Galvannealed Steel

ASTM A653

Coating Weights A40 and A60
CS, FS, DDS, EDDS, Types A, B & C
SS Grades 33 – 80
HSLA Grades 40 – 80

Galvannealed steel is created by a hot-dip coating process. The process produces a uniform zinc coating on both sides of the product. Immediately after the hot-dip process, the metal is exposed to a heat treatment that allows the iron from the base metal to further diffuse into the zinc, creating a zinc-iron alloy layer.

This results in the non-spangled finish, unlike galvanized steel. The matte finish makes the material suitable for painting.

To find out which of our locations process and stock galvannealed steel download our line cards.

O'Neal Flat Rolled Metals galvannealed steel coil

O’Neal Flat Rolled Metals Standard Sizes

10 gauge – 24 gauge
36″ – 60″ wide
Coil/Sheet

*Additional sizes & grades available upon request. Some products and services may vary by location.  

Typical uses for Galvannealed Steel

Automobile applications, buses, garage doors, highway signs, truck and trailer components, vending machines, etc.

Formability

Galvannealed sheet can be formed much in the same way and by the same variety of processes as galvanized sheet. However, the zinc-alloy coating on galvannealed sheet is more brittle than the zinc coating of galvanized sheet. As a result, some amount of powdering can appear when the metal is formed.

Paintable

Galvannealed steel is readily paintable