Alloy Grade UNS: HS188 – Oxidation Resistance

  • Overview

    HS188 is a nickel-based alloy specifically engineered for high-temperature applications where oxidation resistance and strength are paramount. This alloy maintains its mechanical properties and resists degradation even under prolonged exposure to elevated temperatures. Its high nickel content contributes to its excellent oxidation resistance, preventing the formation of oxides that can compromise its structural integrity. Furthermore, HS188 exhibits good ductility, even at temperatures up to 1600 degrees Fahrenheit (870 degrees Celsius), allowing it to withstand thermal stresses and resist cracking. This combination of oxidation resistance, high-temperature strength, and ductility makes HS188 a valuable choice for demanding applications in industries where components must operate reliably under extreme heat.

  • Typical Uses

    Turbine engine components.

  • MetalTek Grade

    HS188

  • Poured At:

    Wisconsin Centrifugal Division, Wisconsin Investcast Division

Similar Specifications

Wrought UNS: R30188

Military/AMS: AMS 5772

Typical Chemical Composition (% by wt.)

Aluminum: n/a

Carbon: 0.05-0.15

Chromium: 20-24

Manganese: 1.25

Iron: 3.0 MAX

Copper: n/a

Nickel: 20-24

Lead: n/a

Tin: n/a

Silicon: 0.20-0.50

Zinc: n/a

Other: Co BAL; W 13-16; La; B

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

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