Explanatory Dictionary of rolled aluminum

Glossary of rolled aluminum

aluminum (or aluminum – USA)

Unalloyed aluminum or aluminum alloy

unalloyed aluminum
unalloyed aluminium

Aluminum without additives of alloying elements with an aluminum content of at least 99,00 %. Unalloyed aluminum is often referred to simply as aluminum or technical aluminum. In this case, the term "aluminum" does not include aluminum alloys..

Pure aluminum
refined aluminium

High purity unalloyed aluminum - no less aluminum 99,950 %. Received by special metallurgical treatments.

Primary aluminum
primary aluminium

unalloyed aluminum, which is produced directly from bauxite, usually by electrolysis, and with an aluminum content of at least 99,7 %.


Foundry production, intended for remelting or as an initial billet for hot or cold forming processes - rolling, pressing (extrusion), drawing, shoeing.

Pressure treatment

Process, in which a solid metal is converted into a given shape without changing its state and mass. For aluminum, forming includes rolling, pressing (extrusion), forging, stamping.

Hot forming
hot working

Metal forming by pressure after its preheating. During hot working, work hardening may or may not occur (work hardening, hardening).

Cold forming
cold working

Metal forming without preliminary heating.

Metal products (not foundry)
wrought product

Metal products, which has been hot or cold formed. In the aluminum industry, it mainly includes rolled aluminum and forgings..

semi-finished product

Products, which has undergone a certain processing and which is intended for the further manufacture of finished products. Semi-finished products include products, which was produced both by pressure treatment methods, and casting.

rental of

Processing of metals by pressure in the gap between two rotating cylinders (rolls).


Process, in which the material is heated to an elevated temperature before starting the first pressure treatment, for example, rolling. In some cases, preheating can be combined with homogenization.

Hot rolling
hot rolling

Rolling metal after preheating. Hot rolling is performed to improve the efficiency of the rolling process.. Surface quality and dimensional tolerances of hot rolled metal are usually lower, than cold rolled metal.

Cold rolling
cold rolling

Rolling metal without preliminary heating.

Flat rolled
flat rolled product

Rolled products with constant thickness.

Extrusion (pressing)

Process, in which the workpiece in the container is squeezed out through the hole in the die. In the Russian-language technical literature, the more familiar equivalent term is "pressing".

compression molding
direct extrusion

Pressing (extrusion) process with relative movement between the workpiece and the container.

reverse pressing
indirect extrusion

Pressing (extrusion) process without relative movement between the workpiece and the container.

profile (shape, section)

Metal products with length, which is much more, than the dimensions of its cross-section and which is not a sheet, plate (thick sheet), round or rectangular bar, wire or foil.

solid profile
solid profile

Profile, in which the cross section does not contain cavities

The hollow profile
hollow profile

Profile, in which the cross section has one or more cavities.

High precision profile
precision profile

Profile, which has special requirements for shape and size tolerances.

Round nrutok
rod (round bar)

Solid bars with circular cross-section, whose length is much longer, than its diameter. Usually the minimum diameter of a round bar is 10 mm. With a smaller diameter it is called a wire. Usually, supplied in straight sections.


Continuous rolling, whose length is much longer, than the dimensions of its cross-section. The cross section is in the form of a square or rectangle with sharp or rounded corners, or a regular hexagon. Usually, supplied in straight sections, when delivered in coils called "wire". The minimum size between parallel sides is usually not less than 10 mm, otherwise considered "wire"


Hollow product with the same cross-section with one or more closed cavities and the same wall thickness. Supplied in straight sections or in coils. Cross section can be circle, oval, square, rectangle, equilateral triangle or regular hexagon. Corners can be rounded. Internal and external cross-sections are concentric, have the same shape and orientation. Pipes are obtained by pressing (extrusion) or by forming and welding sheet metal (sheets or strips).

Источник: GDA/EAA-Guide: How to order aluminium products according to
EN standards, 2008