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Bar, sheet, tube of aluminum AK8


Grade analogue W. Nr. Aisi Uns En Order
AK8 2014 3.1255 AlCu4SiMg Buy from stock, view availability

Technical characteristics

Deformed aluminum alloy of AK8 grade is represented by bars and sheets which are successfully used in the sphere of transport engineering and aircraft construction. The product, hardened and artificially aged has excellent mechanical properties both at high and low temperatures. Perhaps the only disadvantage of the alloy is its tendency to corrosion cracking.

Percentage composition (GOST 4784-97)

Fe Si Mn Cr Ti Mg Cu Zn Al
≤ 0.7 0.5 - 1.2 0.4 - 1 ≤ 0.1 ≤ 0.15 0.2 - 0.8 3.9 - 5 ≤ 0.25 90.8 - 95

Magnesium and copper impart strength to the alloy. Manganese, due to its properties, refines the structure, thereby increasing resistance to corrosion and strength. In addition to the above elements, the composition also uses silicon and iron up to 0.7%,. Fe is considered a harmful impurity, reduces strength and ductility. Si helps to reduce the harmful effects of iron, to a certain extent binding it. Due to alloying, the products of this grade are characterized by excellent processability and excellent resistance to possible cracking. In accordance with GOST 1583-93 number of alloying components in the manufacture of AK8 circle does not exceed 10%. Such ratio of alloying additives in the alloy allows to provide the products:

material hardness - up to 120 MPa;

tensile strength - 450 MPa;

yield strength - 400 MPa;

elongation - 8%.


Great hardness of material is obtained by cold deformation, and plasticity and workability is achieved by heat treatment. After annealing, excellent ductility is obtained, and after aging considerable self-strengthening is achieved. Annealing. The alloy is heated to 500 °C and upon cooling it acquires the flexibility similar to pure aluminum. After the aging process, hardness and toughness become the leading properties. To accomplish natural aging, approximately 24 hours and a working t° of 20 degrees Celsius are required. Artificial aging requires higher temperatures, but much less time. Once the heat treatment is completed, the material becomes strong enough and reliable material that can be used under high loads.

Advantages of

- temperature resistance, resistance to temperature variations;

- suitability for roller and spot welding;

- low specific weight;

- reasonable price;

- excellent workability;

- resistance to vibration loading.

This material has a hardness of 120 MPa, strength and excellent manufacturability. Due to these characteristics AK8 sheet is widely used in industry. It is used in production of airplane fuselages, car bodies, ship superstructures and construction. Sheet production is regulated by the requirements of GOST 17 232-99. Tubes of AMG6H grade are ductile, have low weight, are very well processed by spot welding and are easily welded. To achieve the corrosion resistance of the material it is clad with pure aluminum.


Mechanical engineering, aircraft manufacturing, high-speed trains, residential or industrial construction. The preferred use of this alloy is due to its greater hardness compared to aluminum. AK8 alloy is considered to be one of the main ones for producing pipes, profiles, sheets, wires and forgings. AK8 pipe is used for fragments of building structures for special purposes.

The supplier

Where to buy AK8 aluminum rounds, wires, pipes, sheets, strips in bulk or by installments? Supplier "Auremo" offers to buy a circle, wire, tube, sheet, strip of aluminum AK8 today on favorable terms. Large selection of semi-finished products in stock. Conformity to GOST and international quality standards, the price - the best from the supplier. Buy today. Wholesale customers price - favorable.

Buy, favorable price

Auremo" offers to buy aluminum on favorable terms. We have the widest range of products for large-scale productions in stock. We have attractive terms and for retail buyers. The price of AK8 aluminum tubes, wires, sheets and strips is conditioned by technological peculiarities of production without any additional costs. Quality meets GOST and international standards. Optimal price from the supplier. Buy today. Waiting for your orders.