Tungsten W-15
Designation
Description
Tungsten W-15 applies: for production of wire and ground rods ø 4,0−9,0 mm, intended for the manufacture of light sources and components of electronic industry; drawn and forged bars with diameter from 1.0 mm to 12 for the manufacture of electronic products; bars with gas-phase deposition on the surface of tungsten for the manufacture of electrodes of the xenon lamps.
Note
Thoriated tungsten (tungsten with thorium).
Standards
Chemical composition
W is the basis.
According to GOST 19671-91, the chemical composition is given for a tungsten alloy of the BT-15 grade. The Thorium (Th) column indicates the mass fraction of thorium oxide in the alloy, which should be within the range of 1.50-2.00. The total mass fraction of impurities should not be more than 0.050%.
According to TU 48-19-59-87, the chemical composition is given for a tungsten alloy of BT-15 grade. The Thorium (Th) column indicates the mass fraction of thorium oxide in the alloy, which should be within the range of 1.50-2.00. The total mass fraction of impurities should not be more than 0.090%. The amount of impurities includes molybdenum, iron, aluminum, silicon and calcium.
According to TU 48-19-533-92, the chemical composition is given for a tungsten alloy of BT-15 grade. The Thorium (Th) column indicates the mass fraction of thorium oxide in the alloy, which should be within the range of 1.50-2.00. The total mass fraction of impurities should not be more than 0.050%.
The mass fraction of tungsten, including thorium oxide, must be at least 99.95%. The amount of impurities includes iron, calcium, molybdenum, potassium, silicon, aluminum.
According to GOST 19671-91, the chemical composition is given for a tungsten alloy of the BT-15 grade. The Thorium (Th) column indicates the mass fraction of thorium oxide in the alloy, which should be within the range of 1.50-2.00. The total mass fraction of impurities should not be more than 0.050%.
According to TU 48-19-59-87, the chemical composition is given for a tungsten alloy of BT-15 grade. The Thorium (Th) column indicates the mass fraction of thorium oxide in the alloy, which should be within the range of 1.50-2.00. The total mass fraction of impurities should not be more than 0.090%. The amount of impurities includes molybdenum, iron, aluminum, silicon and calcium.
According to TU 48-19-533-92, the chemical composition is given for a tungsten alloy of BT-15 grade. The Thorium (Th) column indicates the mass fraction of thorium oxide in the alloy, which should be within the range of 1.50-2.00. The total mass fraction of impurities should not be more than 0.050%.
The mass fraction of tungsten, including thorium oxide, must be at least 99.95%. The amount of impurities includes iron, calcium, molybdenum, potassium, silicon, aluminum.