Alloy Grade UNS: ALLOY 120 – Alloys for Extreme Heat

  • Overview

    Alloy 120 is an alloy for extreme heat and corrosion services, that also offers great strength. The strength at temperatures can go up to 2000 degrees Fahrenheit. It is a nickel alloy that contains up to 45% nickel. Alloy 120 also contains carbon, chromium, manganese, and silicon.

  • Typical Uses

    Chemical and food processing equipment, heat treat equipment and calciner components, turbine engine parts.

  • MetalTek Grade

    ALLOY 120

Similar Specifications

Wrought UNS: N08120

Typical Chemical Composition (% by wt.)

Aluminum: n/a

Carbon: 0.2

Chromium: 12.0-32.0

Manganese: 2

Iron: n/a

Copper: n/a

Nickel: 30-45

Lead: n/a

Tin: n/a

Silicon: 3

Zinc: n/a

Other: Mo 5.0 MAX; Co 5.0 MAX; Nb 4.0 MAX; Ta; Al; Ti

Minimum Mechanical Properties

Tensile, ksi


Tensile, MPa


Yield, ksi


Yield, MPa




Heat Treatment: Solution Anneal