Galvannealed Steel

Hengqiao(Shanghai) International Trading LimitedCarries The Following Types Of Galvannealed Steel

Hot vs. Cold Rolled Galvannealed Steel

Hot rolled galvannealed steel is derived from the temperature of the alloy when it is rolled into a sheet. Hot rolled steel is steel that has been heated above its recrystalization point and is pushed between two rollers to meet a certain length and thickness. This allows for the galvannealed steel to be more ductile and flexible. Cold rolled galvannealed steel is the outcome of steel that has been flattened between rollers below its recrystalization temperature, usually at roomtemperature. Cold rolling steel allows for the alloy to be stronger by increasing its strain hardness.

In steel, this is performed by heating the alloy until its glowing, or red-hot, allowing the alloy to correct any would-be weak points and impurities. Eventually the steel is allowed to cool to room temperature in a room of still air.

The most common method of galvanizing is known as the hot-dip method, in which steel or iron is dipped into a molten bath of zinc. This leaves behind a thick layer of zinc which will prevent the rusting of the surrounded alloy. It is important to note that the zinc layer will not hold up if left in an environment with corrosive substances, such as salt water, and will eventually leave the steel or iron vulnerable to oxidization.