Steel S440

  • C375 steel
  • C590K steel
  • C590 steel
  • C440D steel
  • C440 steel
  • C390K steel
  • C390D steel
  • C390 steel
  • C375D steel
  • C345K steel
  • C345D steel
  • C345 steel
  • C285 steel
  • C275 steel
  • C255 steel
  • C245 steel
  • C235 steel

    • Designation

    Name The value
    Designation GOST Cyrillic С440
    Designation GOST Latin C440
    Transliteration S440
    By chemical elements -

    Description

    Steel S440 is used: for the manufacture of hot-rolled structural shapes (angles, I-beams, channels), sheet, universal broadband rental and roll-formed profiles designed for construction of steel structures with welded and other connections.

    Standards

    Name Code Standards
    Classification, nomenclature and General rules В20 GOST 27772-88

    Chemical composition

    Standard C S P Mn Cr Si Ni Fe Cu N As V
    GOST 27772-88 ≤0.2 ≤0.04 ≤0.035 1.3-1.7 ≤0.4 ≤0.6 ≤0.3 Rest ≤0.3 0.015-0.025 ≤0.08 0.08-0.14
    Fe is the basis.
    According to GOST 27772-88, the mass fraction of arsenic does not exceed 0.15% in the smelting of steel from Kerch ore, while the mass fraction of phosphorus should not be more than 0.030%. At the request of the consumer in steel, the mass fraction of phosphorus should not be more than 0.030%, and sulfur - not more than 0.035%.

    Mechanical properties

    Section, mm sT|s0,2, MPa σU, MPa d5, % KCU, kJ/m2
    Plates and wide universal rental in the state of delivery (KCU-70 °C)
    30-50 ≥410 ≥570 ≥20 ≥294
    4-30 ≥440 ≥590 ≥20 ≥294

    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
    KCU Toughness

    Technological properties

    Name The value
    Weldability without restrictions