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PRODUCT DATA of Inconel X-750
MaterialInconel X-750
Product DatasheetInconel alloy X-750
General InformationInconel X-750 is a high-strength oxidation-resistant nickel-base alloy. It is used for parts requiring high strength up to 538 C or high creep strength up to 815 C and for low -stressed parts operating up to 1038 C. It is hardenable by various combinations of solution treatment and aging, depending on its form and application.
PrecautionsTypical data in the overaged condition
Chemical CompositionNi-16Cr-8Fe-1Co-1Nb-2.5Ti
EXPERIENCE IN PRACTICE
Development StatusCommercial Product
Equivalent DesignationsHaynes X-750; Pyromet X-750
PHYSICAL PROPERTIES
Specific Gravity8.26
Curie Temperature-125 C
Remark:heat treated In hot rolled cond: -143C
Relative Permeability1
Remark:Heat treated condition
Data Quality: Manufacturer's data
ELASTIC PROPERTIES
Tensile Modulus214 GPa
Poisson Ratio0.29
ELECTRICAL PROPERTIES
Electrical Volume Resistivity0.00000121 ohm.m
Data Quality: Manufacturer's data
THERMAL PROPERTIES
Thermal Conductivity12 W/m.K
Data Quality: Manufacturer's data
Thermal Expansion Coefficient10.2 μstrain/°C
Data Quality: Manufacturer's data
Melting Range1400 to 1430 °C
Specific Heat0.419 J/g.K
Data Quality: Manufacturer's data
RELEVANT PROPERTIES FOR USE IN SPACE COMMUNITY
Stress Corrosion StatusHigh Resistance to SCC: Table 1
Data Quality: Design Data
Bimetallic CorrosionCan be connected without any restriction to: 400 series Stainless steel
Can be connected in a non-controlled environment to the above and 300 series stainless steel, Ti and Ti-alloys, Cr, Cu, brasses, Cu-Ni, Al-bronzes, Si-bronzes,
Can be connected in a clean room environment to above and Ag, SnPb alloys, Sn, Pb, low C steel, Al-Cu alloys, Cd, Au
Needs specific measures: All others
Test:ECSS-Q-ST-70C Rev.1 Table 5.1
Data Quality: Design Data
MachinabilityX-750 work hardens quickly and is more difficult to machine than most standard ferritic and martensitic alloys. The alloy is most easily machined in the stress-equalized
WeldingX-750 should be welded in the stress-equalized condition, 885°C heat treatment, and solution treated and age hardened after welding has been completed.