Alloy Grade UNS: CF3 – Austenitic Alloy

  • Overview

    CF3 is a versatile cast austenitic stainless-steel alloy renowned for its excellent weldability and corrosion resistance. As an ultra-low carbon modification of CF8/MTEK 304, it retains the good strength and ductility of its counterpart while exhibiting even better general corrosion resistance. This makes CF3 particularly well-suited for applications involving extensive welding, especially large assemblies or situations where post-weld heat treatment is impractical. Its low carbon content minimizes carbide precipitation during welding, preventing sensitization and reducing the risk of intergranular corrosion. In addition to its excellent weldability, CF3 also offers good castability and machinability, making it a versatile choice for a wide range of applications.

  • Typical Uses

    Pump and valve parts, chemical processing equipment, marine and nuclear applications, and food processing parts. Pressuring containing parts is a common use case.

  • MetalTek Grade

    MTEK 304L

Similar Specifications

Cast UNS: J92500

Wrought UNS: S30403

Wrought Grade: 304L

Cast Grade: CF3

Cast ASTM: A351, A743, A744

Military/AMS: AMS 5371

* AMS specifying sand casting.

Typical Chemical Composition (% by wt.)

Aluminum: n/a

Carbon: 0.03

Chromium: 17-21

Manganese: 1.5

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: Solution Anneal

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