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
    By 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 from nonferrous 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.