1C117

Tungsten and alloys in particulate form with a tungsten content of 97 % by weight or more and a particle size of 50 × 10^-6 m (50 μm) or less;

Molybdenum and alloys in particulate form with a molybdenum content of 97 % by weight or more and a particle size of 50 × 10^-6 m (50 μm) or less;

Tungsten materials in solid form having all of the following: 1. Any of the following material compositions: a. Tungsten and alloys containing 97 % by weight or more of tungsten; b. Copper infiltrated tungsten containing 80 % by weight or more of tungsten; or c. Silver infiltrated tungsten containing 80 % by weight or more of tungsten; and 2. Able to be machined to any of the following products: a. Cylinders having a diameter of 120 mm or greater and a length of 50 mm or greater; b. Tubes having an inner diameter of 65 mm or greater and a wall thickness of 25 mm or greater and a length of 50 mm or greater; or c. Blocks having a size of 120 mm by 120 mm by 50 mm or greater.