Steel 15KH6SJU (ЭИ428)

  • Steel 10Х13СУ (ЭИ404)
  • Steel 15Kh18SU (EI484)
  • Steel 15Kh6Su (EI428)
  • Steel 20X23H13 (EI319)
  • Steel 20Х25Н20С2 (ЭИ283)
  • Steel 30Х13Н7С2 (ЭИ72)
  • Steel 36Х18Н25С2 (4Х18Н25С2)

    • Designation

    Name The value
    Designation GOST Cyrillic 15Х6СЮ
    Designation GOST Latin 15X6CJu
    Transliteration 15H6SYu
    By chemical elements 15Cr6СAl
    Name The value
    Designation GOST Cyrillic ЭИ428
    Designation GOST Latin EI428
    Transliteration EhI428
    By chemical elements -

    Description

    15KH6SJU steel is used: for the manufacture of parts of boilers and pipes.

    Note

    Temperature intense scaling in air +800 °C.
    Stable in sulfur-containing environments.

    Standards

    Name Code Standards
    Classification, nomenclature and General rules В30 GOST 5632-72
    Bars and shapes В32 GOST 5949-75, TU 14-11-245-88
    Blanks. Of the workpiece. Slabs В31 OST 3-1686-90

    Chemical composition

    Standard C S P Mn Cr Si Ni Fe Cu Al V Ti Mo W
    GOST 5632-72 ≤0.15 ≤0.025 ≤0.03 ≤0.5 5.5-7 1.2-1.8 ≤0.6 Rest 0.3 0.7-1.1 ≤0.2 ≤0.2 ≤0.3 ≤0.2
    Fe is the basis.

    Mechanical properties

    Section, mm sT|s0,2, MPa σU, MPa d5, % y, %
    Bars hot rolled and forged according to GOST 5949-75. Annealing at 750-780 °C, cooling in air or in oil
    ≥245 ≥440 ≥20 ≥40

    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