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Glossary
A
Aluminium alloy
Aluminium which contains alloying elements, where aluminium predominates by mass over each of the other elements and where the aluminium content is not greater than 99,00%.
Aluminium scrap
Raw material, destined for trade and industry, mainly consisting of aluminium resulting from the collection and/or recovery of metal that arises as by-product at various production stages; or
products after use to be used for the production of wrought and cast alloys and for other production processes.
Anodization
Anodization is the process of artificially increasing the thickness of the (natural) oxide coating by electrolytic means. This provides extra protection through films that can vary in thickness from a few microns to over 100 µ.
C
Can stock
Sheet or strip used for the fabrication of rigid cans including ends (lids) and tabs by drawing/ironing, pressing or forming operations. Can stock covers can body stock, end (lid) stock and tab stock.
Casting
Product at or near finished shape, formed by solidification of the metal in a mould or a die.
Clad sheet
Sheet consisting of an aluminium core to which a thin layer of aluminium or another metal is metallurgically bonded on one side or on both sides, typically by rolling.
D
Degreasing
Removal of substances from the surface of a product which may negatively affect the subsequent surface treatment, e.g. oil or grease, typically by a suitable organic solvent or an aqueous detergent.
Drawing
Pulling metal through a die in order to reduce or change the cross-section or to work harden the metal.
E
Extruded profile
Profile brought to final dimensions by extruding.
Extrusion (process)
Process in which a billet in a container is forced under pressure through an aperture of a die.
Extrusion press
Machine consisting essentially of a container, a ram or other pressure-applying device, and a die, used for extrusion.
F
Foil
Flat rolled product of rectangular cross-section with uniform thickness equal to or less than 0,20 mm (200 microns).
Foil stock
Reroll stock suitable for further rolling to foil.
Forming
Process by which a metal is transformed into a desired shape without changing its mass.
M
Milling
Machining process in which metal is removed by a revolving multi-edged cutter to provide flat or profile surfaces.
P
Plate
Rolled product that is rectangular in cross section and with thickness not less than 6 mm (in USA not less than 0.250 inch) with sheared or sawn edges.
R
Rolling
Forming of solid metal in a gap between two rotating cylinders. Hot rolling: rolling after preheating. Cold rolling: rolling without preheating.
S
Semi-finished product
Product that has undergone some processing and is supplied for further processing before it is ready for use.
Sheet
Rolled product that is rectangular in cross section with nominal thickness less than 6 mm (in USA less than 0.250 inches [6.3 mm]) but not less than 0,20 mm (in USA greater than 0.006 inches [0.15 mm]) and with slit, sheared or sawed edges.
Structural profile
Profile, rolled or extruded, commonly used for structural purposes such as angles, channels, H-beams, I beams, tees, and zees.
T
Temper
Condition of the metal produced by mechanical and/or thermal processing, typically characterized by a certain structure and specified properties.
Thermal treatment
Heating, holding at elevated temperature and cooling of the solid metal in such a way as to obtain desired metallurgical structure or properties.
U
UBC
Used Beverage Cans, scrap consisting of used aluminium beverage cans.