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Glossary about aluminium




A silver, light, corrosion-resistant, very workable metal. The third most common element after oxygen and silicon.

First discovered at the end of the 19th century, aluminium is today, along with steel, the most important utility metal in almost all areas of application in technology.

In nature, aluminium only occurs as a compound. The basis for aluminium extraction is bauxite, a weathering product of limestone and silicate rock, whose high Al2O3 (aluminium oxide) content is often over 50%.

Worldwide, more than 25 million tonnes of aluminium are processed annually - of this, more than 20 million tonnes are processed in the western world. The steadily growing demand in the western industrialised countries, especially in Europe, is higher than their own production - the difference has to be covered by global imports.

By nature, aluminium is characterised by low strength. By adding appropriate alloying components, considerably higher strengths - with relatively high elongation and elasticity limits - are achieved. A distinction is made between naturally hard and age-hardening alloyed materials.

The low specific weight of aluminium offers a high potential for cost savings in the area of all movement processes, transport, manufacturing, assembly and maintenance.

AlMgSi0,5 / EN AW 6060

AlMgSi0,5 / EN AW 6060 – 130 – 245 N/mm2

ist der am häufigsten verwendete Werkstoff und zählt zu den sogenannten leichtpreßbaren Legierungen.
Diese Legierung hebt sich hervor durch

  • besonders gute Eloxalqualität,
  • Meerwasser- und damit Korrosionsbeständigkeit,
  • gute Schweißbarkeit,
  • sehr gute Biegefähigkeit – bei entsprechender Festigkeit.

Für diesen Werkstoff ist die DIN 17615 – Präzisionsprofile aus AlMgSi0,5 – relevant. Sie trägt der recht guten Verformbarkeit
und den dadurch möglichen engen Toleranzen und dünnen Wanddicken gegenüber anderen Werkstoffen Rechnung.

Architektur, Maschinenbau, Möbel, Fahrzeugbau, Elektrotechnik

AlMgSi0,7 / EN AW 6005A

AlMgSi0,7 / EN AW 6005A – 270 N/mm2

Ähnliche Eigenschaften wie AlMgSi 0,5, jedoch höhere Festigkeiten – bis 270 N/mm2 – für entsprechende Einsatzzwecke.

Mechanisch beanspruchte Bauelemente

AlMgSi1 / EN AW 6082

AlMgSi1 / EN AW 6082 – 205 bis 310 N/mm2


  • mit hohen Festigkeitswerten
  • gut schweißbar
  • meerwasser- und damit korrosionsbeständig
  • technisch eloxierfähig – ohne dekorativen Anspruch

Anwendungen: Mechanisch hoch beanspruchte Bauelemente

AlCuMgPb / EN AW 2007

AlCuMgPb / EN AW 2007 – 340 bis 370 N/mm2

Naturharter Werkstoff – insbesondere geeignet zur zerspanenden Bearbeitung (kurzer Span durch Pb-Anteil).
Anwendungen: Bohr- und Dreh – Werkstoff

AlZn4,5Mg1 / EN AW 7020

AlZn4,5Mg1 / EN AW 7020 – bis 350 N/mm2

Schwer verpreßbarer Konstruktionswerkstoff mit ausgezeichneter Schweißbarkeit.
Anwendungen: hoch beanspruchte Schweißkonstruktionen insbesondere im Bau und Maschinenbau.

AlZnMgCu1,5 / EN AW 7075

AlZnMgCu1,5 / EN AW 7075 – 500 bis 530 N/mm2

Der Werkstoff für höchste Belastungen und Beanspruchungen (sehr geringe Korrosionsbeständigkeit).
Anwendungen: Konstruktionen mit sehr hoher Beanspruchung im Flugzeug-, Fahrzeug- und Maschinenbau.


Al99,5 / EN AW 1050

Al99,5 / EN AW 1050 – H0 bis H28

Naturharter Werkstoff, vorwiegend für Walzprodukte
Anwendungen: Metallbau


AlMg1 / EN AW 5005

AlMg1 / EN AW 5005 – H0 bis H38

Naturharter Werkstoff, meerwasserbeständig, gut schweißbar, gut eloxierfähig, für dekorative Oberflächen.
Anwendungen: Fassaden-, Metall- und Fahrzeugbau, Verpackung


AlMg3 / EN AW 5754

AlMg3 / EN AW 5754 – bis 180 N/mm2

Naturharter Werkstoff für Walzprodukte und einfache Profilquerschnitte

  • mit sehr guter Korrosionsbeständigkeit,
  • gut schweißbar,
  • gute Eloxalqualität.

Anwendungen: Architektur, Maschinenbau und Möbelindustrie


AlMg4,5Mn / EN AW 5083

AlMg4,5Mn / EN AW 5083 – H0 bis H36

Naturharter Werkstoff, meerwasserbeständig, gut schweißbar, hervorragend geeignet für statisch beanspruchte Konstruktionen.
Anwendungen: Bedeutende Legierung für den Schiffbau, des weiteren im Maschinen-, Fahrzeug- und Apparatebau, Bauwesen


Other alloys

Other alloys - especially from the hot and cold rolling range on request,
including: 1100, 1200, 1230, 1235, 3003, 3005, 3103, 3105, 5049, 8006, 8009, 8011, 8079

Harmlessness to health

Harmlessness to health

According to current knowledge, aluminum is completely harmless to health.

