Alloy Grade UNS: C96400 – 70-30 copper-nickel

  • Overview

    C96400, commonly known as 70-30 copper-nickel, is an alloy characterized by its composition of approximately 70% copper and up to 32% nickel. This combination imparts exceptional strength and corrosion resistance, especially in harsh environments. The high nickel content enhances its ability to withstand corrosion, particularly in saltwater and high-temperature conditions. C96400 is known for its excellent performance in a variety of demanding applications, where resistance to both wear and chemical degradation is crucial. Its properties make it an ideal choice for environments exposed to extreme conditions, ensuring longevity and reliability in critical components.

  • Typical Uses

    Seawater applications, valve components, and pump bodies.

  • MetalTek Designation

    MTEK 70-30

  • Poured At:

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

Similar Specifications

Cast UNS: C96400

Cast Grade: C96400

Cast ASTM: B369

Military/AMS: MIL-C-20159

Typical Chemical Composition (% by wt.)

Aluminum: n/a

Carbon: n/a

Chromium: n/a

Manganese: 1.5

Iron: 0.25-1.50

Copper: BAL

Nickel: 28-32

Lead: n/a

Tin: n/a

Silicon: 0.5

Zinc: n/a

Other: Nb 0.50-1.00; C 0.15

Minimum Mechanical Properties

Brinell 3000 KG Min

0

Tensile, ksi

0

Tensile, MPa

0

Yield, ksi

0

Yield, MPa

0

Elongation

0%

Frequently Asked Questions

Copper-nickel alloys are corrosion-resistant materials composed primarily of copper and nickel, known for durability in marine and industrial applications.

Used in marine piping, heat exchangers, desalination plants, offshore structures, and shipbuilding due to their resistance to seawater corrosion.

Copper-nickel alloys resist biofouling, stress corrosion cracking, and pitting in saltwater, making them ideal for long-term marine use.

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