Steel SHKH15SG

  • Steel 110Kh18M (110Kh18M-SHD)
  • Steel 11X18M
  • Steel 60X13S (60X13S-SHD)
  • Steel 8Х4В9Ф2 (ЭИ347; 8Х4В9МФ2)
  • Steel 8X4M4V2F1 (DI43)
  • ShKh10 steel
  • ShKh15 steel
  • ShKh15S2G3 steel
  • ShKh15SG steel
  • ShKh15SM steel (DI36)
  • ShKh20SG steel
  • ShKh4 steel

    • Designation

    Name The value
    Designation GOST Cyrillic ШХ15СГ
    Designation GOST Latin ShX15CG
    Transliteration ShH15SG
    By chemical elements -

    Description

    SHKH15SG steel is used: for the manufacture of seamless hot-deformed pipes, intended for the manufacture of rings, ball and roller bearings; large-size forged rings, ball and roller bearings with a wall thickness of 20−30 mm; balls with a diameter more than 50 mm; rollers with a diameter greater than 35 mm; bearings for railway transport.

    Standards

    Name Code Standards
    Sheets and strips В23 GOST 103-2006
    Bars and shapes В22 GOST 2590-2006, GOST 2591-2006
    Steel pipes and fittings to them В62 GOST 800-78
    Bars and shapes В32 GOST 801-78, GOST 7417-75, GOST 14955-77, TU 14-1-3494-82, TU 1-83-77-90, TU 14-11-245-88
    Blanks. Of the workpiece. Slabs В31 TU 14-1-1213-75, TU 14-1-3680-83, TU 14-1-3911-85

    Chemical composition

    Standard C S P Mn Cr Si Ni Fe Cu
    GOST 801-78 0.95-1.05 ≤0.02 ≤0.027 0.9-1.2 1.3-1.65 0.4-0.65 ≤0.3 Rest ≤0.25
    Fe is the basis.
    According to GOST 801-78 and TU 14-1-3911-85 the chemical composition is given for steel grade SHH15SG. The total content of Ni + Cu≤ 0.50%. In steel, obtained by the method of electroslag remelting, the mass fraction of sulfur should not exceed 0.01%, and phosphorus 0.025%. When steel is smelted in acid open-hearth furnaces, the mass fraction of copper is allowed up to 0.30%, while maintaining the norm of the total share of copper and nickel is not more than 0.050%. For steel ШХ15СГ-Ш with a cross section of more than 140 mm intended for the manufacture of large-sized bearings, restricted limits are established: the mass fraction of manganese is 1.00-1.20%, chromium is 1.40-1.65%, silicon is 0.45- 0.65%.

    Mechanical properties

    Section, mm t отпуска, °C sT|s0,2, MPa σU, MPa d5, % y, % KCU, kJ/m2 HB, MPa HRC
    Rolled steel. Quenching in oil from 810-840 °C to + Leave at 150 °C, air cooling
    ≤25 - - 1960-2350 - - 290-690 - 61-65
    Rolled steel. Quenching in oil from 820 °C to + Vacation
    - 160 2250-2370 1960-2350 - - - - 62-65
    Rolled steel. Annealing at 790-810 °C, cooled with the furnace to 730 °C, from 730 to 650 °C cooling at a speed of 10-20 °C/h, then in air (isothermal annealing)
    ≤50 - 370-410 590-730 15-25 35-55 ≥432 179-217 -
    Rolled steel. Quenching in oil from 820 °C to + Vacation
    - 200 2130-2280 2160-2550 - - - - 60-62
    - 250 2120-2200 - - - - - 59-61
    - 300 1860-2040 - - - - - 58-59
    - 330 1850-1950 - - - - - 56-57

    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
    HB Brinell hardness number
    HRC Rockwell hardness (indenter diamond spheroconical)

    Physical characteristics

    Temperature Е, HPa G, HPa r, kg/m3 a, 10-6 1/°C
    0 211 79 7650 -
    20 211 - 7650 -
    200 - - - 134
    300 - - - 134
    500 - - - 136

    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
    R UD. the resistivity

    Technological properties

    Name The value
    Weldability The method of welding the CCC.
    Склонность к отпускной хрупкости Inclined.
    The temperature of forging Start - 1150 °C, the end - of 800 °C. the cross Sections up to 250 mm are cooled in air, 251-350 mm - in the pit.
    Flock-sensitive sensitivity Sensitive.
    Machinability In hot-rolled condition, when blower SB 202 HB=740 MPa Kn TV.SPL.=0,90 Kn b.St.=0,36.