Alloy Grade UNS: CF3M –  Low Carbon

  • Overview

    CF3M is a low-carbon stainless steel alloy specifically engineered for applications demanding both high strength and exceptional corrosion resistance. As a low-carbon (.03% maximum) modification of traditional 316 stainless steel, it includes molybdenum to enhance its properties. This molybdenum addition not only improves its corrosion resistance, particularly in chloride-rich environments, but also boosts its strength and high-temperature performance. CF3M is often specified for large, welded assemblies where field welding prevents subsequent heat treatment, as its low carbon content minimizes the risk of sensitization and intergranular corrosion. This makes it a valuable choice for applications requiring robust, corrosion-resistant welds in challenging environments.

  • Typical Uses

    Bearings, chemical and food processing, furnace fixtures, heat exchangers, piping, pressure vessels, pulp/paper components, pump and valve components, nuclear flow control, sink rolls.

  • MetalTek Grade

    MTEK 316L

  • Poured At:

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

Similar Specifications

Cast UNS: J92800

Wrought UNS: S31603

Wrought Grade: 316L

Cast Grade: CF3M

Cast ASTM: A351, A743, A744

Typical Chemical Composition (% by wt.)

Aluminum: n/a

Carbon: 0.03

Chromium: 17-21

Manganese: 1.5

Iron: n/a

Copper: n/a

Nickel: 9.0-13.0

Lead: n/a

Tin: n/a

Silicon: 1.5

Zinc: n/a

Other: Mo 2-3

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

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.