Proceedings of the Sixth International Conference on Tungsten, Refractory & Hardmetals sponsored by the Metal Powder Industries Federation in cooperation with the Refractory Metals Association and APMI International, February 7-8, 2006, Orlando, Florida. The Proceedings of the 6th International Conference on Tungsten, Refractory & Hardmetals include expert reports on the latest technical developments in all areas of refractory metal technology, from powder preparation to end-use applications. This includes material systems based on alloys and compounds of all refractory metals but with specific emphasis on tungsten-based systems.