Alloy Grade UNS: HF – Chromium, Nickel and Carbon

  • Overview

    The MTEK 20-10 alloy is also referred to as cast grade HF. A careful balance of the chromium, nickel, and carbon content insures a completely austenitic structure in this alloy, making it suitable for applications requiring high strength and corrosion resistance in the 1200 to 1600 degrees Fahrenheit range. Because the structure is stable austenite, this alloy is not subject to embrittlement due to formation of sigma phase in service, even after long exposure to 1400 to 1500 degrees Fahrenheit temperatures.

  • Typical Uses

    Annealing boxes, annealing furnace components, burner tips, burnishing rolls, convection furnace components, and gas burner rings.

  • MetalTek Grade

    MTEK 20-10

Similar Specifications

Cast UNS: J92603

Wrought Grade: 302

Cast Grade: HF

Cast ASTM: A297, A608

Typical Chemical Composition (% by wt.)

Aluminum: n/a

Carbon: 0.20-0.40

Chromium: 18-23

Manganese: 2

Iron: n/a

Copper: n/a

Nickel: 8.0-12.0

Lead: n/a

Tin: n/a

Silicon: 2

Zinc: n/a

Minimum Mechanical Properties

Tensile, ksi

0

Tensile, MPa

0

Yield, ksi

0

Yield, MPa

0

Elongation

0%

Heat Treatment: Not Heat Treated

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Non-Ferrous

Non-ferrous alloys are, literally, materials that are not iron-based. While others may provide non-ferrous materials of other materials, the MetalTek family of non-ferrous alloys are copper-based. In general, these materials deliver high strength, and excellent wear and corrosion resistance. They are often found in marine applications and also bushing, bearing, and gear environments.
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Stainless Steel

Stainless steels owe their ability to resist corrosion primarily to the presence of a passive film on their surface. Chromium is chiefly responsible for formation of the passive film. Iron ceases to rust at approximately 12% chromium content and resistance to oxidizing corrosives increases rapidly with chromium content up to approximately 20%.
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Specialty Alloys comprise a broad group of materials that deliver properties for more demanding applications, use more exotic or expensive materials, or require special processes to manufacture. Where standard materials may not offer desired performance, specialty alloys (including those that are modified further) may be a sensible selection.