Alloy Grade UNS: CD4MCu,1A – Metal Alloy

  • Overview

    CD4MCu, also known as MTEK 29M, is a duplex stainless steel that offers a compelling combination of high strength and exceptional corrosion resistance. This alloy boasts nearly twice the strength of many common stainless-steel grades, making it suitable for demanding applications where structural integrity is crucial. Furthermore, CD4MCu exhibits outstanding corrosion resistance, particularly in harsh environments like those containing sulfuric acid or seawater. It can be age-hardened to further increase its hardness and wear resistance, making it suitable for applications involving friction and abrasion. CD4MCu also offers good machinability and weldability, adding to its versatility in manufacturing processes.

  • Typical Uses

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

  • MetalTek Grade

    MTEK 29M

  • Poured At:

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

Similar Specifications

Cast UNS: J93370

Cast Grade: CD4MCu,1A

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: 2.75-3.25

Nickel: 4.75-6.00

Lead: n/a

Tin: n/a

Silicon: 1

Zinc: n/a

Other: Mo 1.75-2.25

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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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.