Buffalo Tungsten produces ultra high purity tungsten powder. Our typical powders have a purity of 99.95%. The ultra high purity powders we manufacture are 99.999%, or five nines pure. 5N tungsten powder is another way to refer to this level of purity.
It requires high garde raw material to produce 5N tungsten powder. We source high quality tungsten ores and concentrates as the basis for our ultra high purity materials. We test incoming concentrates to assure that they meet our stringent quality standards. Our supply from ore bodies that are not of a sufficient grade for our five nines tungsten powder go into other products.
Manufacturing Ultra High Purity Tungsten Powder
It takes extra processing of the concentrates to achieve the high level of purity for the APT and tungsten oxide necessary for 5N tungsten powder. The process equipment that we use contains specialized materials to prevent contamination. When compared with typical APT or oxide production there are several additional steps in the process to remove impurities. This extra work is important because without a high quality intermediate material it would be impossible to achieve consistent five nine results in our finished product.
The typical reduction process of the tungsten powder is not good enough to make ultra pure tunsgten powder. Special equipment assures that the material does not pick up impurities in the reduction process. The conditions of the atmosphere and other factors must be under careful control to make material that is 99.999% pure. Storage containers for the powders also protect the material from contamination.
Improved Quality and Increased Capacity
Buffalo Tungsten has added new equipment this year to improve the quality of our 5N tungsten powder. This new equipment allows us to increase our production capacity of five nines powder as well. If you need ultra high purity powders for sputtering targets, electrodes or other applications, contact Buffalo Tungsten to see how we can help to meet your needs.