This 1.000" dia x 0.067" (+/-0.010" on both dimensions) tungsten heavy alloy disc is crafted from our MT-17C alloy, composed of 90% W, 6% Ni, 4% Cu, and boasts a density of 17 g/cc. It adheres to the international standard ASTM B777, Grade 1, Type II & III. Each material lot is controlled, stress relieved, and processed through high temperature pressing and sintering.