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 initial rod shape.
There is more interest in high purity aluminum alloys, and we continue to expand our production for various alloys. We have supplied the following alloys:
AlSi1% AlCu2% AlNd
AlSi1%Cu0.5% AlNi (45 to 50 ppm) AlMg
Other alloys can be custom produced, but typically we have 200 to 250 kg minimum quantities for custom alloys.
All our material (5N and up) is tested by GDMS (Glow Discharge Mass Spectrometer) for metallic content. Reported elements range from 28 elements for 5N up to 60 elements for 6N. Gas content (O, N, H, and C) is tested periodically and typical levels are referenced in our typical chemical analysis.
Please feel free to check our Typical Analysis for the various purities and alloys:
Chemical Properties (highpurityaluminum.com)