C - J

Cold and hot formability

Aluminium has a relatively high resistance to deformation. However, by using the appropriate technical equipment, aluminium, and its alloys in a wide range, can be cold or hot formed well to very well:

  • Rolling
  • Extrusion
  • Forging
  • Casting
  • Drawing extruded round material to tight tolerances
Good conductivity for electricity and heat

Aluminium has a high electrical conductivity (38 to approx. 34 m/Ohm mm² for pure aluminium). In practice, pure aluminium and E-AlMgSi materials are mainly used for electrical conductors. At approx. 80 to 230 W/m o K, the thermal conductivity is about four times that of iron.

Corrosion resistance

Aluminium forms a natural oxide protective layer on contact with air. After each removal, this layer renews itself, resulting in excellent resistance to atmospheric corrosion exposure. Pure and ultra-pure aluminium, including the copper-free alloys, are resistant to very many media. They are therefore used extensively in construction, the chemical industry, the food and luxury food industry and in vehicle construction.

However, the materials with the highest strengths - over 500 N/mm² - show very limited resistance. This is taken into account by constructive measures.

Further processing up to assembly
Everything from a single source - from machining to the ready-to-install product

Based on this philosophy, the mechanical processing of profiles and sheet metal is also part of our range of services. In our own plants as well as in cooperation with our long-standing partners, we can offer the following processing stages:

  • Mechanical processing
  • Sawing
  • Drilling
  • Welding
  • Bending
  • Blasting
  • Vibratory finishing
  • Grinding
  • Mounting
  • NC machining up to 6,000 mm
Joining techniques
Connection techniques

Almost all common connection techniques can be used with aluminium and its alloys.

M - S


Aluminium is non-magnetic, which is important in electrical engineering, electronics and mechanical engineering.


In technology, recycling means the reuse of scrap and used finished products as secondary raw materials for the manufacture of new products. More than 50% of the aluminium raw materials used are obtained in this way - without any loss of quality - due to appropriate processes.

Only 5% of the energy required to extract primary aluminium is needed for the recycling process. Among the many possible materials, aluminium is often the most ecologically and economically optimal solution.

High reflectivity

Aluminium surfaces naturally have a high reflectivity for light and heat. By means of various surface treatments, the degrees of reflection and absorption can be influenced within wide limits.

Specific density

At 2,7 to 2,9 g/cm3 – depending on the alloy components - the specific weight is only 1/3 of that of steel.


Appropriate standardisation is the instrument of order for all technical -scientific and personal life. It is an integral part of the economic, social and legal order.

In the course of the common European market, the national standards are gradually being replaced by the new EN standards.

In future, the national identity will only be maintained by national cover sheets - e.g. with the title DIN-EN for Germany.

For the most important semi-finished products in all business areas, alphametall has already completed this conversion. We will change offers and order confirmations accordingly after release of the corresponding standards.

We practically only see nominal changes compared to the German DIN standards. Only minor adjustments have been necessary and possible.

In the following overview, we have compared the new DIN EN standards with the previous DIN standards for your convenience:

