
Tungsten alloy shot, which is usually consisted of W-Ni-Fe or W-Ni-Cu or even W-Ni-Cu-Fe, is widely used for military defense. According to the experts, tungsten alloys are the ideal materials for military defense as they are very dense – 1.7 times heavier than lead. And tungsten alloys are non-toxic so that they are often used to replace lead, which is toxic to animals, environment and even humans. Also, tungsten alloys have great hardness, good strength and excellent resistance to high…