Rolled dural
Equivalent
| Grade | analogue | W. Nr. | Aisi Uns | En | Order |
|---|---|---|---|---|---|
| D16 | 1160 | 3.1355 | AA2024 | AlCuMg2 | Buy from stock, view availability |
| D1 | 1110 | Buy from stock, view availability | |||
| D18 | Buy from stock, view availability |
Technical characteristics
Dural (or duralumin in another way) is a deformable aluminum alloy with the addition of magnesium and copper. To buy it today is not difficult. The price depends on the cost of the components and additional supply conditions.
Duralumin is alloyed with such components as Mn, Cu and Mg. Usually copper contains 4.4%, manganese 0.5%, and magnesium 1.5%. Magnesium and copper are used to give the alloy strength. Manganese, due to its properties, refines the structure, thereby increasing resistance to corrosion 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.
Percentage composition of duralumin D16
| Fe | Al | Cr | Mn | Cu | Zn | Mg | Si | Ti+Zr | Impurities |
|---|---|---|---|---|---|---|---|---|---|
| ≤0,5 | 91-94,7 | ≤0,1 | 0,3-0,9 | 3,8-4,9 | ≤0,25 | 1,2-1,8 | ≤0,5 | ≤0,2 | 0,15 |
Advantages of
Ease of machining distinguishes duralumin from other alloys.
2. Structural strength is also a plus. Maximum strength is achieved after heat treatment.
3. Duralumin is a very light alloy. Its density is 2.5-2.8 g/cm3.
Disadvantages .
Duralumin is very sensitive to sharp cuts. Secondly, a significant reduction in strength characteristics at higher t° above 140 °C. Thirdly, in comparison to aluminium, dural has a lower degree of corrosion resistance. The sensitivity to corrosion is particularly pronounced under stress, and cladding has been used to counteract this deficiency. Pure aluminum is applied to the surface of the alloy in a thin layer by hot cladding. The cladding method produces a corrosion-resistant and durable material.
Range
Duralumin is widely used today with industry, construction, engineering. Conventionally, duralumin is divided into four groups, depending on the saturation of constituent components, which affects the final price.
1. Classical D1 grade. The percentage composition has not changed since 1908, from the moment of the first melting.
2. The increased strength grade D16. High magnesium content gives strength.
3. Increased heat-resistant grades VD17 and D19. High copper and manganese content make them different.
4. Increased plasticity of D18 grade. Plasticity is achieved due to the increased proportion of magnesium and copper.
Percentage composition of duralumin D1
| Fe | Al | Cr | Mn | Cu | Zn | Mg | Si | Ti | Impurities |
|---|---|---|---|---|---|---|---|---|---|
| ≤0,7 | 92-95,5 | ≤0,1 | 0,4-1 | 3,5-4,5 | ≤0,25 | 0,4-0,8 | 0,2-0,8 | ≤0,15 | 0,15 |
Percentage composition of duralumin D18
| Fe | Al | Cr | Mn | Cu | Zn | Mg | Si | Ti | Impurities |
|---|---|---|---|---|---|---|---|---|---|
| ≤0,5 | 94,35-97,6 | ≤0,1 | ≤0,2 | 2,2-3 | ≤0,1 | 0,2-0,5 | ≤0,5 | --- | 0,15 |
Heat treatment
Annealing. The alloy is heated to t° 500 °C and as it cools, it becomes as flexible as pure aluminum. After the aging process, the leading properties of dural become hardness and rigidity. Natural aging requires a day's holding time and working t° of up to 100 degrees Celsius. Artificial aging requires higher temperatures but considerably less time. Once the process is completed, dural becomes a sufficiently strong and durable metal that it can be used under the highest stresses. Excellent ductility is achieved after annealing, and considerable self-strengthening after aging.
The self-strengthening ability of dural was discovered quite accidentally and is now often used in the processing of the material for use in modern industry. Depending on the production process, semi-finished products can be supplied as artificially aged, quenched and annealed. The heat treatment time varies greatly, depending on the structure and thickness of the alloy. After quenching, the alloys harden, but at the same time they retain high ductility, which allows them to undergo any kind of deformation. That is why piercing and stamping can be done in one go. It is worth noting that natural aging before deformation reduces the tensile strength by 2 kG/mm2 compared to the strength of parts that have aging after the necessary deformation. The technology requires deformation of D1 rolled products in the first two hours after quenching. D16 and D6 rolled products are deformed within 30 minutes after quenching.
Application
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. The most widely used duralumin grades are D16 and D1. They have become basic in aviation. Alloy D1 is considered to be one of the basic ones for making pipes, profiles, sheets, wires, forgings and forgings. Alloys Д16, Д18 (high plasticity) are used in aircraft industry for rivets. D19 and VD17 are used for making deformed semi-finished products that work at elevated temperatures. B95 is indispensable for pressed sections, bars and forgings.
Supplier
Where to buy a circle, wire, tube, sheet, strip of duralumin in bulk or in installments? Supplier "Auremo" offers to buy a circle, wire, tube, sheet, strip of duraluminium 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 duraluminium today. Wholesale customers price - favorable.
Buy at a favorable price.
Company "Auremo" offers to buy duralumin on favorable terms. The widest range of products for large-scale production is presented in stock. We have attractive conditions for retail buyers as well. Always available round tube, wire, sheet, strip of duralumin, the price - due to the technological features of production without including additional costs. The quality corresponds to GOST and international standards. The best price from the supplier. Buy duraluminy today. We are waiting for your orders.
