Inconel® X750 Strip UNS N07750

INCONEL X-750 strip is an alloy that excels in applications demanding high strength at high temperatures and a high relaxation resistance. It's a precipitation-hardenable nickel-chromium alloy with excellent corrosion and oxidation resistance.
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INCONEL® X750 ALLOY DESCRIPTION

Inconel® X750 is a nickel-chromium alloy made precipitation-hardenable by the additions of Titanium and aluminum, having high creep-rupture strength at high temperatures to about 130.0°F (700°C). It also has excellent properties down to cryogenic temperatures. Excellent corrosion and oxidation resistance and high strength at temperatures up to 1300°F. X-750 is used in applications such as gas turbines, rocket engine thrust chambers, as well as springs & fasteners where it operates from cryogenic temperatures to 1300°F. Inconel X 750 is resistant to a wide variety of industrial corrosives under both oxidizing and reducing conditions. This alloy also has excellent resistance to chloride stress corrosion cracking in the fully age hardened condition.


Inconel X750 APPLICATIONS

Chemical Composition of Inconel X750

Nickel + Cobalt: 70.00 min
Chromium: 14.0-17.0
Iron: 5.0-9.0
Titanium: 2.25-2.75
Aluminum: 0.40-1.00
Columbium + Tantalum: 0.70-1.20
Manganese: 1.00 max.
Silicon: 0.50 max.
Sulfur: 0.01 max.
Copper: 0.50 max.
Carbon: 0.08 max.
Cobalt: 1.00 max

PHYSICAL PROPERTIES

Density: 0.299 lbs/in³, 8.28 g/cm³

Mean Coefficient of Thermal Expansion: in/in/°F (mm/m/°C):

70-212°F (20-100°C) 7.0 x 10 (12.0)

Modulus of Elasticity: KSI (MPa)

31.0 x 10³(213.7 x 10³) in tension
11.0 X 10³ (75.8 x 10³) in torsion

Melting Range: 2540-2600°F (1393-1427°C)

MECHANICAL PROPERTIES AT ROOM TEMPERATURE

PROPERTIES: ANNEALED TYPICAL

Ultimate Tensile Strength
135 KSI max (930 MPa): gauges < 0.040 inches
145 KSI max (10000 MPa): gauges 0.040- 0.060 inches
150KSI max (1034 MPa): gauges > 0.060 inches
Elongation: 20% min

PROPERTIES: TEMPERED


Alloy X750 can be cold rolled
to achieve the temper properties required by specific customers and/or manufacturing requirements. Contact Ulbrich for details.

Inconel X-750 HEAT TREATMENT


Inconel X750 can be heat treated.
Contact Ulbrich for additional information

Welding Inconel X750

Inconel X-750 should be welded in the stress-equalized condition, 1625°F (885°C) heat treatment, and solution treated and age hardened after welding has been completed. If this is not practical, the Nickel alloy should be welded in the solution-treated condition and age hardened after welding with or without the inclusion of a short-period stress-relieving treatment at 1625°F. Weld joints, because of softening of the alloy within the heat-affected zone, should be located where lower creep properties are required.

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