Tungsten is a very hard, extremely strong and heat resistant metal. It is used in many applications, including high speed steels, rocket nozzles and radiation shielding. It is also mixed with other metals to provide non-brittle properties such as tungsten nickel alloys.
WHITE STONE/ TIGER STEEL, WC-Ni / JJISCO NiLAST(r)
A popular choice for wear-resistant components, white stone and tiger steel (WC-Ni), consists of a fine grain structure that provides excellent resistance to corrosion. It has a higher hardness than WC-Co, making it ideal for use in demanding environments and applications.
THICK STONE/ TIGER STEEL, W-Ni / JJISCO BlackLAST(r)
Tungsten heavy alloys consist of an essentially homogeneous tungsten content of about 88%-98% by weight in balance nickel and iron. They are a common alloy for radiation shielding, counterweights and weights, gyroscope rotors, armor-piercing bullet cores, radium switch contacts, and crankshaft balancing.
Kinetic energy penetrators, WC-Ni / JJISCO Tandem Rolling with Kocks mill or hydrostatic extrusion can produce grains of an aspect ratio of over about 4 that increase penetration ability when compared to unworked tungsten heavy alloy. However, recrystallization of these spherical grains at temperatures below 800 deg C significantly reduces the mechanical properties.
Brush plating of tungsten nickel copper or tungsten nickel iron is difficult due to instability of brush plating tools and the loss of water as the solution circulates. The electrolyte should be formulated to deposit the tungsten in close proximity to the deposited nickel. The use temperature of the electrolyte should be below 60 deg C and it should not contain any halogens or other chemicals that could be harmful to the operator or to the material being plated.