Alloy Grade UNS: CF3 – Austenitic Alloy

  • Overview

    CF3 austenitic alloy is a low carbon (.03% maximum) modification of CF8 / MTEK 304. This improved alloy retains the good strength and ductility of CF8 / MTEK 304 and exhibits better general corrosion resistance. It’s generally specified where welding is to be performed without subsequent heat treatment as in large, welded assemblies or where field welding is required.

  • Typical Uses

    Pump and valve parts.

  • 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

Explore Other Alloys

Gears

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.
Stainless Steel Parts

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%.
Petrochemical Fittings

Specialty Alloys

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.