Steel 34ХН1МА (34ХН1М)

  • Steel 03Х11Н10М2Т2Ю (EC19; VNS17UP)
  • Steel 04Х14Т3Р1Ф (ChS82; 04Х14Т5Р2Ф; ChS82М)
  • Steel 100XHNMF
  • 22Cr3M steel
  • Steel 34KhN1M (0KhN1M)
  • Steel 34KhN1MA (34KhN1M)
  • 35KhMFA steel
  • Steel 70Г14Н3 (ЭИ94)
  • Steel 85G13 (EI700)
  • X17H2 steel
  • X23H18 steel
  • X30 steel
  • KhN28MDT steel

    • Designation

    Name The value
    Designation GOST Cyrillic 34ХН1МА
    Designation GOST Latin 34XH1MA
    Transliteration 34HN1MA
    By chemical elements 34CrН1Mo
    Name The value
    Designation GOST Cyrillic 34ХН1М
    Designation GOST Latin 34XH1M
    Transliteration 34HN1M
    By chemical elements 34CrН1Mo

    Description

    34ХН1МА steel is used: for the manufacture of forgings of various parts of General engineering; of forgings of shafts of compressors and gas turbines; shafts, rotors, workpieces disks of steam turbines with operating temperatures up to +350 °C, the shaft-gears, couplings, gear wheels and other critical heavily loaded parts operating at temperatures up to +500 °C; billet shafts and solid-forged rotors of stationary and transport steam turbines.

    Note

    High alloy steel high quality.

    Standards

    Name Code Standards
    Processing of metals by pressure. Forgings В03 TU 108-1028-81, TU 108-1029-81, TU НЗЛ 342-89, TU 0306.018-80, TU 108.11.917-87
    Blanks. Of the workpiece. Slabs В31 TU НЗЛ 341-93

    Chemical composition

    Standard C S P Mn Cr Si Ni Fe Cu Mo
    TU 108-1029-81 0.3-0.4 ≤0.022 ≤0.025 0.5-0.8 1.3-1.7 ≤0.37 1.3-1.7 Rest ≤0.25 0.2-0.3
    TU НЗЛ 342-89 0.3-0.4 ≤0.025 ≤0.025 0.5-0.8 1.3-1.7 0.17-0.37 1.3-1.7 Rest ≤0.3 0.2-0.3
    Fe is the basis.
    On 108.11.917-87 and TU NZL 342-89 the chemical composition is given for steel grade 34HN1MA.
    According to TU 108-1028-81 and TU 108-1029-81 the chemical composition is given for steel grade 34ХН1МА. In the workpieces, deviations in the content of the elements indicated in the table are allowed: carbon ± 0.010%, silicon + 0.030%.
    In the manufacture of blanks with discs with hub heights from 450 to 650 mm, the content of phosphorus and sulfur in steel should not be more than 0.018% of each; for metal VDP and ELP, the deviation of manganese content +0.10% / - 0.15% is allowed. In the ESR steel, the sulfur content should not be more than 0.015%. When casting steel without evacuation, for the manufacture of disc blanks with a hub height of more than 300 mm, hydrogen content in the metal must be determined. The results of determination of the hydrogen content are not acceptance-delivery and, at the request of the consumer, are to be entered in the procurement certificate.

    Mechanical properties

    Section, mm sT|s0,2, MPa σU, MPa d5, % y, % KCU, kJ/m2
    Forged billet shafts of compressors and gas turbines, heat-treated in the delivery condition on the other NZL 342-89 (longitudinal samples, in the column of the delivery condition specified strength)
    ≤550 490-687 ≥638 ≥15 ≥35 ≥490
    ≤450 590-765 ≥705 ≥15 ≥35 ≥490
    ≤300 687-883 ≥803 ≥14 ≥35 ≥490
    ≤300 736-931 ≥852 ≥13 ≥35 ≥490
    Billet shafts and rotors of steam turbines on the other 108-1029-81 (in the delivery condition specified strength and direction and place the cuttings sample)
    - 638-834 ≥804 ≥14 ≥40 ≥590
    - 638-834 ≥765 ≥11 ≥32 ≥440
    Forged blanks of disks of steam turbines on the other 108-1028-81 (in the delivery condition specified strength; in cross-section, if regulated, see the recommended height of the hub)
    - 490-687 ≥657 ≥15 ≥40 ≥490
    ≤300 589-785 ≥765 ≥14 ≥40 ≥490
    ≤250 664-833 ≥815 ≥12 ≥40 ≥490

    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
    d5 Elongation after rupture
    y The relative narrowing
    KCU Toughness

    Technological properties

    Name The value
    Weldability Difficult weldability.
    Склонность к отпускной хрупкости Malosolone.
    Flock-sensitive sensitivity Sensitive.