...Aluminium Aluminium has many advantages over other materials and is the most widely used metal after steel. The lightweight, flexible but durable design properties of aluminium extrusions allow an enormous...
Aluminium Metal Glossary Ageing , Age Hardening , Precipitation Hardening The second stage in the process (solution treatment and ageing) for those aluminium alloys that respond to heat treatment as a...
Aluminium Metal Glossary Water Staining A residue left on aluminium that has been wet and allowed to dry naturally. This is very difficult to remove and cannot be improved by polishing or anodising. Work...
Aluminium Metal Glossary Lateral Curvature , Edge Curvature The lateral departure, in arc form, of an edge from linear straightness. Lüders Lines Surface marks caused by localised flow that appears on...
Aluminium Metal Glossary Lateral Curvature , Edge Curvature The lateral departure, in arc form, of an edge from linear straightness. Lüders Lines Surface marks caused by localised flow that appears on...
Aluminium Metal Glossary Quenching The rapid cooling a metal or alloy from the solution treatment temperature by contact with a solid, a liquid or a gas to retain the hardening constituents in solid solution....
Aluminium Metal Glossary Back-End Defect A defect found in extruded products due to incorrect extrusion procedures at the mill. Backwards Extrusion , Indirect Extrusion The extrusion method in which there...
Aluminium Metal Glossary Temper Designations There are two systems of letters and digits used, after the alloy designation number, to define and describe the temper of an aluminium alloy. The following...
Aluminium Metal Glossary Hall Heroult Process , Smelting The main process used for the production of Aluminium metal whereby Alumina is dissolved in a salt bath of molten cryolite and subject to an electrolysis...
Aluminium Metal Glossary Natural Ageing The process that can alter the hardness and strength in some alloys after a period of time at ambient (room) temperature. It is caused by the spontaneous precipitation...