Cast iron VCH70

  • Cast iron VCh100
  • Crude iron VCh35
  • Cast iron VCh40
  • Crude iron VCh45
  • Cast iron VCh50
  • Cast iron VCh60
  • Crude iron VC70
  • VCh80 cast iron
  • Cast Iron MN
  • Cast iron MN40-10

    • Designation

    Name The value
    Designation GOST Cyrillic ВЧ70
    Designation GOST Latin BCh70
    Transliteration VCh70
    By chemical elements -

    Description

    Cast iron VCH70 used: for the manufacture of products with high strength and satisfactory ductility.

    Standards

    Name Code Standards
    Cast iron В11 GOST 7293-85

    Chemical composition

    Standard C S P Mn Cr Si Ni Fe Cu
    GOST 7293-85 3.2-3.6 ≤0.015 ≤0.1 0.4-0.7 ≤0.15 2.6-2.9 ≤0.6 Rest ≤0.4
    Fe is the basis.
    According to GOST 7293-85 the chemical composition is given for castings with wall thickness up to 50 mm inclusive. For castings with a wall thickness exceeding 50 to 100 mm, the recommended content is C = 3.00-3.30%, Si = 2.60-2.90%.

    Mechanical properties

    sT|s0,2, MPa σU, MPa d HB, MPa
    Castings on OST 1 90077-72
    ≥420 ≥700 ≥2 228-302

    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