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Inconel X750

Product Details

Inconel X750

Inconel X-750 / Alloy X-750 / Nickel Alloy X-750 / N07750 / 2.4669 / NiCr15Fe7TiAl / GH4145 (China); also commonly referred to as a precipitation-hardenable nickel-chromium superalloy.

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Category

Nickel Alloy

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Grade

Inconel X-750 / UNS N07750 / 2.4669

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Standard

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Product Form

ASTM B637 / AMS 5667 / AMS 5698 / AMS 5542

Spring Wire / Bar / Rod / Forged Ring / Sheet / Strip / Coil / Bolts / Fasteners / Turbine Components

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Thickness

0.5–100 mm

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Width

1000–2500 mm

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Length

2000–6000 mm

Features

Inconel X-750 is a precipitation-hardenable nickel-chromium alloy designed to provide high mechanical strength, good corrosion resistance and excellent performance at elevated temperatures. Additions of titanium and aluminum enable precipitation strengthening through controlled heat treatment.

The alloy offers excellent resistance to oxidation and maintains useful tensile, creep and stress-rupture properties during prolonged high-temperature exposure. Its nickel-chromium base also provides good corrosion resistance in a wide range of industrial environments.

One of the important advantages of Inconel X-750 is its resistance to relaxation at elevated temperatures. This makes the alloy particularly suitable for springs, bolts, fasteners and other components that must maintain mechanical loading during prolonged thermal exposure.

Inconel X-750 is widely used in gas turbines, aircraft engines, nuclear equipment and rocket-engine systems. Typical components include high-temperature springs, turbine rotor parts, seals, bolts, fasteners and other highly stressed components.

Surface Finish

Bright / Pickled / Ground / Polished / Machined

Technique

Hot Rolled / Cold Drawn / Forged / Solution Treated / Age Hardened / Machined

Applications

Gas Turbines, Aircraft Engines, High-Temperature Springs, Turbine Rotors, Fasteners, Nuclear Components, Rocket Engines, Pressure Vessels



  • Excellent high-temperature strength

  • Precipitation-hardening capability

  • Excellent creep resistance

  • Good stress-rupture strength

  • Excellent resistance to stress relaxation

  • Good oxidation resistance

  • Good corrosion resistance

  • Good fatigue performance

  • Suitable for high-temperature springs

  • Widely used in aerospace and gas turbines

Chemical Composition (%)

Mechanical Properties (Typical)

Element

Composition (%)

Ni + Co

≥ 70.0

Cr

14.0–17.0

Fe

5.0–9.0

Ti

2.25–2.75

Al

0.40–1.00

Nb + Ta

0.70–1.20

Co

≤ 1.00

Mn

≤ 1.00

Si

≤ 0.50

Cu

≤ 0.50

C

≤ 0.08

S

≤ 0.010


Typical Room-Temperature Properties — Age-Hardened Condition

Property

Typical Value

Tensile Strength

Approx. 1,100–1,400 MPa

Yield Strength (0.2%)

Approx. 700–1,100 MPa

Elongation

Approx. 10–25%

Hardness

Approx. 300–400 HB

Density

Approx. 8.28 g/cm³

Melting Range

Approx. 1393–1427°C

Mechanical properties may vary significantly depending on product form, dimensions, heat-treatment condition, and applicable material specification.

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