ArcelorMittal Dofasco galvanized is produced on continuous hot dip galvanizing lines by passing prepared coils through a bath of molten zinc. There are various styles available – Premier – Minimized Spangle, Premier – Minimized Spangle – Extra Smooth, and Premier – Dual Coat. The zinc coatings on these products help resist corrosion due to the barrier protection and sacrificial characteristics of the coating. The required zinc coating thickness for different coating specifications is achieved as the result of passing the hot dipped strip through a variable low pressure, high volume air stream, called an "air knife."
Premier - Minimized Spangle
The coating consists of a layer of zinc on top of a very thin layer of a mixture of intermetallic compounds containing iron, aluminium and zinc. The products produced are "spangle" free. The surface has a bright appearance and is normally intended for plain unpainted construction applications or unexposed appliance/ automotive applications.
Premier - Minimized Spangle - Extra Smooth
This product is skin passed or temper rolled after coating to impart a uniform matte surface appearance. It is developed for use on painted construction applications and semi-exposed automotive applications requiring an improved surface appearance.
ExtragalTM is an exposed, hot dip galvanized coated, cost-effective alternative to Electrogalvanized steel for automotive outer body panels. ExtragalTM is made in our state-of-the-art DoSol Galva (DSG) line.
ArcelorMittal Dofasco's Dualcoat is a coated product produced with different coating weight targets on each surface of the sheet. The result is a differentially coated steel with a full coating one side and a lower coating on the other side. There are limitations to the range of differential coating that can be obtained.
Qualities Commonly Produced
Commercial Steel - ASTM A653/A653M
Forming Steel - ASTM A653/A653M
Deep Drawing Steel - ASTM A653/A653M
Extra Deep Drawing Steel - ASTM A653/A653M
Steel Culvert – CSA G401
Structural Steels - ASTM A653/A653M – Grade 33 - 80
High Strength Low Alloy Steels - Grades 50 – 120
Standard Coating Weights
Z001 -- no minimum – Z120 120 g/m2 minimum triple spot
Z180 180 g/m2 minimum triple spot
Z275 275 g/m2 minimum triple spot
Z350 350 g/m2 minimum triple spot
Z450 450 g/m2 minimum triple spot
Z600 600 g/m2 minimum triple spot
Z700 700 g/m2 minimum triple spot
60G 60 g/m2 minimum single spot 70G 70 g/m2 minimum single spot 90G 90 g/m2 minimum single spot 98G 100 g/m2 minimum single spot
.28 mm (.011") to 4.27 mm (.168") thickness
1829 mm (72") maximum width
Various steel grades and qualities may not be available across ArcelorMittal Dofasco's full gauge and width capability. Please contact Dofasco Sales Dept for further information on specific product availability.
Typical End Uses
Exposed Automotive Parts, Unexposed Automotive Parts, Culvert, Roofing, Cladding and Siding, Ceiling Grid Systems, Ducting, Electrical Boxes, Light Steel Framing, Pools (Above Ground/Inground), Building Components and Accessories, Major Appliances, Grain Bins, Truss Plates, Garage Doors, Water Heaters, Industrial Packaging.