Cast iron CHVG40

  • Cast iron CHVG30
  • Cast iron CHVG35
  • Cast iron CHVG40
  • Cast iron CHVG45

    • Designation

    Name The value
    Designation GOST Cyrillic ЧВГ40
    Designation GOST Latin ChBG40
    Transliteration ChVG40
    By chemical elements -

    Description

    Cast iron CHVG40 used: for the manufacture of parts for General machine building (instead of grey cast iron) working at high cyclic mechanical loads; parts of internal combustion engines that operate at variable elevated temperatures and mechanical loads; basic parts of machine tools, forging and pressing equipment, basic parts; parts for tractors makepreview; supporting components; cylinder heads; fasteners frames; retaining rings; gears of automobiles increased payload; brake levers for tractors; brake mounting brackets; fan cushions; connecting flanges; covers gear boxes; housings, covers and cylinder heads; housings of turbochargers; exhaust nozzles; wheel hubs; levers; V-shaped blocks 12-cylinder engines and blocks 6-cylinder engines; cap and cylinder heads and high-power marine diesel engines; brake discs for high speed trains; buildings exhaust valves; casings of gas turbines and compressors; molds, pallets, permanent mold and other tooling.

    Standards

    Name Code Standards
    Cast iron В11 GOST 28394-89

    Chemical composition

    Standard C S P Mn Cr Si Fe Cu Mg
    GOST 28394-89 3.1-3.5 ≤0.025 ≤0.08 0.4-1 ≤0.2 2-2.5 Rest 0.4-0.6 0.02-0.028
    Fe is the basis.
    According to GOST 28394-89 the chemical composition is given for cast iron of grade CVG40. The residual content of the sum of rare-earth elements (REM) in cast iron should be in the range of 0.10-0.20%.

    Mechanical properties

    Section, mm sT|s0,2, MPa σU, MPa d HB, MPa
    Cast iron in the cast state or after heat treatment in the state of delivery according to GOST 28394-89
    ≥320 ≥400 ≥1.5 170-220
    Given the influence of the wall thickness of the casting on the mechanical properties of CGI according to GOST 28394-89
    10 - ≥450 ≥3.8 ≥190
    100 - ≥350 ≥2.5 ≥160
    20 - ≥420 ≥3.5 ≥180
    30 - ≥400 ≥3 ≥170
    50 - ≥380 ≥2.8 ≥160

    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
    HB Brinell hardness number

    Physical characteristics

    Temperature Е, HPa r, kg/m3 l, W/(m · °C) a, 10-6 1/°C
    20 145-160 7200 37-41 -
    100 - - - 12-14

    A description of the physical symbols

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