Alloy Grade UNS: HK – Cast Grade HK

  • Overview

    HK is an austenitic heat-resistant alloy composed primarily of iron, chromium, and nickel, specifically formulated for high-temperature applications. This alloy exhibits excellent strength at elevated temperatures, making it suitable for demanding environments where components are exposed to extreme heat. Furthermore, HK offers good resistance to carburization and oxidation, preventing degradation and ensuring long-term performance in high-temperature processes. Its ability to withstand heat and resist carburization makes it a valuable choice for applications in reformer furnaces, pyrolysis units, and other high-temperature furnace applications where components must operate reliably under extreme conditions.

  • Typical Uses

    Calcining tubes, cement kiln parts, pier caps with temperature fixtures and hardware, radiant tubes, and retorts.

  • MetalTek Grade

    MTEK 25-20

  • Poured At:

    Carondelet Division, Sandusky International Division, Wisconsin Centrifugal Division, Wisconsin Investcast Division

Similar Specifications

Cast UNS: J94224

Wrought UNS: S31000

Wrought Grade: 310

Cast Grade: HK

Cast ASTM: A297, A608

Typical Chemical Composition (% by wt.)

Aluminum: n/a

Carbon: 0.20-0.60

Chromium: 24-28

Manganese: 2

Iron: n/a

Copper: n/a

Nickel: 18-22

Lead: n/a

Tin: n/a

Silicon: 2

Zinc: n/a

Minimum Mechanical Properties

Tensile, ksi

0

Tensile, MPa

0

Calculated PREn (Minimum)

0

Yield, ksi

0

Yield, MPa

0

Elongation

0%

Heat Treatment: Not Heat Treated

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