Steel 40Г18Ю3Ф (Ю3Ф)

  • Steel E
  • B Steel
  • Steel D27
  • D27S steel
  • Steel D32
  • D36 steel
  • Steel D40
  • D40S steel
  • A40 steel
  • E27 Steel
  • E27S Steel
  • E32 steel
  • E36 Steel
  • E40 steel
  • E40S steel
  • X18G13AN4 steel
  • Steel D
  • Steel 40G18Yu3F (Yu3F)
  • 08Cr18Ni10Gt steel
  • Steel 12G2MFT
  • 12X18H10GT steel
  • Steel 18Х20Н13 (ЭИ997)
  • Steel 25KhGMNTBA (25KhG2MNTBA)
  • Steel 26G2STa
  • Steel 28ХГНМФД
  • 38Kh3M1F1A steel
  • A40S steel
  • Steel 45Г17Ю3 (Ю3; ЭИ839)
  • Steel 50G23Kh4FV7 (48VNNK-2)
  • Steel 80G20F2Yu (F2)
  • Steel A
  • A27S steel
  • A32 steel
  • A36 steel

    • Designation

    Name The value
    Designation GOST Cyrillic 40Г18Ю3Ф
    Designation GOST Latin 40G18Ju3F
    Transliteration 40G18Yu3F
    By chemical elements 40Mn18Al3V
    Name The value
    Designation GOST Cyrillic Ю3Ф
    Designation GOST Latin Ju3F
    Transliteration Yu3F
    By chemical elements Al3V

    Description

    40Г18Ю3Ф steel is used: for the manufacture of long products and forgings; hull structures of ships, vessels and goods marine equipment with static and cyclic loads without friction (shafts, spindles, axles, worm and gear wheels of low-speed mechanisms, hubs, couplings, power studs, springs, Cams, fingers, parts of motors).

    Note

    Low austenitic steel.
    Steel is not intended for use in aggressive environments.
    Steel dispersion-hardened state has a low frictional properties and wear resistance and friction is not applied.
    Magnetic permeability μ ≤ 1,01 GS/e and is almost constant in any thermal and thermomechanical processing.
    High strength steel is provided by heat treatment due to the dispersion hardening — selection of dispersed carbides of vanadium.

    Standards

    Name Code Standards
    Castings, non-ferrous metals and alloys В84 RD 9257-76
    Bars and shapes В32 TU 14-1-1773-76

    Chemical composition

    Standard C S P Mn Cr Si Ni Fe Al V
    TU 14-1-1773-76 0.35-0.45 ≤0.03 ≤0.04 17.5-19.5 ≤0.5 ≤0.6 ≤0.5 Rest 2.6-3.5 1-1.3
    RD 9257-76 0.35-0.45 ≤0.03 ≤0.04 17.5-19.5 ≤0.5 ≤0.6 ≤0.5 Rest 2.6-3.5 1-1.3
    Fe is the basis.

    Mechanical properties

    Section, mm sT|s0,2, MPa σU, MPa d5, % y, %
    Forged round and square. Quenching in water from 1120 °C to + Vacation at 675 °C, air cooling
    100-180 ≥687 ≥834 ≥10 ≥15
    Long products hot-rolled steel. Without heat treatment
    30-70 ≥687 ≥834 ≥10 ≥15

    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

    Physical characteristics

    Temperature Е, HPa r, kg/m3 l, W/(m · °C) R, Mr. · m a, 10-6 1/°C С, J/(kg · °C)
    20 1716 7550 - 950 - -
    200 - - 1633 - 1840 -
    300 - - 1842 - 1940 -
    400 - - 2051 - 2030 -
    500 - - 2261 - 2120 -
    600 - - 2470 - 2150 -
    100 - - - - 1700 5443
    700 - - - - 2200 -

    A description of the physical symbols

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

    Technological properties

    Name The value
    Weldability steel is not welded.
    Machinability The complexity of drilling, and turning of steel Ю3Ф in the initial state without heat treatment at 50% less than steel Ю45Г17Ю3 (Yu3), and in face milling for 20% less. The machinability of the steel after heat treatment 15% lower than that of steel 45Г17Ю3 (Yu3).