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This section provides an overview for super duralumin as well as their applications and principles. Also, please take a look at the list of 5 super duralumin manufacturers and their company rankings. Here are the top-ranked super duralumin companies as of December, 2024: 1.Hangzhou JWG Technology Co., Ltd, 2.AMAS Energy, 3.Chongqing Huanyu Aluminum Material Co., Ltd..
Table of Contents
Super duralumin is an aluminum alloy made by adding copper, magnesium, and other elements to aluminum.
It is stronger and easier to cut than duralumin, which is made by adding copper and other elements to aluminum. The hardness of super duralumin is 105HB, whereas that of super duralumin is about 120HB.
However, a disadvantage is that its corrosion resistance is reduced due to the high copper content.
Super duralumin has a specific gravity of about 1/3 that of steel. Taking advantage of its lightweight and high strength, it is used for various structural materials such as aircraft fuselages, bolt materials, and spindles.
Since weldability is inferior to other aluminum alloys, rivets and bolts are often used to join products made of super duralumin. In recent years, welding methods have advanced, and welding joints by resistance spot welding, etc. are used.
Pure aluminum is an extremely lightweight and workable material, but its disadvantage is its low strength. In general, "the strength of the base material increases when it contains copper. Super duralumin is an alloy in which copper is added to aluminum to improve strength and machinability.
In addition, super duralumin is made by adding copper and magnesium to aluminum. Compared to duralumin with the same composition, the amount of magnesium is increased to further increase strength.
The properties of aluminum alloys are greatly affected by heat treatment. Heat treatment is the process of heating a metal to a certain temperature and then cooling it. The heat treatment symbol T3 indicates that the alloy was cold worked after quenching, T4 indicates that the alloy was only quenched and left at room temperature for about 4 days to age-harden, and T6 indicates that the alloy was cold worked after quenching and then tempered.
The melting point of super duralumin is about 500-650℃, and it can be cast and processed relatively easily.
There are three types of material known as super duralumin. Specifically, they are A2017 duralumin, A2024 super duralumin, and A7075 super duralumin. All of these materials are made by adding copper to aluminum to increase strength. They are precipitation-hardening alloys, in which inter-metallic compounds, such as copper precipitate and harden.
A2017 duralumin is an alloy of aluminum with copper and magnesium added. In Japan, industrial production of A2017 duralumin began in 1921 at Sumitomo Copper Works, and the following year, domestically produced duralumin was used in airplane structures.
With a specific gravity of 2.79, A2017 duralumin is characterized by its extremely lightweight, yet excellent strength and machinability. On the other hand, its corrosion resistance and weldability are inferior to those of other aluminum materials. It has the disadvantage of being prone to intergranular corrosion, and its high susceptibility to cracking makes it an extremely difficult material to weld.
A2017 duralumin is manufactured by adding 3.5-4.5% copper and 0.40-0.80% magnesium to aluminum. The addition of copper to aluminum increases its strength but makes it more susceptible to oxidation. The hardness of duralumin increases to 105HB compared to 65HB of aluminum.
A2017 duralumin is used in a wide range of fields, taking advantage of its lightweight and high strength. These include parts for aircraft and rockets, for ships, machine parts such as hydraulic equipment and gears, attaché cases, fastening members such as screws and rivets, and window frames of buildings.
A2024 super duralumin is an alloy similar to A2017 duralumin, but differs in the content of copper (3.8-4.9%) and magnesium (1.2-1.8%). It has a higher hardness than A2017 Duralumin, about 120 HB, and its strength increases. On the other hand, corrosion resistance is slightly lower due to the effect of increased copper content. It is also a material with excellent machinability.
A2024 super duralumin has the disadvantage of low weldability. The oxide film on the surface has a higher melting point than that of the base metal, requiring the removal of the oxide film in advance. Another disadvantage is that the heat from the base metal easily escapes, making the welding process unstable.
A7075 duralumin is an alloy of aluminum containing 1.2 to 2.0% copper, 2.1 to 2.9% magnesium, and 5.1 to 6.1% zinc.
It has a hardness of 160HB and is the strongest duralumin material. Its tensile strength is about 570 N/mm^2, which is a significant increase over the 425 N/mm^2 of A2017 duralumin and 470 N/mm^2 of A2024 super duralumin.
Applications for super duralumin include aircraft, rolling stock, and sporting goods. As with super duralumin, its corrosion resistance is inferior, so care must be taken in the environment in which it is used and in corrosion-proofing treatment.
*Including some distributors, etc.
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ZP Aluminum Co., Ltd., established in 2005 and located in Guangdong, China, is a manufacturer that specializes in engineered products. The company offers a wide range of products, including aluminum extrusion profiles, aluminum heat sinks, CNC machining, and more. It also offers impact extrusion, external aluminum louvers, and trench grate. Its aluminum heat sinks can quickly transfer heat away from the device and into the heat sink and help maintain a stable operating temperature for the device. The company has obtained ISO 9001:2015 and SGS certifications. It serves industries such as construction, industrial, and LED strip lighting.
Chongqing Huanyu, established in 1996 and located in Xipeng Town, Chongqing, China, is a manufacturer of aluminum profiles, aluminum die forgings, and free aluminum forgings. The company’s main marketing products include aluminum alloy sheets, aluminum tubes, aluminum rods, aluminum profiles, aluminum die forgings, and free aluminum forgings. Its aluminum alloy products are manufactured in an environmentally friendly factory with ISO 9001 / TS 16949 quality management system certification. The products find applications in various industries such as aerospace, land transportation equipment manufacturing, shipbuilding, power generation, and consumer electronics.
Nextgen Steel & Alloys, headquartered in Ahmedabad, Gujarat, India, is a manufacturer and supplier of steel and alloy products. Its diverse product range includes stainless steel, carbon steel, and alloy steel products such as bars, sheets, and tubes, catering to various industries like food processing, construction, aerospace, and more. Additionally, the company offers wire rods for applications like concrete reinforcement and manufacturing nails, screws, and wire mesh. It also provides forged products used in crafting gears, shafts, and machine parts.
Ranking as of December 2024
Derivation Method| Rank | Company | Click Share |
|---|---|---|
| 1 | Hangzhou JWG Technology Co., Ltd |
50.0%
|
| 2 | AMAS Energy |
25.0%
|
| 3 | Chongqing Huanyu Aluminum Material Co., Ltd. |
25.0%
|
Derivation Method
The ranking is calculated based on the click share within the super duralumin page as of December 2024. Click share is defined as the total number of clicks for all companies during the period divided by the number of clicks for each company.Number of Employees
Newly Established Company
Company with a History
*Including some distributors, etc.
| Country | Number of Companies | Share (%) |
|---|---|---|
|
China
|
3 | 75.0% |
|
India
|
1 | 25.0% |
