Alloy Grade UNS: HP-LC – Increased Ductility

  • Overview

    HP-LC, also known as MTEK 25-35LC, is a low-carbon modification of the HP alloy specifically engineered to provide enhanced ductility at high temperatures. This cast alloy retains the excellent oxidation and high-temperature resistance of HP while offering improved flexibility and resistance to cracking under stress. Its lower carbon content reduces the formation of carbides, which can contribute to embrittlement, resulting in a more ductile material. With a service limit of 1925 degrees Fahrenheit (1050 degrees Celsius), HP-LC maintains its mechanical properties and resists degradation even under prolonged exposure to heat. This combination of strength, ductility, and high-temperature resistance makes HP-LC a valuable choice for demanding applications where components must withstand both mechanical stress and elevated temperatures.

  • Typical Uses

    Petrochemical furnaces, especially suited to pyrolysis furnace sweep bends and reformer furnace outlet manifolds.

  • MetalTek Grade

    MTEK 25-35LC

  • Poured At:

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

Similar Specifications

Typical Chemical Composition (% by wt.)

Aluminum: n/a

Carbon: 0.12-0.18

Chromium: 23.5-26.0

Manganese: 1.00-1.60

Iron: BAL

Copper: n/a

Nickel: 35-38

Lead: n/a

Tin: n/a

Silicon: 1.00-1.75

Zinc: n/a

Other: Mo 0.50 MAX; Nb 0.75-1.50

Minimum Mechanical Properties

Tensile, ksi

0

Tensile, MPa

0

Calculated PREn (Minimum)

0

Yield, ksi

0

Yield, MPa

0

Elongation

0%

Heat Treatment: Normally Used As Cast

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