Alloy KHN45JU (ЭП747)

  • Alloy 05KhN46MVBh (DI65)
  • Alloy KhN30VMT (EP437; VZH102)
  • Alloy KhN30TDU (EP655; VNS12)
  • Alloy KhN38VT (EI703)
  • Alloy KhN45TU (EK101; VKS-46)
  • Alloy KhN45Yu (EP747)
  • Alloy KhN50MVKTYR (EP99)
  • Alloy CrN60VT (EI868; VZh98)
  • Alloy KhN60Yu (EI559A)
  • Alloy KhN70Yu (EI652)
  • Alloy KhN75MBTU (EI602)
  • Alloy KhN77TU (EI437A)
  • Alloy CrN78T (EI435)
  • Alloy EC79

    • Designation

    Name The value
    Designation GOST Cyrillic ХН45Ю
    Designation GOST Latin XH45Ju
    Transliteration HN45Yu
    By chemical elements CrNi45Al
    Name The value
    Designation GOST Cyrillic ЭП747
    Designation GOST Latin EP747
    Transliteration EhP747
    By chemical elements -

    Description

    Alloy KHN45JU used: for the production of commercials slot furnaces; furnace conveyor belts; parts of burners, thermocouple sheaths, sheet, and tubular parts of furnaces and other parts for continuous operation at temperatures of 1250−1300 °C; cold-deformed tubes for the production of thermoelectric thermometers used in blast furnaces and other industries, for use at temperatures up to 1300 °C; tube clips.

    Note

    Alloy heat-resisting and high-temperature for iron-Nickel basis.
    The recommended maximum operating temperature for a long time + 1250−1300 °C.
    It is recommended to replace the alloy KHN78T.

    Standards

    Name Code Standards
    Sheets and strips В33 GOST 24982-81, TU 14-1-2601-79, TU 14-1-2602-79
    Classification, nomenclature and General rules В30 GOST 5632-72
    Blanks. Of the workpiece. Slabs В31 OST 3-1686-90, TU 14-1-1214-75, TU 14-1-4082-86
    Tape В34 TU 14-1-2075-87
    Bars and shapes В32 TU 14-1-941-74, TU 14-11-245-88
    Steel pipes and fittings to them В62 TU 14-3-1371-86

    Chemical composition

    Standard C S P Mn Cr Si Ni Fe Cu Al Ti Mo Ce Ba
    TU 14-3-1371-86 ≤0.1 ≤0.02 ≤0.025 ≤1 15-17 ≤1 44-46 Rest - 2.9-3.9 - - ≤0.03 ≤0.1
    GOST 5632-72 ≤0.1 ≤0.02 ≤0.025 ≤1 15-17 ≤1 44-46 Rest ≤0.3 2.9-3.9 ≤0.2 ≤0.3 ≤0.03 ≤0.1
    Ni is the basis.
    According to TU 14-1-941-74, TU 14-1-4082-86 the chemical composition is given for an alloy of grade ХН45Ю (ЭП747). Barium, cerium are introduced into the metal by calculation and chemical analysis is not determined.

    Mechanical properties

    Section, mm sT|s0,2, MPa σU, MPa d5, % y, %
    Steel cold-rolled sheet (0.8 to 3.9 mm) and HR (2.0 to 11.0 mm) in the delivery state according to GOST 24982-81. Quenching in water, under a water shower or air 1060-1100 °C
    0.8-11 - ≥590 ≥30 -
    Bars hot rolled on the other 14-1-941-74. The longitudinal samples. Annealing in air from 1050-1150 °C
    ≥215 ≥590 ≥15 ≥20
    Rolled steel. Hardening from 1050-1150 °C
    8-10 ≥216 ≥590 ≥15 ≥20
    Tubular billet on the other 14-1-4082-86. The longitudinal samples. Annealing in air 1130-1180 °C
    - ≥540 ≥35 -
    Seamless cold-worked tubes heat-treated and etched, as supplied on the other 14-3-1371-86
    - ≥591 ≥35 -

    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) a, 10-6 1/°C
    20 207 7760 - -
    100 201 - 105 158
    200 192 - 122 159
    300 187 - 138 1595
    400 178 - 154 1655
    500 171 - 175 166
    600 156 - 192 19
    700 - - - 197

    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
    Macrostructure and pollution In the macrostructure are not allowed the remnants of shrinkage, Pousada looseness, Pousada heterogeneity, light and dark crusts, foreign metal and non-metallic inclusions, subcortical bubbles, cracks, Sakova, delamination, visible to the naked eye.