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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:
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Alloy
Grade
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%
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Ni
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Cr
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Fe
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Mo
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W
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Co
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C
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Mn
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Si
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S
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Cu
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Al
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Ti
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Hastelloy X
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Min
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Margin
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20.5
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17.0
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8.0
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0.2
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0.5
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0.05
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Maximum
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23.0
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20.0
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10.0
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1.0
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2.5
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0.15
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1.0
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1.0
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0.015
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0.5
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0.15
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0.5
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Hastelloy X Physical Properties:
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Density
g/cm3
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Melting point
℃
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Thermal conductivity
λ/(W/m•℃)
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Specific heat capacity
J/kg•℃
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Elastic Modulus
GPa
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Shear modulus
GPa
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Resistivity
μΩ•m
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Poisson's ratio
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Linear expansion coefficient
a/10-6℃-1
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8.28
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1295
1381
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13.38(100℃)
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372.6
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199
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1.18
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12.1(20~100℃)
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Hastelloy X Mechanical Properties: (minimum mechanical properties measured at 20 ° C):
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Heat treatment methods
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Tensile strengthσb/MPa
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Yield Strengthσp0.2/MPa
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Elongationσ5 /%
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Brinell hardness HBS
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Solution treatment
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690
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275
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30
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≥241
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Hastelloy X Production Executive Standard:
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Standard
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Bar
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Forgings
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Plate (with) material
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Wire
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Pipe
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American Society for Testing and Materials
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ASTM B572
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ASTM B435
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ASTM B622
ASTM B619
ASTM B626
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American Aerospace Materials Technical Specification
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AMS 5754
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AMS 5754
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AMS 5536
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AMS 5798
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AMS 5587
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American Society of Mechanical Engineers
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ASME SB572
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ASME SB435
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ASTM SB622
ASTM SB619
ASTM SB626
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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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