Alloy Grade UNS: CN7MS – Super Austenitic Alloy 

  • Overview

    CN7MS, also known as Alloy 20 or J94650, is a super austenitic stainless steel that builds upon the excellent corrosion resistance of CN7M. This modified alloy offers even greater resistance to sulfuric acid and other aggressive chemicals, making it a preferred choice for demanding applications in chemical processing, pharmaceuticals, and food processing. CN7MS retains the beneficial non-magnetic properties of CN7M while providing enhanced mechanical properties, including high strength and ductility. This combination of superior corrosion resistance, good mechanical properties, and non-magnetic characteristics makes CN7MS a valuable choice for industries where material performance and resistance to harsh chemicals are critical.

  • Typical Uses

    Food and beverage equipment, waste treatment and handling, and pharmaceutical applications.

  • MetalTek Grade

    MTEK 20M

  • Poured At:

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

Similar Specifications

Cast UNS: J94650

Cast Grade: CN7MS

Cast ASTM: A744

Typical Chemical Composition (% by wt.)

Aluminum: n/a

Carbon: 0.07

Chromium: 18-20

Manganese: 1

Iron: n/a

Copper: 1.5-2.0

Nickel: 22-25

Lead: n/a

Tin: n/a

Silicon: 2.5-3.5

Zinc: n/a

Other: Mo 2.5-3.0

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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