Alloy Grade UNS: CD3MWCuN, 6A – Duplex Stainless Steel

  • Overview

    CD3MWCuN, also known as 6A, is a high-performance duplex stainless steel engineered for exceptionally harsh environments. This alloy excels in resisting corrosion, particularly in seawater and other challenging conditions, while offering impressive strength. Its "duplex" structure combines the beneficial properties of both austenitic and ferritic stainless steels, resulting in a material with a unique balance of toughness, strength, and corrosion resistance. This combination makes CD3MWCuN a valuable choice for demanding applications where components must withstand both mechanical stress and aggressive corrosive attack.

  • Typical Uses

    Desalination, pulp & paper, marine, oil & gas, mining, and chemical processing applications.

  • MetalTek Grade

    MTEK SD100

  • Poured At:

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

Similar Specifications

Cast UNS: J93380

Wrought UNS: S32760

Wrought Grade: ZERON® 100

Cast Grade: CD3MWCuN, 6A

Cast ASTM: A890, A995

Typical Chemical Composition (% by wt.)

Aluminum: n/a

Carbon: 0.03

Chromium: 24-26

Manganese: 1

Iron: n/a

Copper: 0.50-1.00

Nickel: 6.5-8.5

Lead: n/a

Tin: n/a

Silicon: 1

Zinc: n/a

Other: Mo 3-4; W 0.50-1.00; N 0.20-0.30

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

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 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%.
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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.