Alloy Grade UNS: CD4MCuN, 1B – Seawater Corrosion Resistance

  • Overview

    CD4MCuN, also known as 1B, is a high-performance duplex stainless steel specifically formulated for demanding applications where both strength and corrosion resistance are paramount. This alloy boasts nearly twice the strength of common stainless steels, making it suitable for challenging environments where structural integrity is critical. Its duplex microstructure, a combination of austenite and ferrite phases, contributes to its enhanced mechanical properties and corrosion resistance. With a chromium content of up to 26.5%, CD4MCuN exhibits exceptional resistance to various forms of corrosion, particularly in seawater and other harsh environments. This combination of high strength and superior corrosion resistance makes CD4MCuN a valuable choice for applications where components must withstand both mechanical stress and aggressive corrosive attack.

  • Typical Uses

    Centrifuge and dewatering equipment, couplings, heat exchangers, offshore piping systems, paper rolls, pulp digesters, pump and valve components, pressure vessels.

  • MetalTek Grade

    MTEK 29MN

  • Poured At:

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

Similar Specifications

Cast UNS: J93372

Cast Grade: CD4MCuN, 1B

Cast ASTM: A890, A995

Typical Chemical Composition (% by wt.)

Aluminum: n/a

Carbon: 0.04

Chromium: 24.5-26.5

Manganese: 1

Iron: n/a

Copper: 2.7-3.3

Nickel: 4.7-6.0

Lead: n/a

Tin: n/a

Silicon: 1

Zinc: n/a

Other: Mo 1.70-2.30; N 0.10-0.25

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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