Alloys are formed by mixing aluminium ingots in a furnace at temperatures above 620° C with other elements such as magnesium, silicon, copper etc.

In addition there are several other specialised aerospace and casting alloys.

At Kaye Aluminium alloys from the 6000 alloy series are used. This group of alloys uses a combination of magnesium and silicon to render them heat-treatable. These alloys find their greatest strength, combined with good corrosion resistance, ease of formability and excellent anodising ability. These properties make the 6000 series alloy group ideal for building structure applications. (see also section on ALLOYS AND PROPERTIES )

The second digit in the four-digit code indicates any modifications to the original alloy. If this digit is zero, no modifications have been made. The last two digits identify the alloys in the group.