Alloy 48NKH (ЭИ693)

  • 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 48НХ
    Designation GOST Latin 48HX
    Transliteration 48NH
    By chemical elements 48NiCr
    Name The value
    Designation GOST Cyrillic ЭИ693
    Designation GOST Latin EI693
    Transliteration EhI693
    By chemical elements -

    Description

    Alloy 48NKH used: for the manufacture of vacuum-tight junctions with thermometric glass brands 16Ш, С72−4, etc.

    Note

    Alloy with an average value of CTE.
    Alloy with a CTE (8,5−9,5)·10-6 deg-1 in the temperature range from -70 to + 450 °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
    Steel pipes and fittings to them В62 GOST 14162-79, TU 14-159-165-87
    Blanks. Of the workpiece. Slabs В31 TU 14-1-3904-84, TU 14-1-613-73
    Pipes of ferrous metals and alloys, cast fittings to them В61 TU 14-3-225-74

    Chemical composition

    Standard C S P Mn Cr Si Ni Fe Cu
    GOST 10994-74 ≤0.05 ≤0.015 ≤0.015 0.3-0.6 0.7-1 ≤0.3 48-49.5 Rest ≤0.2
    Fe is the basis.

    Mechanical properties

    Section, mm σU, MPa d5, %
    Tubes of small dimensions (capillary) heat-treated or cold-worked in the state of delivery according to GOST 14162-79
    ≥392 ≥40
    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
    d5 Elongation after rupture

    Physical characteristics

    Temperature r, kg/m3 a, 10-6 1/°C
    20 8350 -
    100 - 86
    200 - 86
    300 - 85
    400 - 85
    500 - 92
    600 - 107
    700 - 112
    800 - 119

    A description of the physical symbols

    Name Description
    Е The normal elasticity modulus
    l Coefficient of thermal conductivity
    R UD. the resistivity

    Technological properties

    Name The value
    The temperature of the inflection point ≥410 °C