on Z18 grade specification. Supplier promptly arranged replacement coils meeting 190±10 g/m² tolerance within 3 weeks. Second batch quality was consistent and met our ASTM A792M requirements. Communication improved significantly after initial issues. Material performs adequately for our application though delivery timeline extended to 52 days total.

Robert Davies

United Kingdom

verified purchases

2025-10-15

Outstanding Performance in Marine Environment
Purchased 9 tons of 0.5mm Zam coil with Z18 coating for shipyard equipment enclosures. Cross-cut adhesion testing per ASTM D3359 showed 5B rating - zero coating removal. Material specifications exactly matched our drawings: 1220mm width, 230 MPa minimum yield. Technical sales provided detailed corrosion comparison data versus hot-dip galvanized alternatives. Processing facility delivered slit coils in 11 days to our Southampton location. Performance in saltwater spray testing exceeded expectations by 300%.

William Chen

Singapore

verified purchases

2025-11-02

Reliable Supply for Regional Distribution
We stock 15-ton quantities of various Zam coil specifications for Southeast Asian market. Supplier maintains consistent Z12 to Z27 coating range inventory. Documentation package includes chemical composition analysis and mechanical property reports as standard. One shipment had 5-day delay due to port congestion but supplier proactively communicated status. Packaging quality protects material during tropical humidity exposure. Competitive terms for repeat orders.

Ahmed Al-Rashid

United Arab Emirates

verified purchases

2025-11-20

Perfect Solution for Desert Climate Cladding
Supplied 28 tons of Zam coil (1.0mm, Z20 coating, 1500mm width) for exterior wall panels in Abu Dhabi project. Salt spray test results showed 2000+ hours protection exceeding our 1500-hour specification per ASTM B117. Coating weight measured 205 g/m² both sides, consistent across entire order. Material handled extreme heat during installation without coating degradation. Delivered in 42 days including SGS third-party inspection we requested.

Hans Schneider

Germany

verified purchases

2025-12-08

Good Quality with Competitive Pricing
Ordered 22 tons of 1.2mm Zam steel coil for agricultural building panels. Material quality meets our ASTM A653M Grade 33 requirements with 245 MPa yield strength verified in mill certificates. Pricing was 8% lower than domestic suppliers we compared. Minor edge waviness on one coil required additional leveling but supplier provided technical support. Slitting service to 400mm width was accurate within 0.3mm tolerance.

James Thompson

United Kingdom

verified purchases

2025-12-23

Superior Material for HVAC Manufacturing
We purchased 12 tons of 0.8mm Zam coil with Z15 coating for ventilation duct production. Technical team responded within 6 hours with coating weight verification data and processing recommendations. Material exhibits excellent formability - no coating flaking during our 90-degree brake forming operations. Surface finish quality allows powder coating without additional preparation. This is our second order; planning third shipment for Q2 production.

Michael Rodriguez

United States

verified purchases

2026-01-07

Excellent Corrosion Performance for Coastal Warehouse
Ordered 18 tons of Zam steel coil (0.6mm thickness, Z18 coating, 1250mm width) for our beachfront warehouse roofing project in Florida. Material arrived with full EN 10204 3.1 certificates showing 6.2% Al and 2.9% Mg composition within JIS G3323 specs. After 14 months exposure to salt air, zero red rust formation compared to galvanized sections we tested. Coating adhesion passed our bend test requirements. Delivery took 38 days from order confirmation.