In order to maintain purity and prevent contamination during processing, our 5N and purer grades are processed in directional solidification in vacuum which strictly maintains the cleanliness of the resulting purity metal without any risk of contamination. We can supply 5N (99.999%), 5N5 (99.9995%), 6N (99.9999%), and 6N5 (99.99995%) MBE grade, as well as related alloys from this process in a variety of shapes and sizes. When the 4N Purity is upgrading to 5N and higher purities, the initial shape produced is rod, either in 150 or 180 mm diameters, although for larger orders, we can supply 310 and 480 mm diameters as well. All other products, such as disks, foil, pellets, plate, rod, sheet, and slabs would be further processed from this...
Aluminum is uniquely suited for work in extreme cold temperatures since it retains physical properties at these low temperatures, which makes it effective for cryogenic applications. The purer the aluminum, the more it retains these properties, unlike aluminum alloys which will react differently as temperatures get colder. Aluminum will exhibit Superconductivity at 1.2 Kelvin (-457 F), when it offers no resistance to electrical current. Applications for superconductors include magnetic levitation, such as Maglev trains, medical biometric devices (MRI – magnetic resonance imaging), quantum computing, and high energy physics research.Another application is superconducting magnets which operate at, or near, 3 degrees Kelvin (-454 degrees Fahrenheit). To achieve these temperatures, cryogenic fluids such as liquid helium are used to cool the magnets. 5N aluminum is...
5N (99.999%) Aluminum and higher purities use 4N Aluminum as the starting raw material and separates the lower grade aluminum from the pure metal. The same two methods – Three-Layer and Crystallization - are used for both 4N and 5N purities, but for 4N production, the waste generated is minimal since the difference from 99.9 to 99.99% is not so great. Crystallization is the preferred method for 5N production since Three-Layer method adds Copper contamination. To produce 5N and better purities, energy and processing represent the majority of the cost, and the aluminum raw material is much less portion of the cost since so much of the aluminum raw material is discarded in the process. Higher purities require even more...
High Purity Aluminum (HPA) is used for many applications due to the purity and conductivity of the various grades of aluminum. 4N (99.99%- 1199 alloy) is the highest purity that can be produced in standard primary aluminum electrolytic production in one of the two main processes:(1) Fractional Crystallization method works by taking advantage of differences in solubility. This is more expensive process which produces pure metal with particularly low Copper (Cu) content (1 to 3 ppm), while most other elements are reduced in 4N production.(2) Three-Layer method is the lower cost process where the higher purity aluminum segregates from the lower purity aluminum with the addition of trace amounts of Cu, but which results in slightly higher Cu content (20 to 40...
