Tungsten VRN
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 | ВРН |
| Designation GOST Latin | BPH |
| Transliteration | VRN |
| The chemical elements | ВHgNi |
Description
Tungsten VRN is used: for the production by powder metallurgy drawn and forged bars used for the manufacture of electronic products; wire for light sources.
Standards
| Name | Code | Standards |
|---|---|---|
| Wire of non-ferrous metals and their alloys | В74 | GOST 19671-91 |
| Bars | В55 | TU 11-77 |
Chemical composition
| Standard | Si | Fe | Al | Mo | Ca | W |
|---|---|---|---|---|---|---|
| TU 11-77 | - | - | - | - | - | ≥99.9 |
| GOST 19671-91 | 0.001-0.01 | ≤0.01 | 0.001-0.01 | ≤0.04 | ≤0.02 | ≥99.9 |
W is the basis.
According to TU 11-77, the content of tungsten is indicated including the content of thorium oxide. The sum of impurities and additives ≤ 0.10%. The sum of impurities and additives includes the following elements: iron, calcium, molybdenum, potassium, silicon, aluminum.
According to GOST 19671-91, the chemical composition is given for tungsten grade BPH.
According to TU 11-77, the content of tungsten is indicated including the content of thorium oxide. The sum of impurities and additives ≤ 0.10%. The sum of impurities and additives includes the following elements: iron, calcium, molybdenum, potassium, silicon, aluminum.
According to GOST 19671-91, the chemical composition is given for tungsten grade BPH.
