Steel 3Х2В8Ф

  • Steel 17Х5В3МФ5С2 (DI90)
  • 3X2V8F steel
  • 3X2H2MVF steel
  • Steel 40Kh5MF
  • Steel 4Х3М2ВФГС (DI41)
  • Steel 4X8V2 (EI160)
  • 4XV2S steel
  • 5X2GSMF steel
  • 5XV2S steel
  • 5XGM steel
  • 5KhGSMF steel
  • X12VM steel
  • Steel X12M (X12ML)
  • X6F1 steel

    • Designation

    Name The value
    Designation GOST Cyrillic 3Х2В8Ф
    Designation GOST Latin 3X2B8F
    Transliteration 3H2V8F
    By chemical elements 3Cr2W8V

    Description

    3Х2В8Ф steel is used: for the manufacture of heavy-duty press tool (small inserts final stamping of the stream of matrices and punches for extrusion, etc.) during hot deformation of alloyed structural steels and heat-resistant alloys; molds of pressure casting of copper alloys.

    Standards

    Name Code Standards
    Bars and shapes В22 GOST 1133-71, GOST 2590-2006, GOST 2591-2006
    Sheets and strips В33 GOST 4405-75, TU 14-131-971-2001
    Bars and shapes В32 GOST 7417-75, GOST 8559-75, GOST 8560-78, GOST 14955-77, TU 14-1-335-72, TU 14-19-31-87, TU 14-11-245-88, TU 14-1-5243-93
    Blanks. Of the workpiece. Slabs В31 OST 24.952.01-89
    Processing of metals by pressure. Forgings В03 TU 14-1-1530-75

    Chemical composition

    Standard C S P Mn Cr Si Ni Fe Cu V Mo W
    TU 14-1-335-72 0.29-0.35 ≤0.03 ≤0.03 0.2-0.4 2.3-2.7 0.15-0.4 ≤0.35 Rest ≤0.3 0.2-0.4 ≤0.5 8-8.5
    Fe is the basis.

    Mechanical properties

    Section, mm t отпуска, °C sT|s0,2, MPa σU, MPa d5, % y, % KCU, kJ/m2 HRC
    Rolled steel. Quenching in oil from 1130 °C to + Vacation at 650 °C (exposure 2 hours) (longitudinal samples)
    - ≥1390 ≥1530 ≥12 ≥36 ≥200 -
    Rolled steel. Quenching in oil from 1130 °C to + Leave (exposure 2 hours) (longitudinal samples)
    - 600 - ≥1720 ≥10 ≥41 ≥200 ≥52
    - 625 ≥1460 ≥1640 ≥7 ≥28 ≥250 ≥50
    - 650 ≥1390 ≥1530 ≥12 ≥36 ≥200 ≥48
    - 675 ≥1310 ≥1430 ≥10 ≥36 ≥250 ≥45

    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
    HRC Rockwell hardness (indenter diamond spheroconical)

    Physical characteristics

    Temperature Е, HPa r, kg/m3 l, W/(m · °C) R, Mr. · m
    20 224 7820 - -
    100 218 - 25 250
    200 211 - 27 200
    300 204 - 29 170
    400 196 - 40 140
    500 187 - 46 120
    600 177 - 50 -

    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 Does not apply to welded structures.
    Склонность к отпускной хрупкости Inclined.
    The temperature of forging Start - 1200 °C, the end of - 900 °C., Cooling to 750 °C in air, then in the sand.
    Flock-sensitive sensitivity Sensitive.
    Machinability At 200-220 HB and blower SB=710 MPa Kn TV.SPL.=0,9 Kn b.St.=0,45.