Glossary

Aluminum is our passion. And our knowledge! Benefit from our knowledge.

Many information can be found in aluminum-manual, which is being completely revised and will soon be available. In the meantime, please use our glossary for useful word explanations.

Cast alloy

Alloy, which is intended mainly for the production of castings.

Cast skin

Very thin, outer edge of a casting; is created during solidification of alloys intended mainly for the production of castings.

Casting carousel

Circular arrangement of casting dies or moulds around a casting machine, enabling a continuous casting process.

Casting furnaces

Here is where the melt settles.

Casting tape

Long semi-finished product which is produced by casting between circumferential bands or rotary casting rolls and coiled into coins.

Casting wheel

Wheel having on its circumference moulds for receiving molten metal; the melt is solidified during rotation and extracted as an endless strand laterally from the wheel.

Casting-rolling strip

Semi-finished product with rectangular cross section.

Chinese script

Branched form of intermetallic compounds in aluminium such as Mg2Si, Al6Mn, Al3Fe, that resemble Chinese characters.

Chromate treatment

Chemical process where a chromium compound solution is applied to a metal surface, to form a protective chemical coating before paint finishing.

Circular blank

Circular sheet metal or plate cuttings.

Clay

Oxygen compound of aluminium – Al2O3.

Coil

Coiled metal strip, refers to wound metal strip or wire.

Cold rolling

Process by which the sheet metal is introduced between rollers and then compressed below its recrystallization temperature.

Cold shut

Casting errors observed at the surface; when two fronts of liquid aluminium do not fuse properly in the mould cavity, leaving a weak spot.

Cold-rolled strip

Intermediate product produced by cold rolling that is rolled up to coils.

Compress

Relative length change of a body subjected to compressive forces, major step in the open-die forging process.

Conductivity, electrical

Property that describes the ability of a material to conduct electric current.

Contact corrosion

Gradual destruction of a metallic area that is attributable to a corrosion element, consisting of a metal/metal pairing or a metal/electron-conducting solid body.

Continuous casting

Continuous process for the production of semi-finished products.

Continuous rolling mill

Roll stands arranged in a row where the guided strip is produced in its final thickness in a single run without changing pressures.

Convection

Important operation in the heat treatment of aluminium; prerequisite for this type of heat transfer is strong air movement in the furnace atmosphere.

Corrosion

Selective destruction of grain boundary areas with low dissolution potential.

Creep

Slow deformation of materials at elevated temperature, also occurs at stresses below the tensile strength or Rp0.2limit; may lead to deformation and cracks.

Creep behaviour

Characterizes the behaviour of material under long-term use at elevated temperature; the time-dependent deformation at elevated temperature and constant stress is determined in creep tests.