Galvanneal is a steel product with a zinc-iron alloy coating on the steel surface, produced by the continuous hot-dipping process. Achieving the required zinc coating thickness for different coating specifications is the result of passing the hot dipped strip through a variable low pressure, high volume air stream, called an "air knife." From here, the strip enters a furnace and the heat converts the zinc coating to the zinc-iron alloy coating. There is no spangle, simply a grey matte appearance.
If produced as Extra Smooth (skin passed or temper rolled), this material can be used for exposed automotive applications.
Qualities Commonly Produced
Commercial Steel – ASTM A653
Forming Steel – ASTM A653
Deep Drawing Steel – ASTM A653
Extra Deep Drawing Steel – ASTM A653
High Strength Deep Drawing Steel
Structural Steels - ASTM A653/A653M – Grade 33 – 50 ksi
High Strength Low Alloy Steels - Grades 50 – 120 ksi
Standard Coating Weights
ASTM ZF001 -- no minimum
ZF75 75 g/m2 minimum triple spot
ZF120 120g/m2 minimum triple spot
40A 40 g/m2 minimum single spot
45A 45 g/m2 minimum single spot
55A 55 g/m2 minimum single spot
45A (nominal) 45 g/m2 target
60A (nominal) g/m2 target
.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 ArcelorMittal Dofasco's Sales Dept for further information on specific product availability.
Typical End Uses
Exposed Automotive Parts, Unexposed Automotive Parts, Decking, Commercial Doors.