Tungsten W-30
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
Designation
| Name | The value |
|---|---|
| Designation GOST Cyrillic | ВТ-30 |
| Designation GOST Latin | BT-30 |
| Transliteration | VT-30 |
| The chemical elements | ВTe-30 |
Description
Tungsten W-30 used: for the production of drawn and forged bars with diameter from 1.0 mm to 12 for the manufacture of electronic products.
Note
Thoriated tungsten (tungsten with thorium).
Standards
| Name | Code | Standards |
|---|---|---|
| Bars | В55 | TU 48-19-533-92 |
Chemical composition
| Standard | W | Th |
|---|---|---|
| TU 48-19-533-92 | The rest | 2.5-3.5 |
W is the basis.
According to TU 48-19-533-92, the chemical composition is given for a tungsten alloy of the VT-30 grade. In the Thorium (Th) column, the mass fraction of thorium oxide in the alloy, which should be within the range of 2.50-3.50, is indicated. The total mass fraction of impurities should not be more than 0.060%.
The mass fraction of tungsten, including thorium oxide, must be at least 99.94%. The amount of impurities includes iron, calcium, molybdenum, potassium, silicon, aluminum.
According to TU 48-19-533-92, the chemical composition is given for a tungsten alloy of the VT-30 grade. In the Thorium (Th) column, the mass fraction of thorium oxide in the alloy, which should be within the range of 2.50-3.50, is indicated. The total mass fraction of impurities should not be more than 0.060%.
The mass fraction of tungsten, including thorium oxide, must be at least 99.94%. The amount of impurities includes iron, calcium, molybdenum, potassium, silicon, aluminum.
