High density Tungsten based cemented alloy are materials with a high tungsten content and low amounts of Ni Fe or Ni Cu. (1). Advantages High density (17.0--18.5g/cm3). High modulus of elasticity. Harmless to the health and environment. Good machinability. Good mechanical properties High absorption capacity against x-rays and γ-rays. (2). Applications Balancing weights. Balls in bomb. High voltage electrical contact. Protection shields for nuclear radiation. Electroheat upsetting anvil block. Substitutional material for Uranium.