The 70-30 Alloy Plrd (Plrd-30)

  • Alloy PlPd 90-10 (PlPd-10)
  • Alloy PlRu 92-8 (PlRu-8)
  • Alloy PlRu 90-10 (PlRu-10)
  • Alloy PlRd 98-2 (PlRd-2)
  • Alloy PlRd 95-5 (PlRd-5; PlRd 950-50)
  • Alloy PlRd 94-6 (PlRd-6; PR-6)
  • Alloy PlRd 93-7 (PlRd-7)
  • Alloy PlRd 92.5-7.5 (PlRd-7.5)
  • Alloy PlRd 90-10 (PlRd-10; PR-10)
  • Alloy PlRd 87-13 (PlRd-13; PR-13)
  • Alloy PlRd 80-20 (PlRd-20)
  • Alloy PlRd 70-30 (PlRd-30)
  • Alloy PlRd 60-40 (PlRd-40)
  • Alloy PlPdRdu 81-15-3,5-0,5 (PlPdRdu-15-3,5-0,5)
  • Alloy PlPdRd 92.5-4-3.5 (PlPdRd-4-3.5)
  • Alloy PlPd 95-5 (PlPd-5; PlPd 950-50)
  • Alloy PlPd 85-15 (PlPd-15)
  • Alloy PlPd 80-20 (PlPd-20)
  • Alloy PlN 95.5 (PlN-4.5)
  • Alloy PlM 97.5 (PlM-2.5)
  • Alloy PlM 95 (PlM-5; PlM 950-50)
  • Alloy PlM 91.5 (PlM-8.5)
  • Alloy PlM 90 (PlM-10; PlM 900-100)
  • Alloy PlI 95-5 (PlI 950-50; PlI-5)
  • Alloy PlI 90-10 (PlI 900-100; PlI-10)
  • Alloy PlI 85-15 (PlI-15)
  • Alloy PlI 82.5-17.5 (PlI-17.5)
  • Alloy PlI 80-20 (PlI 800-200; PlI-20)
  • Alloy PlI 75-25 (PlI-25)
  • Alloy PlI 70-30 (PlI-30)

    • Designation

    Name The value
    Designation GOST Cyrillic ПлРд 70-30
    Designation GOST Latin PlPd 70-30
    Transliteration PlRd 70-30
    By chemical elements PtHgд 70-30
    Name The value
    Designation GOST Cyrillic ПлРд-30
    Designation GOST Latin PlPd-30
    Transliteration PlRd-30
    By chemical elements PtHgд-30

    Description

    Plrd 70−30 alloy is used: for the manufacture of semi-finished products (sheets, tapes, strips, foils, wire, pipes, profiles, forgings) by hot or cold deformation used in instrument and apparatus building; thermocouples; laboratory glassware; hardware; glass vessels; thermoelectrodes of thermoelectrical transducers.

    Note

    Platinum-rhodium alloy.

    Standards

    Name Code Standards
    Wire from nonferrous metals and their alloys В74 GOST 10821-2007, GOST 18389-2014
    Non-ferrous metals, including rare, and their alloys В51 GOST 13498-79, GOST 13498-2010
    Sheets and strips В53 GOST 24353-80, GOST 24718-81
    Classification, nomenclature and General rules В50 GOST 6563-75

    Chemical composition

    Standard Fe Rh Pt
    GOST 10821-2007 - 30 70
    GOST 13498-79 ≤0.04 29.5-30.5 69.5-70.5
    Pt is the basis.
    According to GOST 13498-79, GOST 13498-2010, the total content of palladium, iridium, and gold in the alloy should be ≤ 0.15%. The sum of all the standard impurities (palladium, iridium, and gold, as well as silicon, lead, antimony and zinc) should be ≤ 0.19%.
    According to GOST 10821-2007 the chemical composition is given for the alloy grade PR-30. The chemical composition indicates the nominal mass fraction of the components. As starting materials, platinum and rhodium are used with a mass fraction of the main component of at least 99.95% in accordance with GOST 31290 and GOST 12342.

    Mechanical properties

    σU, MPa d
    GOST 13498-2010
    440-590 -
    Wire in the delivery state according to GOST 10821-2007
    ≥490 -
    ≥235 ≥17
    ≥88 ≥20

    Description mechanical marks

    Name Description
    σU Limit short-term strength
    d Elongation after rupture

    Physical characteristics

    Temperature r, kg/m3 R, Mr. · m
    20 17630 190

    A description of the physical symbols

    Name Description
    l Coefficient of thermal conductivity
    С Specific heat

    Technological properties

    Name The value
    Operating temperature Composed of a thermoelectric transducer together with alloy PR-6 operating temperature range is from 600 to 1700 °C. maximum temperature for short-term use of 1800 °C.