Standards overview aluminium and aluminium alloys
17007 515 Designation of material conditions
Hot work tool steels for extrusion dies
1700 573-1 Chemical composition and shape of wrought products.
Part 1: Numerical designation system
1712, 1713, 1725 EN 573-2 Chemical composition and shape of wrought products.
Part 2: Designation system with chemical symbols
1712, 1713, 1725 EN 573-3 Chemical composition and shape of wrought products.
Part 3: Designation system with chemical symbols
NN EN 573-4 Chemical composition and shape of wrought products.
Part 4: Designation system with chemical symbols
NN EN 603-2 Forgings and wrought and cast forging stock
Part 1: Technical conditions for inspection and delivery
NN EN 603-3 Forgings and wrought and cast forging stock
Part 3: Tolerances on dimensions and form
1746-2, 1747-2 EN 754-1 Drawn rods and tubes
Part 1: Technical conditions for inspection and delivery
1746-2, 1747-1 EN 754-2 Drawn rods and tubes
Part 2: Mechanical properties
1798 EN 754-3 Drawn rods and tubes
Part 3: Round bars - Tolerances on dimensions and form
1796 EN 754-4 Drawn rods and tubes
Part 3: Square bars - Tolerances on dimensions and form
1769 EN 754-5 Drawn rods and tubes
Part 3: Rectangular bars - Tolerances on dimensions and form
1797 EN 754-6 Drawn rods and tubes
Part 3: Hexagonal bars - Tolerances on dimensions and form
  EN 755-1 Extruded rod/bar, tube and profiles
Part 1: Technical conditions for inspection and delivery
1746, 1747, 1748 EN 755-2 Extruded rod/bar, tube and profiles
Part 2: Mechanical properties
  EN 755-3 Extruded rod/bar, tube and profiles
Part 3: Round bars, tolerances on dimensions and form
59700 EN 755-4 Extruded rod/bar, tube and profiles
Part 4: Square bars - Tolerances on dimensions and form
1770 EN 755-5 Extruded rod/bar, tube and profiles
Part 5: Rectangular bars - Tolerances on dimensions and form
59701 EN 755-6 Extruded rod/bar, tube and profiles
Part 4: Hexagonal bars - Tolerances on dimensions and form
  EN 755-8 Extruded rod/bar, tube and profiles
Part 8: Porthole tubes, tolerances on dimensions and form
1790-2 EN 1301-1 Drawn wires
Part 1: Technical conditions for inspection and delivery
1790-1 EN 1301-2 Drawn wires
Part 1: Mechanical properties
  EN 1301-3 Drawn wires
Part 1: Tolerances on dimensions
DIN 1748 1-4 EN 755-2 EN 755-1
EN 755-9
Extruded aluminium profiles
Part 1: Properties
Part 2: Technical delivery conditions
Part 3: Design
Part 4: Permissible deviations
DIN 1771   Aluminium and wrought aluminium alloy extruded, angles; Dimensions, Static values
ISO 2768-1 DIN 6784   General tolerances Tolerances for length and angle dimensions without individual tolerance entry Workpiece edges
DIN 9713   U-profiles made of aluminium and wrought aluminium alloys, pressed, dimensions, static values
DIN 9714   T-profiles made of aluminium and wrought aluminium alloys, pressed, dimensions, static values
DIN 17611   Anodically oxidised semi-finished products made of aluminium and wrought aluminium alloys with layer thicknesses of at least 10 µm
DIN 176151-3 EN 12020-1
EN 12020-2
Precision profiles made of AlMgSi 0,5
Part 1: Technical delivery conditions
Part 2: Design basics
Part 3: Tolerances

Date: July 2001

All standards can be obtained from Beuth Verlag Berlin at

Of course, we are also happy to help you with any open questions in this regard.
Please direct your specific question to

Surface finishing

Aluminium offers the optimum surface finishing option for almost every application.

  • Eloxal decorative surfaces - also coloured technical surfaces - abrasion resistance
  • Powder coating in numerous RAL colours
  • Wet paint finish in numerous RAL colours
  • Laminating decorative foils
  • Polishing - mechanical and chemical
  • Grinding and brushing etc.
Surface finishing using the anodising process

Our strength is particularly evident in the surface-finished version:

We offer anodising according to DIN 17611 for interior and exterior applications in the common anodising shades. Our standard coating thickness for interior applications is 10 - 12 µm. Please select the pre-treatment required for your application from Table 1. In table 2 you can find the standard anodised colours. Of course, we're also happy to supply you with special colours.

Table 1 - Surface finish according to DIN 17611 / possible pre-treatments
E0 Without pre-treatment, anodised and compacted Die marks, scratches, grinding grooves or other surface defects remain visible Subordinate surfaces that are not in the field
of vision
E1 Ground, anodised and compacted Even, matt-looking surface, small drawing marks or scratches are eliminated Decorative surfaces with clearly aligned structure
E2 Brushed, anodised and compacted Even, bright surface, drawing grooves, scratches, filing marks only partially removed Matt shiny surfaces with delicate structure
E3 Polished, anodised and compacted Glossy surface, drawing grooves, scratches, filing marks are only partially removed Application preferably indoors, easy to clean,
suitable for all colours
E6 Chemically pre-treated, anodised and compacted Matt, rough surface. Drawing grooves, scratches, file marks partially levelled.
Material-related changes in surface appearance are not always avoidable.
Inexpensive, suitable especially for dark
Tabelle 2 – Oberflächenbeschaffenheit nach DIN 17611 / mögliche Vorbehandlungen
E6/C- 0 (EV1) colourless, natural 5 - 20 µm EURAS standard
E6/C-31 light bronze 5 - 20 µm EURAS standard
E6/C-32 (EV3) light bronze 5 - 20 µm EURAS standard
E6/C-33 medium bronze 5 - 20 µm EURAS standard
E6/C-34 dark bronze 5 - 20 µm EURAS standard
E6/C-35 (EV6) black 5 - 20 µm EURAS standard
Surface finishing using the laminating process

Lamination is the process of applying a foil to the aluminium surface. Wood decors, even real wood decors, are possible.

Surface finishing in powder coating process
Surface finishing in powder coating process according to GSB - guidelines:

in all standard RAL colours

In the powder coating process, the colour powder is applied electrostatically and then baked in at temperatures of approx. 180º C. The colour is then applied to the surface. The coloured plastic coating results in a very resistant and durable surface finish that retains its decorative appearance even under adverse environmental influences.

alpha aluminium GmbH
Rennweg 97
D-56626 Andernach

T +49 (0) 2632 98780-0
F +49 (0) 2632 98780-97

  © alpha aluminium GmbH


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