Alloy Grade UNS: CG8M – Corrosion Resistant Alloy

  • Overview

    CG8M is a versatile "300 series" stainless steel alloy renowned for its exceptional toughness and general corrosion resistance. This austenitic stainless steel boasts a composition of up to 21% chromium and 13% nickel, contributing to its enhanced resistance against a wide range of corrosive environments. CG8M offers a good balance of strength, wear resistance, and galling resistance, making it suitable for applications involving moderate mechanical stress and friction. Its exceptional toughness allows it to absorb significant impact energy without fracturing, making it a reliable choice for applications where resistance to shock and vibration is important. This combination of corrosion resistance, strength, and toughness makes CG8M a valuable choice for diverse applications requiring a balance of performance and durability.

  • 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 317

  • Poured At:

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

Similar Specifications

Cast UNS: J93000

Wrought UNS: S31700

Wrought Grade: 317

Cast Grade: CG8M

Cast ASTM: A351, A743, A744

Typical Chemical Composition (% by wt.)

Aluminum: n/a

Carbon: 0.08

Chromium: 18-21

Manganese: 1.5

Iron: n/a

Copper: n/a

Nickel: 9.0-13.0

Lead: n/a

Tin: n/a

Silicon: 1.5

Zinc: n/a

Other: Mo 3-4

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 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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