Tungsten VM
Tungsten B (VA)
Tungsten BM
Alloy VNZH 7-3
Alloy VNZh-90
Alloy VNZh-95
Alloy VNZh-97 (VNZh 97.5)
Alloy VNM 3-2
Tungsten VRN
Tungsten VT-10
Tungsten VT-15
Tungsten BT-30
Tungsten BT-50
Tungsten BT-7
Alloy SVI-1
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Designation
Description
Tungsten VM is used: for production of wire for the manufacture of light sources.
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 brand VM. The Thorium (Th) column indicates the mass fraction of thorium oxide in the alloy, which should be in the range 0.17-0.25. The total mass fraction of impurities should not be more than 0.050%.
According to GOST 19671-91, the chemical composition is given for a tungsten alloy of the brand VM. The Thorium (Th) column indicates the mass fraction of thorium oxide in the alloy, which should be in the range 0.17-0.25. The total mass fraction of impurities should not be more than 0.050%.
