ZAM® (Zinc, 6% Aluminum, 3% Magnesium Alloy Coated Steel)

Introduction to ZAM®

Diagram of ZAMŽ makeup - Zinc, Aluminum and Magnesium alloy metal coating

WHEELING-NIPPON STEEL is proud to announce our newest product, ZAM® - branded the "Corrosion protection of the 21st Century". ZAM® is a remarkably superior corrosion-resistant hot-dip Zinc-Aluminum-Magnesium alloy coated steel sheet product. WHEELING-NIPPON STEEL is the first company in the Americas to produce such a product.

This amazing product lasts longer in the most severe environments, provides built in cut edge rust protection, and promotes cost savings through less maintenance.

ZAM® uniquely presents a self healing, ecologically friendly alternative to other conventional metal coatings. Besides the key features listed at rightbelow, ZAM®:

  • exhibits exceptional alkaline resistance - even in direct contact with concrete and mortar
  • is a great substitute for much more costly stainless steel and aluminum

Your post dip batch coated products would be ideal candidates to convert to cost saving ZAM® coated sheet.

ZAM® is produced to ASTM A1046/A1046M Type 1 specifications and is used where the absolute best rust prevention and cut edge protection are needed.

Got Rust? Get ZAM®. You too will be convinced that ZAM® is like no other coated sheet product. Please explore the many technical and comparison studies located on this site under the tabs "About ZAM®", "Technical", and "Applications".

Key Features of ZAM®

  • Longer service life than other coated products
  • Cut edge rust protection - the hallmark feature of ZAM®
  • Thinner coating yet more protection - ecologically friendly
  • Excellent in severe environments - especially coastal and agricultural
  • Eliminates the need for post dip (batch) galvanizing
  • Superior formability due to coating characteristics
  • Cost savings through longer service life and reduced maintenance
  • Bridges the product gap between heavily coated galvanized and costly stainless steel
solar racking is an excellent application for ZAMŽ

ZAM® Applications

Suitable applications for ZAM® include: construction (architectural building panels, perforated panels, metal facades, roofing), automotive, agricultural applications (chicken grow out houses, swine containment, hoop buildings, grain bins, silos, etc.), green house structures, industrial HVAC, cooling towers, solar racking, school bus decking, swimming pool, sign posts, guardrail facades, coastal environments, cable trays, switch boxes, steel decking and framing, sound/wind/snow barriers and many other applications.

Prepainting or color coating ZAM® is regularly done in other markets with very good results and reviews. WHEELING-NIPPON STEEL is currently working with major paint suppliers and construction associations to gain full acceptance of this newly introduced coating in the United States and Canada markets.

Longer lasting grain bins made from corrosion-resistant ZAMŽ.
ZAMŽ is superior to galvanized sheet metal for guardrail use
Chicken grow out houses constructed from long-lasting ZAMŽ

ZAM® Earns Declare Label

Product designers and architects demand a sustainable flat rolled corrosion resistant steel that is friendly to the environment and is healthy, by design, to those that use their products. ZAM®, proudly Made in the USA by Wheeling-Nippon Steel, offers superior corrosion performance, is 100% recyclable and when utilized properly will last the designed life of the structure. ZAM® is Eco-Friendly using less of the earth's resources and outperforms other corrosion resistant flat rolled steels in the most demanding applications.

We are proud that ZAM® earned the Declare label and is included in the product database of the International Living Future Institute.

ZAM® Specifications

MATERIAL THICKNESS 0.014" through 0.130"
MATERIAL WIDTH 24" through 61"
Commercial Steel Deep Drawing Steel
Extra Deep Drawing Steel Forming Steel
HSLA Steel Grades Structural Steel Grades
ZM30 ZM40 ZM50
ZM60 ZM70 ZM75
ZM90 ZM100 ZM115
(Please inquire about any coating weights not listed.)

COIL WEIGHT 10,000 lbs. maximum through 55,000 lbs. maximum
COIL ID 20" and 24"
(upon request)
Chemical Treatment (RoHS Compliant Available)
Acrylic (RoHS Compliant, Please Inquire)


Image showing actual texture of corrosion protection material

click to enlarge

Additional ZAM® Resources

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ZAM® General Brochure

WHEELING-NIPPON STEEL Inc. - ZAMŽ brochure download

Learn more about ZAM®.
Download your brochure now!



Read the article about ZAM® featured in Coil World Magazine's May/June 2014 issue.

Read feature article about ZAMŽ from Coil World Magazine

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