Alloy Grade UNS: N07718 – Resistant to Thermal Fatigue

  • Overview

    N07718 is a nickel-chromium superalloy renowned for its exceptional performance in high-temperature applications where thermal fatigue and creep resistance are critical. With a composition of up to 55% nickel and 21% chromium, this alloy exhibits high strength and excellent corrosion resistance across a wide temperature range, from cryogenic conditions (-423°F) to elevated temperatures (1300°F). Its resistance to thermal fatigue, meaning it can withstand repeated cycles of heating and cooling without cracking or degrading, makes it particularly well-suited for components in gas turbines, jet engines, and other high-temperature systems that experience rapid temperature fluctuations. Furthermore, N07718's exceptional rupture strength ensures long-term reliability and resistance to deformation under high stress at elevated temperatures.

  • Typical Uses

    Aerospace applications.

  • MetalTek Grade

    IN® 718

  • Poured At:

    Wisconsin Centrifugal Division, Wisconsin Investcast Division

Similar Specifications

Cast UNS: N07718

Wrought UNS: N07718

Wrought Grade: IN® 718

Cast Grade:

Cast ASTM: NACE MR0175

Military/AMS: AMS 5383

* AMS specifying investment casting.

Typical Chemical Composition (% by wt.)

Aluminum: n/a

Carbon: 0.02-0.08

Chromium: 17-21

Manganese: n/a

Iron: n/a

Copper: n/a

Nickel: 50-55

Lead: n/a

Tin: n/a

Silicon: n/a

Zinc: n/a

Other: Mo 2.8-3.3; Nb 4.75-5.40; Fe; Ti; AI; Co; Others

Minimum Mechanical Properties

Tensile, ksi

0

Tensile, MPa

0

Calculated PREn (Minimum)

0

Yield, ksi

0

Yield, MPa

0

Elongation

0%

Heat Treatment: Solution Anneal And Age

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