I - Aluminium glossary

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IACS

IACS stands for International Annealed Copper Standard. This is a standardised value of electric conductivity for the purpose of comparing different...

IBAN

International Bank Account Number. This is an internationally standardised account number comprising the ISO country code (two letters), an error-...

Indirect extrusion

During indirect extrusion, the extrusion stem presses the die against a billet in the container. The billet therefore does not undergo any movement.

Indirect impact extrusion

Indirect impact extrusion is a form of cold impact extrusion. The extrusion stem and the die form a unit as a so-called hollow stem. During the...

Indirect impact extrusion of cup-shaped sections

Indirect impact extrusion of cup-shaped sections is a form of cold impact extrusion. In this process, as is the case with direct impact extrusion of...

Indirect impact extrusion of hollow shapes

Indirect impact extrusion of hollow shapes is a form of cold impact extrusion. A blank is made into a shell with a certain wall thickness. The...

Induction furnace

The principle of an induction furnace is that an alternating current in the furnace creates eddy currents that in turn heat the molten aluminium. The...

Ingot for casting

An ingot for casting is aluminium that has been cast into a simple shape. Ingots for casting are intended for remelting and are then processed into...

Inhibitors

The addition of so-called inhibitors provides an alternative to the commonly used method of surface treatment to protect materials against the effect...

Integral profiles

Integral profiles are multifunction profiles. In other words, they are individual components that fulfil several functions that would otherwise only...

Intercrystalline / intergranular corrosion

With intercrystalline corrosion there is preferential attack of the areas close to the grain boundaries. Such corrosive attack leads to a weakening...

Intermediate annealing

Intermediate annealing involves reheating a metal during a metalworking process. With cold rolling, for example, it might be necessary to carry out...

Iron

Iron is the fourth most abundant element in the earth’s crust as well as being the most important ‘heavy’ metal. It is hard, ductile and highly...

Isothermal extrusion

Isothermal extrusion means that the temperature of the material is kept constant during the whole of the extrusion process over the whole length of...