Alloy Grade UNS: HL-AL – Corrosion Resistance to Hot Gases

  • Overview

    HL-AL is a high-temperature alloy that builds upon the strength of HK by offering improved corrosion resistance, especially in the presence of hot gases. The addition of chromium, along with nickel, silicon, manganese, and aluminum, enhances its ability to withstand corrosive attack at elevated temperatures. This makes HL-AL suitable for demanding applications where components encounter hot gases containing sulfur, carbon, or other corrosive elements. With a service limit of 1875 degrees Fahrenheit (1025 degrees Celsius), HL-AL provides reliable performance in challenging environments. This combination of strength, high-temperature resistance, and enhanced corrosion resistance makes it a valuable choice for specialized applications in industries where these properties are critical.

  • Typical Uses

    Calcining tubes, pier caps with temperature fixtures and hardware.

  • MetalTek Grade

    HL-AL

  • Poured At:

    Carondelet Division, Sandusky International Division, Wisconsin Investcast Division

Similar Specifications

Typical Chemical Composition (% by wt.)

Aluminum: 0.30-0.70

Carbon: 0.38-0.50

Chromium: 30-32

Manganese: 1.5 MAX

Iron: BAL

Copper: n/a

Nickel: 20-22

Lead: n/a

Tin: n/a

Silicon: 2 MAX

Zinc: n/a

Other: Nb 0.5

Minimum Mechanical Properties

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