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      Hastelloy X (UNS NO6002)

      Hastelloy X (UNS NO6002)
      Hastelloy X Features and Applications Overview:
      The alloy is a nickel-based superalloy with a relatively high iron content which is mainly solid-solution strengthened with chromium and molybdenum and has good oxidation and corrosion resistance. The alloy has moderate to long lasting and creep strength below 900 ° C, Hot workability and weldability are good. Suitable for the manufacture of aeroengine combustion chamber components and other high temperature components, long-term use below 900 ℃, short-term operating temperature of 1080 ℃.
      Hastelloy X Similar Grades:
      GH3536 GH536 (China), NC22FeD (France), NiCr22FeMo (Germany), Nimonic PE13 (UK)
      Hastelloy X Chemical composition:


      Alloy
      Grade

      %

      Ni

      Cr

      Fe

      Mo

      W

      Co

      C

      Mn

      Si

      S

      Cu

      Al

      Ti

      Hastelloy X

      Min

      Margin

      20.5

      17.0

      8.0

      0.2

      0.5

      0.05







      Maximum

      23.0

      20.0

      10.0

      1.0

      2.5

      0.15

      1.0

      1.0

      0.015

      0.5

      0.15

      0.5

      Hastelloy X Physical Properties:

      Density
      g/cm3

      Melting point

      Thermal conductivity
      λ/(W/m•℃)

      Specific heat capacity
      J/kg•℃

      Elastic Modulus
      GPa

      Shear modulus
      GPa

      Resistivity
      μΩ•m

      Poisson's ratio

      Linear expansion coefficient
      a/10-6℃-1

      8.28

      1295
      1381

      13.38(100℃)

      372.6

      199


      1.18


      12.1(20~100℃)

      Hastelloy X Mechanical Properties: (minimum mechanical properties measured at 20 ° C):

      Heat treatment methods

      Tensile strengthσb/MPa

      Yield Strengthσp0.2/MPa

      Elongationσ5 /%

      Brinell hardness HBS

      Solution treatment

      690

      275

      30

      ≥241

      Hastelloy X Production Executive Standard:

      Standard

      Bar

      Forgings

      Plate (with) material

      Wire

      Pipe

      American Society for Testing and Materials

      ASTM B572


      ASTM B435


      ASTM B622
      ASTM B619
      ASTM B626

      American Aerospace Materials Technical Specification

      AMS 5754

      AMS 5754

      AMS 5536

      AMS 5798

      AMS 5587

      American Society of Mechanical Engineers

      ASME SB572


      ASME SB435


      ASTM SB622
      ASTM SB619
      ASTM SB626

      Hastelloy X Metallography Organization:
      The alloy in the solution state of the organization of austenitic matrix, there are a small amount of TiN and M6C carbide.
      Hastelloy X process performance and requirements:
      1, the alloy has good cold and hot processing performance, forging heating temperature 1170 ℃.
      2, the average grain size of the alloy and forging deformation degree, the final forging temperature is closely related.
      3, the alloy has a satisfactory welding performance, available welding, seam welding, spot welding and other methods of welding.
      4, the alloy can be directly added to the furnace has been warmed to the highest operating temperature. Immediately after the necessary time in the heat baked, processed to the specified specifications. If the metal temperature below the minimum processing temperature need to re-heat.
      5, the surface of the alloy oxide and welding slag around the weld adhesion stronger than stainless steel, it is recommended to use fine crystal belt or fine grinding wheel for grinding.


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