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Haynes X-750 Nickel Alloy Sheet and Strip (AMS 5598, UNS N07750)
Categories: Metal; Nonferrous Metal; Nickel Alloy
Material Notes: Haynes X-750 (UNS No. N07750) alloy is an age-hardenable, superalloy with very good strength at temperatures up to about 1600°F (870°C). It is widely used as a wrought material for forged and fabricated parts in aerospace and industrial applications. Its strength is somewhat less that that for Haynes 718 alloy up to about 1400°F (760°C), and lower than that for Haynes R-41 alloy at higher temperatures. Alloy X-750 can be cold-formed in the annealed condition, and may also be hot-formed at temperatures of about 1900°F (1040°C) or above. Weldability is somewhat limited by susceptibility to strain age cracking under conditions of heavy restraint. The alloy exhibits good resistance to oxidizing combustion gas environments at temperatures up to about 1600°F (870°C).

Property data for samples Heat-treated at 1900°F(1040°C) and 1350°F(730°C)/8hr/FC to 1150°F(620°C)/8hr/AC.

Data provided by the manufacturer, Haynes International, Inc.
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Physical PropertiesOriginal ValueComments
Density 8.26 g/cc
 
Mechanical PropertiesOriginal ValueComments
Tensile Strength, Ultimate 115 MPa
@Temperature 980 °C
 360 MPa
@Temperature 870 °C
 650 MPa
@Temperature 760 °C
 990 MPa
@Temperature 650 °C
 1120 MPa
@Temperature 540 °C
 1325 MPa
@Temperature 25.0 °C
Tensile Strength, Yield 63.0 MPa
@Strain 0.2 %,
Temperature 980 °C
 295 MPa
@Strain 0.2 %,
Temperature 870 °C
 635 MPa
@Strain 0.2 %,
Temperature 760 °C
 835 MPa
@Strain 0.2 %,
Temperature 650 °C
 860 MPa
@Strain 0.2 %,
Temperature 540 °C
 975 MPa
@Strain 0.2 %,
Temperature 25.0 °C
Elongation at Break 2.5 %
@Temperature 760 °C		2-inch (51 mm) sample
 5.8 %
@Temperature 650 °C		2-inch (51 mm) sample
 8.0 %
@Temperature 870 °C		2-inch (51 mm) sample
 22.2 %
@Temperature 540 °C		2-inch (51 mm) sample
 23.6 %
@Temperature 25.0 °C		2-inch (51 mm) sample
 42 %
@Temperature 980 °C		2-inch (51 mm) sample
Rupture Strength 45.0 MPa
@Temperature 925 °C,
Time 36000 sec		Initial Stress
 46.0 MPa
@Temperature 870 °C,
Time 360000 sec		Initial Stress
 51.0 MPa
@Temperature 815 °C,
Time 3.60e+6 sec		Initial Stress
 86.0 MPa
@Temperature 870 °C,
Time 36000 sec		Initial Stress
 97.0 MPa
@Temperature 815 °C,
Time 360000 sec		Initial Stress
 105 MPa
@Temperature 760 °C,
Time 3.60e+6 sec		Initial Stress
 165 MPa
@Temperature 815 °C,
Time 36000 sec		Initial Stress
 180 MPa
@Temperature 760 °C,
Time 360000 sec		Initial Stress
 200 MPa
@Temperature 705 °C,
Time 3.60e+6 sec		Initial Stress
 285 MPa
@Temperature 760 °C,
Time 36000 sec		Initial Stress
 310 MPa
@Temperature 705 °C,
Time 360000 sec		Initial Stress
 345 MPa
@Temperature 650 °C,
Time 3.60e+6 sec		Initial Stress
 420 MPa
@Temperature 705 °C,
Time 36000 sec		Initial Stress
 455 MPa
@Temperature 650 °C,
Time 360000 sec		Initial Stress
 490 MPa
@Temperature 600 °C,
Time 3.60e+6 sec		Initial Stress
 550 MPa
@Temperature 650 °C,
Time 36000 sec		Initial Stress
 585 MPa
@Temperature 600 °C,
Time 360000 sec		Initial Stress
 825 MPa
@Temperature 600 °C,
Time 36000 sec		Initial Stress
Modulus of Elasticity 138 GPa
@Temperature 1000 °C		Dynamic
 152 GPa
@Temperature 900 °C		Dynamic
 165 GPa
@Temperature 800 °C		Dynamic
 176 GPa
@Temperature 700 °C		Dynamic
 184 GPa
@Temperature 600 °C		Dynamic
 189 GPa
@Temperature 400 °C		Dynamic
 201 GPa
@Temperature 200 °C		Dynamic
 214 GPa
@Temperature 20.0 °C		Dynamic
 
Electrical PropertiesOriginal ValueComments
Electrical Resistivity 0.000121 ohm-cm
@Temperature 20.0 °C
 0.000124 ohm-cm
@Temperature 200 °C
 0.000125 ohm-cm
@Temperature 400 °C
 0.000126 ohm-cm
@Temperature 900 °C
 0.000128 ohm-cm
@Temperature 800 °C
 0.000129 ohm-cm
@Temperature 700 °C
 0.000130 ohm-cm
@Temperature 600 °C
 
Thermal PropertiesOriginal ValueComments
CTE, linear 14.3 µm/m-°C
@Temperature 20.0 - 500 °C
 14.8 µm/m-°C
@Temperature 20.0 - 600 °C
 15.5 µm/m-°C
@Temperature 20.0 - 700 °C
 16.3 µm/m-°C
@Temperature 20.0 - 800 °C
 17.4 µm/m-°C
@Temperature 20.0 - 900 °C
 17.9 µm/m-°C
@Temperature 20.0 - 1000 °C
Thermal Conductivity 14.1 W/m-K
@Temperature 200 °C
 16.9 W/m-K
@Temperature 400 °C
 19.8 W/m-K
@Temperature 600 °C
 21.3 W/m-K
@Temperature 700 °C
 22.7 W/m-K
@Temperature 800 °C
 24.0 W/m-K
@Temperature 900 °C
Melting Point 1395 - 1425 °C
Solidus 1395 °C
Liquidus 1425 °C
Maximum Service Temperature, Air 1600 °F
 
Component Elements PropertiesOriginal ValueComments
Aluminum, Al 0.80 %
Carbon, C <= 0.080 %
Chromium, Cr 16 %
Cobalt, Co <= 1.0 %
Iron, Fe 8.0 %
Manganese, Mn <= 0.35 %
Nickel, Ni 70 %as balance
Niobium, Nb (Columbium, Cb) 1.0 %
Silicon, Si <= 0.35 %
Titanium, Ti 2.5 %

Some of the values displayed above may have been converted from their original units and/or rounded in order to display the information in a consistent format. Users requiring more precise data for scientific or engineering calculations can click on the property value to see the original value as well as raw conversions to equivalent units. We advise that you only use the original value or one of its raw conversions in your calculations to minimize rounding error. We also ask that you refer to MatWeb's terms of use regarding this information. Click here to go back to viewing the property data in MatWeb's normal format.

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