Alloy 42NKHTJU (42NKHTJUA)

  • Alloy 40KHNM (EI995)
  • Alloy 97NL (EI996)
  • Alloy 95NLM (EI996M)
  • Alloy 95NLVF (EI996V)
  • Alloy 68NKHVKTU (EP578)
  • Alloy 46NKhT (EP619)
  • Alloy 45NHT (EP218)
  • Alloy 44NCTU
  • Alloy 42NKhTUA (H41KhTA)
  • Alloy 42NKHTU (42NKHTUA)
  • Alloy 40KHMVTU
  • Alloy 36KhNTU (EI702)
  • Alloy 36NKhTYu8M (EP52)
  • Alloy 36NKhTU5M (EP51)
  • Alloy 36NKhTU (EI702)
  • Alloy 21NKMT (VES-130)
  • Alloy 17KhNGT (EI814)
  • Alloy 12KhNKMTU (SP22)

    • Designation

    Name The value
    Designation GOST Cyrillic 42НХТЮ
    Designation GOST Latin 42HXTJu
    Transliteration 42NHTYu
    By chemical elements 42NiCrTeAl
    Name The value
    Designation GOST Cyrillic 42НХТЮА
    Designation GOST Latin 42HXTJuA
    Transliteration 42NHTYuA
    By chemical elements 42NiCrTeAl

    Description

    Alloy 42NKHTJU used: for the manufacture of elastic and provocatively elements operating at temperatures up to +100 °C.

    Note

    Alloy dispersion-hardening with low temperature coefficient of modulus of elasticity up to +100 °C (20·10-6 1/°C) with a temporary resistance 1180−1570 MN/m2 (120−160 kgf/mm2).

    Standards

    Name Code Standards
    Classification, nomenclature and General rules В30 GOST 10994-74
    Tape В34 GOST 14117-85, TU 14-4-664-75
    Wire, steel, alloy В73 GOST 14118-85
    Bars and shapes В32 GOST 14119-85, TU 14-11-245-88
    Sheets and strips В33 TU 14-1-3270-81
    Steel pipes and fittings to them В62 TU 14-3-379-75

    Chemical composition

    Standard C S P Mn Cr Si Ni Fe Al Ti
    GOST 10994-74 ≤0.05 ≤0.02 ≤0.02 0.5-0.8 5.3-5.9 0.5-0.8 41.5-43.5 Rest 0.5-1 2.4-3
    Fe is the basis.

    Mechanical properties

    Section, mm t отпуска, °C sT|s0,2, MPa σU, MPa d d10 y, % HRC
    Cold-rolled steel strip as supplied by GOST 14117-85
    0.1-2 - - ≥830 - - - -
    Cold-rolled steel strip as supplied by GOST 14117-85. Quenching in water from 900-920 °C + Aging at 680-700 °C (extract 3 hours)
    0.1-0.9 - - ≥980 ≥5 - - -
    1-2 - ≥735 ≥1080 ≥8 - - ≥30
    Cold-rolled steel strip as supplied by GOST 14117-85. Aging (in the graph, the temperature of leave is specified aging temperature and aging time)
    - 680-700, 3ч - - - - - -
    - 600-650, 1-2ч 1130-1320 1270-1420 ≥3 - - -
    Cold drawn wire in the delivery state according to GOST 14118-85. Aging at 600-700 °C (exposure 1-2 h), air cooling
    0.3-5 - - ≥1270 - - - -
    0.3-5 - - - - - -
    Bars and rods, hot-rolled, forged and with special surface finish GOST 14119-85. Quenching in water from 900-920 °C + Aging at 680-700 °C (extract 3-4 hours), air cooling
    1-120 - ≥635 ≥980 - ≥8 ≥25 -

    Description mechanical marks

    Name Description
    sT|s0,2 Yield strength or limit of proportionality with a tolerance for residual deformation of 0.2%
    σU Limit short-term strength
    d Elongation after rupture
    d10 Elongation after rupture
    y The relative narrowing
    HRC Rockwell hardness (indenter diamond spheroconical)

    Physical characteristics

    Temperature r, kg/m3
    20 7900

    A description of the physical symbols

    Name Description
    Е The normal elasticity modulus
    G Modulus of elasticity shear torsion
    r Density
    l Coefficient of thermal conductivity
    С Specific heat