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Circle, wire, tube, sheet, strip AK4, AK4-1


Grade analogue W. Nr. Aisi Uns En Order
AK4 2618 Buy from stock, view availability
AK4-1 Buy from stock, view availability

Because of the low strength of pure aluminum, modern industry uses aluminum alloys.

Technical characteristics

AK4, AK4-1 are wrought aluminum alloys with the addition of magnesium and copper. They have excellent ductility and are ideal for forging. To buy these alloys today is not difficult. The price depends on the order volume and additional delivery conditions. The main alloying components of wrought aluminum alloys are Mn, Cu and Mg.

Percentage composition (GOST 4784-97)
Fe Si Mn Ni Cr Ti Al Cu Mg Zn Impurities
0.8 - 1.4 ≤0.35 ≤0.2 0.8 - 1.4 ≤0.1 0.02 - 0.1 93.05 - 95.28 1.9 - 2.7 1.2 - 1.8 ≤0.3 ≤0.1

Magnesium and copper are used to impart strength to the alloy. Manganese, due to its properties, refines the structure, thereby increasing corrosion resistance and strength. In addition to the above elements, silicon and iron are also used in the composition. Fe is considered a harmful impurity, reduces strength and ductility. Si helps to reduce the harmful effects of iron, binding it to a certain extent. The melting point of the alloy is 650 degrees.


The circle is a cylinder of standard length up to 6 meters with a diameter of 10-400 mm. Aluminum sheet of this grade or plate is necessarily coated with a protective layer to improve corrosion resistance. Anodizing is another way to improve semi-finished product characteristics.

Heat treatment

Heat-treated and unhardened versions of rolled products are produced. After annealing, excellent ductility is achieved, and after aging, significant self-strengthening is achieved. Annealing. The alloy is heated to 500 °C, and upon cooling it acquires the flexibility of pure aluminum.


After the aging process, hardness and toughness become the leading properties. Natural aging requires about 24 hours and an operating temperature of 20 degrees Celsius. Artificial aging requires a higher temperature, but much less time. After completing the technology AK4 becomes a fairly strong and durable material, which can be used at the highest loads. It should be noted that natural aging after deformation reduces the ultimate strength by 2 kG/мм compared to the strength of those parts where aging occurred after the necessary deformation.


- heat resistance;

- suitability for roller and spot welding;

- low weight of products,

- low cracking rate;

- resistance to vibration loading.


Firstly, it is highly susceptible to corrosion, especially under stress, which can be eliminated by cladding. Secondly, high sensitivity to sharp cuts. Thirdly, a significant reduction in strength characteristics when the t° exceeds 140 °C.


Mechanical engineering, aircraft construction, high-speed trains, residential or industrial construction. The preferred use of this alloy is due to its greater hardness compared to aluminum.


Where to buy AK4, AK4-1 aluminum rounds, wires, pipes, sheets, strips in bulk or in installments? Supplier "Auremo" offers to buy aluminum rolled products today on favorable terms. Large selection of semi-finished products in stock. Compliance with GOST and international quality standards, the price is optimal from the supplier. Buy today. Wholesale customers price - preferential.

Buy, favorable price

Auremo offers to buy aluminum rolled products on favorable terms. The widest choice of products for large-scale productions is presented in the warehouse. We have attractive terms for retail buyers as well. Always available round tube, wire, sheet, strip aluminum AK4, AK4-1, price - due to the technological features of production without the inclusion of additional costs. Quality meets GOST and international standards. The best price from the supplier. We are waiting for your orders.