Galvannealing
Galvannealing is the outcome of combining the annealing and galvanizing processes in order to produce a specialized coating on steel. The process of galvanization is performed via hot-dipping and instantaneous annealing, which produces a matte gray finish.
Galvannealed steel is a steel that is coated in a combination of zinc and iron. This steel is most popular in car manufacturing, although it can be applied in various industries, such as ships and structure construction.
| I.D | O.D | WEIGHT | GAUGE | WIDTH | MAX/SU | I.D. | O.D. | |
|---|---|---|---|---|---|---|---|---|
| LINE | MIN/MAX | MIN/MAX | MAX | MIN/MAX | MIN/MAX | WIDTH | MIN/MAX | MIN/MAX |
| GALV | 20″/24″ | 38″/72″ | 47,500# | .060/.250 | 24″/48″ | 48″ | 24″ | 38″/72″ |
The Process
The Process
Galvannealed is a zinc-iron alloy product, where the base metal is coated by the hot-dip process, then heated to induce alloying between the molten zinc coating and the steel. The resulting finish is a dull matte surface. Galvannealed steel is conducive to welding and the surface is excellent for paint adhesion.
