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Galvannealed Coil
Flat Products

Galvannealed Coil

✓ In stock across regional warehouses

Galvannealed Coil (GA Coil) is produced by passing a hot-dip zinc-coated steel strip directly into an inline induction or gas-fired annealing furnace (~500–550°C), causing iron from the steel base to diffuse into the zinc coating. This creates an integrated iron-zinc alloy coating (~9–12% Fe) with a matte grey finish that is spangle-free, harder than pure zinc, and optimal for spot welding and paint adhesion without primer etching. Available in grades IS 277 / IS 513 equivalents, ASTM A653 (ZF coating), and JAC270–590, with coating masses from 60 GSM to 180 GSM, and thicknesses from 0.40 mm to 2.5 mm. Primary mills include JSW Steel, Tata Steel, POSCO, and AM/NS India.

Specifications
HSN 7210
ABBREVIATION GA
INDIAN STANDARDS Non specific standard
BIS GRADES O / D/ DD/ EDD / IFYS230/ YS250/ YS280/ YS300/ YS350/ YS550
Key Industrial Applications
  • Automotive exposed & unexposed panels
  • High-adhesion painted appliance bodies
  • Spot-welded precision assemblies
  • White goods & washing machine drums
  • Switchgear cabinets & electrical panels
  • Heavy-duty construction shuttering
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