Alloy KHN70JU (ЭИ652)

  • 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 ХН70Ю
    Designation GOST Latin XH70Ju
    Transliteration HN70Yu
    By chemical elements CrNi70Al
    Name The value
    Designation GOST Cyrillic ЭИ652
    Designation GOST Latin EI652
    Transliteration EhI652
    By chemical elements -

    Description

    Alloy KHN70JU applies: for production of components of gas pipeline systems and various parts operating at moderate voltages, at 1100−1200 °C (can be applied to the heating resistance elements); a welding wire used for welding parts and welding of steel structures in energy engineering; welding electrodes; welding parts and assemblies working in radioactive environments, connections of details from alloy grade 46ХНМ (ЭП630) with details of korrozionnostojkih steel type 12X18H10T, 10X17H13M2T.

    Note

    Alloy, heat-resistant and heat-resistant Nickel-based.
    The recommended maximum operating temperature for a long time +1200 °C, for a limited time +1100 °C.
    The temperature of beginning of intensive scaling in air — up to +1200 °C.
    Alloy KHN70JU unstable in sulfur-containing environments.

    Standards

    Name Code Standards
    Sheets and strips В33 GOST 24982-81, TU 14-1-1909-76, TU 14-134-255-90, TU 14-1-493-72
    Classification, nomenclature and General rules В30 GOST 5632-72
    Blanks. Of the workpiece. Slabs В31 OST 3-1686-90, TU 14-1-1214-75
    Welding and cutting metals. Soldering, riveting В05 OST 95 10441-2002, TU 14-1-997-74, TU 14-1-997-2012
    Bars and shapes В32 TU 14-1-1497-75, TU 14-11-245-88
    Tape В34 TU 14-1-833-74
    Wire, steel, alloy В73 TU 14-131-820-90

    Chemical composition

    Standard C S P Mn Cr Si Ni Fe Cu Al Ti Mo Ce Ba
    TU 14-1-997-74 ≤0.1 ≤0.012 ≤0.015 ≤0.3 26-29 ≤0.8 Rest ≤1 ≤0.07 2.8-3.5 - - ≤0.03 ≤0.1
    GOST 5632-72 ≤0.1 ≤0.012 ≤0.015 ≤0.3 26-29 ≤0.8 Rest ≤1 ≤0.3 2.8-3.5 ≤0.2 ≤0.3 ≤0.03 ≤0.1
    Ni is the basis.

    Mechanical properties

    Section, mm sT|s0,2, MPa σU, MPa d5, % d4
    Steel cold-rolled sheet (0.8 to 3.9 mm) and HR (2.0 to 3.9 mm) in the delivery state according to GOST 24982-81. Quenching in water, under a water shower or air from 1100-1150 °C
    ≤3.9 - ≥100 ≥25 -
    Pre-painted steel sheet. Annealing in air from 1100 °C
    - ≥480 ≥880 - ≥35
    Steel cold-rolled sheet (0.8 to 3.9 mm) and HR (2.0 to 3.9 mm) in the delivery state according to GOST 24982-81. Quenching in water, under a water shower or air from 1100-1150 °C
    ≤3.9 - ≤980 ≥30 -
    Pre-painted steel sheet. Annealing in air from 1100 °C
    - ≥490 ≥880 - ≥37
    Steel cold-rolled sheet (0.8 to 3.9 mm) and HR (2.0 to 3.9 mm) in the delivery state according to GOST 24982-81. Quenching in water, under a water shower or air from 1100-1150 °C
    ≤3.9 - ≥100 ≥40 -
    Pre-painted steel sheet. Annealing in air from 1100 °C
    - ≥370 ≥760 - ≥37
    - ≥360 ≥730 - ≥35
    - ≥320 ≥480 - ≥37
    - ≥170 ≥225 - ≥38
    - - ≥145 - ≥50
    - - ≥88 - ≥61

    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
    d4 Elongation after rupture

    Physical characteristics

    Temperature Е, HPa r, kg/m3 l, W/(m · °C) a, 10-6 1/°C
    0 191 7900 12 -
    20 191 7900 117 -
    100 182 - 13 1314
    200 173 - 14 1386
    300 166 - 16 1476
    400 156 - 17 1568
    500 147 - 19 1639
    600 137 - 21 1781
    700 118 - 23 2242
    800 94 - 25 2547
    900 - - 269 2134
    1000 - - - 2121

    A description of the physical symbols

    Name Description
    Е The normal elasticity modulus
    r Density
    l Coefficient of thermal conductivity
    R UD. the resistivity
    a The coefficient of linear expansion

    Technological properties

    Name The value
    Weldability limited weldability, manual argon arc welding with non-consumable electrode (filler or without filler metal), use of combined methods of welding. Requires selection of special modes in the weld joint has high strength.
    The temperature of forging Start - 1200 °C, the end - 1100 °C. air Cooling.