Aluminium Specification of Alloys

ALUMINUM SPECIFICATION OF ALLOYS

Aluminium specification of alloys

TYPE OF ALLOY	ALLOYS AVAILABLE	TYPE OF QUALITY	USES
Series 1xxx – Aluminum content at least 99% EN AW 1050	ЕN AW 1050 EN AW 1060 EN AW 1100	Variety of 1st series alloys have a high level of corrosion resistance. They are not suitable for heat treatment and machining. They have high electrical conductivity and flexibility.	Fuel filters, electrical outlets, radiator pipes, decorative components, reflectors
Series 2ххх- Copper content between 0,7 to 6,8%	EN AW 2007 EN AW 2011 EN AW 2014 ЕN AW 2024 EN AW 2017	Series 2 offers alloys with high strength and hardness and good machining properties Resistant to corrosion, but in worse weather conditions. They require additional coverage for maximum durability Difficult to weld	Good for manufacturing machine parts, bolts and rivets   It is often used for hydraulic and pneumatic components.   The most suitable alloys for manufacturing parts in the military industry
Series 3ххх – Alloys with manganese content between 0,05 to 1,8%	EN AW 3003 EN AW 3004	The 3-series alloys have satisfactory strength with good durability under corrosion conditions. They provide good design prerequisites, but without the option of heat treatment.	Storage containers, beverage box, domestic appliances, heat exchangers, pressure vessels, exterior cladding of buildings and gutters
Series 4ххх – Alloy with silicon content between 0.6 to 21.5%	EN AW 4006 EN AW 4007 EN AW 4015 EN AW 4032	Adding silicon to aluminum also reduces the melting point and improves the liquid form of the alloy after this process. These are the only alloys that can have an option for and without subsequent heat treatment	Series 4 is mainly used for welding and soldering individual elements
Series 5xxx – Deals with a magnesium content of 0.2 to 6.2%	EN AW 5083 EN AW 5052 EN AW 5754 EN AW 5074 EN AW 5005	Alloys in this series have the highest degree of durability of alloys without the possibility of hot working. They also have very good readings when welding.	The mechanical properties of the 5 Series alloys give rise to their demand in the following industries: shipbuilding, transportation, pressure vessels, bridge and building construction.
Series 6ххх – Alloy with magnesium and silicon with about 1% content of both elements	EN AW 6060 EN AW 6012 EN AW 6063 EN AW 6262 EN AW 6026 EN AW 6005 EN AW 6082	The combination of magnesium and silicon provides durability to this alloy Good for welding purposes. Corrosion resistance is good. This group of alloys is good for anodizing, in particular EN AW 6060 and EN AW 6063 for decorative purposes	Suitable for designing tasks involving considerable machining and milling Alloys such as EN AW 6060 and EN AW 6063 are mainly used for the production of windows, doors, interior decoration and others. EN AW 6082 is used in industries that require better mechanical properties of the metal.
Series 7ххх – Zinc alloy	EN AW 7075	Very high strength and hardness. This alloy is extremely difficult to process and requires high-tech capabilities	Aircraft and the military industry

Aluminum alloys name according to EN, DIN, WERKSTOFF N-R

LABELING AND SIGNIFICANCE OF HEAT TREATMENT

1. BASICS:

 F – no special control of heat treatment or hardening has been performed after shaping the product

 O – annealed state – this state provides the lowest hardness and the highest ductility of the metal

 H – drawn – only for plastically deformable products / rolled products. Used for products that have been hardened by heating to a low temperature after cold processing.

 W – this is a hardening that is rarely used and is quite unstable. It is only suitable for alloys that have an aging process at normal temperature levels, having been hot-treated.

 T – Used for products that have been tempered with hot work

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2. T – TEMPER CODES

 T1 – Cooled by elevated temperature during the molding process and by a natural aging process to achieve stable mechanical properties

 T2 – Cooled by elevated metal temperature under which it is machined, cold machined and with natural aging for high stability

 T3 – Hardening in an aqueous solution, cold-treated / pressed / and with natural aging of the metal for high stability

 T4 – Hardening in aqueous solution with natural aging of the metal for high stability

 T5 – Cooled by elevated temperature during the molding process and the process of artificial aging of the metal

 T6 – Hot treated in a solution with an artificial aging process creating the highest strength and mechanical properties, but reduces the ductility of the metal.

 T7 – ​​hot treated in solution and stabilized, which leads to improved mechanical properties – strengthening

 T8 – Hardening in aqueous solution and press for artificial aging

 T9 – Hardening in aqueous solution, artificial aging and hardening of the press

3. INDICATION OF HEAT TREATMENT FOR ROLLED PRODUCTS

 FH – no mechanical properties required, cold machined – cold rolled products

 OH / H111 – soft – cold rolled

 H12 / H134 – ¼ hard – cold rolled

 H22 / H234 – ¼ Solid – warm

 H32 / H334 – ¼ solid – reinforced

 H14 / H154 – ½ Hard – cold rolled

 H24 / H254 – ½ Solid – warm

 H34 / H354 – ½ solid – hardened

 H18 / H194 – Solid – Cold Vacuum

 H28 / H294 – solid – warm

 H38 / H394 – hard – hardened

 H19 / H1985 – very hard – cold rolled

Aluminium specification of alloys