Alloy 30NKD (30NKD-VI)

  • Alloy 36H
  • Alloy 80HMV (80HMVX3)
  • Alloy 58H (EI792)
  • Alloy 52H (EI676; 52H-VI)
  • Alloy 48NH (EI693)
  • Alloy 47NHR
  • Alloy 47NH (EI563)
  • Alloy 47ND (47ND-VI)
  • Alloy 47H3X
  • Alloy 42NA-VI (EP333)
  • Alloy 42H (EP318; 42NA)
  • Alloy 40K27KhNM with tantalum
  • Alloy 39H
  • Alloy 38NKD (38NKD-VI)
  • Alloy 36NH (EP713)
  • Alloy 35NKT
  • Alloy 35NKG (EK53)
  • Alloy 34NKD
  • Alloy 33HX3 (EP547)
  • Alloy 33NK (33NK-VI)
  • Alloy 32NKh3 (EP546)
  • Alloy 32NKD (EI630A)
  • Alloy 32NK (EP475)
  • Alloy 31NH3G (EP545)
  • Alloy 30NKD (30NKD-VI)
  • Alloy 29NK (29NK-VI)
  • Alloy 18KhTF
  • Alloy 18KhMTF

    • Designation

    Name The value
    Designation GOST Cyrillic 30НКД
    Designation GOST Latin 30HKD
    Transliteration 30NKD
    By chemical elements 30NiCoД
    Name The value
    Designation GOST Cyrillic 30НКД-ВИ
    Designation GOST Latin 30HKD-BI
    Transliteration 30NKD-VI
    By chemical elements 30NiCoД-ВIr

    Description

    Alloy 30NKD used: for the manufacture of vacuum-tight junctions with refractory glass stamps C38−1 and for certain types of junctions with glass stamps C40−1.

    Note

    Alloy with a low CTE value.
    Alloy with a CTE (to 3.3−4.6)·10-6 deg-1 in the temperature range from minus 60 to plus 400 °C.

    Standards

    Name Code Standards
    Classification, nomenclature and General rules В30 GOST 10994-74
    Tape В34 GOST 14080-78
    Wire, steel, alloy В73 GOST 14081-78
    Bars and shapes В32 GOST 14082-78, TU 14-11-245-88

    Chemical composition

    Standard C S P Mn Si Ni Fe Cu Co
    GOST 10994-74 ≤0.05 ≤0.015 ≤0.015 ≤0.4 ≤0.3 29.5-30.5 Rest 0.3-0.5 13-14.2
    Fe is the basis.

    Mechanical properties

    Section, mm σU, MPa
    Cold-rolled steel strip according to GOST 14080-78 on delivery
    0.1-2.5 ≤930

    Description mechanical marks

    Name Description
    σU Limit short-term strength

    Physical characteristics

    Temperature r, kg/m3 a, 10-6 1/°C
    20 8200 -
    -100 - 56
    -80 - 55
    -60 - 53
    -40 - 51
    -20 - 50
    100 - 46
    200 - 44
    300 - 40
    400 - 45
    500 - 65
    600 - 82
    700 - 95
    800 - 107

    A description of the physical symbols

    Name Description
    Е The normal elasticity modulus
    l Coefficient of thermal conductivity

    Technological properties

    Name The value
    Frost Tape x/K alloy 30NKD (30NKD-VI) according to GOST 14080-78 and wire cold-drawn according to GOST 14081-78 should be hardy to minus 70 °C.
    The temperature of the inflection point ≥390 °C