Alloy Grade UNS: CF8C – Austenitic Stainless Steel

  • Overview

    CF8C is an austenitic stainless-steel alloy favored for applications requiring extensive welding without the need for subsequent heat treatment. This alloy is particularly well-suited for service at elevated temperatures, typically in the 900° to 1200° F range, where it maintains its strength and corrosion resistance. CF8C exhibits good machining and welding characteristics, making it versatile for fabrication. While slightly magnetic, it offers excellent wear and galling resistance, ensuring durability in applications involving friction and sliding contact. Furthermore, CF8C possesses good toughness, allowing it to withstand impact and resist cracking under stress. This combination of properties makes CF8C a valuable choice for demanding applications where weldability, high-temperature performance, and wear resistance are essential.

  • Typical Uses

    Bearings, pump and valve components, chemical and food processing equipment, heat exchangers, pulp/paper applications, aircraft shroud assemblies, turbine engine parts, and marine fittings.

  • MetalTek Grade

    MTEK 347

  • Poured At:

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

Similar Specifications

Cast UNS: J92710

Wrought UNS: S34700

Wrought Grade: 347

Cast Grade: CF8C

Cast ASTM: A351, A743, A744

Military/AMS: AMS 5363

* AMS specifying sand casting., AMS specifying centrifugal casting.

Typical Chemical Composition (% by wt.)

Aluminum: n/a

Carbon: 0.08

Chromium: 18-21

Manganese: 1.5

Iron: n/a

Copper: n/a

Nickel: 9.0-12.0

Lead: n/a

Tin: n/a

Silicon: 2

Zinc: n/a

Other: Nb 1 MAX

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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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.