Alloy Grade UNS: RENE® 77 – Nickel-Cobalt Vacuum Alloy

  • Overview

    RENE® 77 is a nickel-cobalt based superalloy designed for demanding high-temperature applications. This vacuum-melted alloy incorporates chromium (up to 15.25%) to enhance its strength and corrosion resistance at elevated temperatures. RENE® 77 exhibits good tensile strength, allowing it to withstand high stresses and maintain structural integrity under extreme conditions. Its high-temperature corrosion resistance makes it suitable for use in harsh environments, particularly in gas turbine components where it can resist oxidation and other forms of degradation. This combination of properties makes RENE® 77 a valuable choice for applications requiring a balance of strength and corrosion resistance at high temperatures.

  • Typical Uses

    Turbine engine components and aerospace parts.

  • MetalTek Grade

    RENE® 77

  • Poured At:

    Wisconsin Centrifugal Division, Wisconsin Investcast Division

Similar Specifications

Wrought Grade: RENE® 77

Typical Chemical Composition (% by wt.)

Aluminum: 4.0-4.6

Carbon: 0.05-0.09

Chromium: 14.00-15.25

Manganese: n/a

Iron: n/a

Copper: n/a

Nickel: BAL

Lead: n/a

Tin: n/a

Silicon: n/a

Zinc: n/a

Other: Co 14.25-15.75; Mo 3.9-4.5; Ti 3.0-3.7

Minimum Mechanical Properties

Tensile, ksi

0

Tensile, MPa

0

Calculated PREn (Minimum)

0

Yield, ksi

0

Yield, MPa

0

Heat Treatment: Solution Anneal And Age

Frequently Asked Questions

Vacuum cast alloys are metals melted and poured in a vacuum environment to reduce contamination from gases and ensure high purity and precision.

Used in aerospace, medical implants, nuclear components, and high-performance turbine parts requiring precise composition and minimal inclusions.

Vacuum casting reduces gas porosity, prevents contamination, and enhances alloy quality, especially for reactive or high-performance metals.

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