Refractory Metals
EPI Carries a Full Line of International Standard Refractory Metal Products, Which Are Also Available in Various Dimensions
Welcome to EPI Materials specialist web site for Refractory Metals for the supply of semi-finished refractory metals to the Furnace, Nuclear, Glass, Aerospace, Defence, Chemical and Electronic Industries to name but a few.
In Addition to the supply of wrought materials EPI also provides items manufactured to customers’ specifications and drawings.
Tantalum
Tantalum is extremely corrosion resistant due to the formation of an oxide film, and is also resistant to acid attack (with the exception of HF). It will react with fused alkalis and a variety of non-metals at elevated temperatures.
Niobium
Niobium has an abundance of 20 ppm in the earth’s crust. As a pure metal, it is very reactive and forms an extremely stable oxide when exposed to air which enhances its corrosion resistance. Niobium will react with a variety of non-metals at elevated temperatures.
Molybdenum
Molybdenum has great strength at high temperature, low vapor pressure and low thermal expansion as well as excellent conductivities. It is used in aircraft parts, electronic applications, glass manufacturing, filaments, and many other applications. Due to its excellent thermal conductivity and low electrical resistivity, molybdenum is also widely used in the furnace industry for radiation screens, elements, and sintering trays.
Tungsten
EPItech Materials supplies pure Tungsten products such as Tungsten metal powder, Tungsten metal and Tungsten wire, etc., high density Tungsten alloy products such as Ferro Tungsten. We can manufacture customized products of different shapes and specifications according to clients’ requirements.
Zirconium
Zirconium, with atomic symbol Zr, has a content of about 130ppm within the Earth’s crust. It is not found in nature as a pure metal. Because of Zr’s excellent resistance to chemical corrosion, it is often used as a composition for alloys that are required to be exposed to aggressive environments. The major commercial source of zirconium is the silicate mineral and zircon (ZrSiO4).
Hafnium
Hafnium is a lustrous, silvery, ductile metal. It resists corrosion because of the oxide film on its surface, chemically similar to zirconium.
Hafnium is a good absorber of neutrons and is used for nuclear reactor control rods. It also has high melting point and corrosion resistant, so hafnium can be used in high-temperature alloys and ceramics.