Alloy Grade UNS: CF8M Stainless Steel  Alloy

  • Overview

    CF8M, often referred to as 316 stainless steels in its cast form, is an austenitic stainless steel enhanced with 2.0% to 3.0% molybdenum for superior corrosion resistance. This addition significantly improves its resistance to pitting and crevice corrosion, particularly in chloride-rich environments like seawater. With a maximum carbon content of 0.08%, CF8M maintains excellent strength and ductility, making it suitable for applications requiring both toughness and formability. While readily machinable and weldable, it's crucial to re-anneal CF8M after welding to restore optimal corrosion resistance. This alloy is prized for its balanced combination of strength, corrosion resistance, and ease of fabrication, making it a versatile choice for demanding applications.

  • Typical Uses

    Bearings, chemical and food processing, household appliances, furnace fixtures, environmental protection industry (garbage and sewage devices), heat exchangers, piping, pressure vessels, pulp/paper components, pump and valve components, nuclear flow control, sink rolls, and marine components.

  • MetalTek Grade

    MTEK 316

Similar Specifications

Cast UNS: J92900

Wrought UNS: S31600

Wrought Grade: 316

Cast Grade: CF8M

Cast ASTM: A351, A743, A744

Military/AMS: AMS 5361

* 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: 1.5

Zinc: n/a

Other: Mo 2-3

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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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 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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