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400

Nickel Alloy 400 (UNS N04400) is a solid-solution nickel-copper alloy with high strength and excellent resistance to corrosion in various environments.

Nickel Alloy 400 (UNS N04400) is a solid-solution nickel-copper alloy with high strength and excellent resistance to corrosion in various environments. It is a single-phase alloy that contains 66% nickel and 30% copper, with small amounts of iron, manganese, and carbon. This combination of elements provides Alloy 400 with a high level of resistance to stress corrosion cracking, chloride ion pitting, and other forms of corrosion in a wide range of environments.

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Nickel Alloy 400 has good mechanical properties and is readily formed, welded, and fabricated. It has good thermal and electrical conductivity, and has a low coefficient of thermal expansion. This makes it an ideal material for use in high temperature, high-pressure, and corrosive environments.

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Alloy 400 has a low annealed yield strength and relatively low work hardening rate, which makes it relatively easy to work with. It can be hot worked between 927-1093°C (1700-2000°F) and can be cold worked to increase its strength. It is typically used in the chemical processing, marine, oil and gas, and power generation industries, where its high resistance to corrosion is required.

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In summary, Nickel Alloy 400 is a versatile, high-strength, corrosion-resistant material that is well suited for use in demanding environments where high strength, corrosion resistance, and thermal stability are required.

Chemical Composition of 400

The chemical composition of Nickel Alloy 400 (UNS N04400) is as follows:

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  • Nickel (Ni): 66.0 - 70.0%

  • Copper (Cu): 29.0 - 33.0%

  • Iron (Fe): ≤ 1.5%

  • Manganese (Mn): ≤ 2.0%

  • Carbon (C): ≤ 0.15%

  • Silicon (Si): ≤ 0.5%

  • Sulfur (S): ≤ 0.015%

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Note: The exact chemical composition may vary depending on the manufacturer and specific product grade. The above values are typical ranges and should not be used as a basis for design. Consult the manufacturer's data sheet for more information.

The physical and mechanical properties of Nickel Alloy 400 (UNS N04400) are as follows:

Physical Properties:

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  • Density: 8.9 g/cm³

  • Melting Point: 1350-1400°C (2460-2550°F)

  • Thermal Conductivity: 26.0 W/mK

  • Electrical Conductivity: 60.0% IACS

  • Coefficient of Thermal Expansion: 12.3 µm/m°C (20-100°C)

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Mechanical Properties:

  • Ultimate Tensile Strength: 550 MPa (80 ksi)

  • Yield Strength: 240 MPa (35 ksi)

  • Elongation: 40%

  • Hardness (Brinell): 189-237 HB

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Note: The mechanical properties of Alloy 400 can be influenced by temperature, rate of loading, and other factors. The above values are typical ranges and should not be used as a basis for design. Consult the manufacturer's data sheet for more information.

Physical & Mechanical Properties of 400

Variants of Nickel Alloys

There are many variants of nickel alloys, each with unique chemical compositions, properties, and applications. Some of the most common nickel alloys include:

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  • Nickel 200 (UNS N02200): A pure nickel alloy with good corrosion resistance and high thermal and electrical conductivity.

  • Nickel 201 (UNS N02201): A low-carbon nickel alloy with high thermal and electrical conductivity and excellent corrosion resistance.

  • Inconel 600 (UNS N06600): A nickel-chromium alloy with excellent resistance to high-temperature corrosion and oxidation.

  • Inconel 601 (UNS N06601): A nickel-chromium-iron alloy with good resistance to high-temperature oxidation and corrosion.

  • Inconel 625 (UNS N06625): A nickel-chromium-molybdenum alloy with excellent resistance to corrosion and high-temperature oxidation.

  • Monel 400 (UNS N04400): A nickel-copper alloy with good corrosion resistance in a variety of environments.

  • Hastelloy C-276 (UNS N10276): A nickel-molybdenum-chromium alloy with excellent resistance to corrosion in a variety of harsh environments.

  • Incoloy 800 (UNS N08800): A nickel-iron-chromium alloy with good resistance to high-temperature corrosion and stress corrosion cracking.

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These are just a few examples of the many nickel alloys available. The specific alloy chosen for a particular application depends on the desired properties and the conditions of use. It's always best to consult a materials engineer or specialist for the most appropriate selection.

AVAILABLE FORMS

Intamet offers Alloy 400 in a wide range of forms, including the below:

Stacked Pipes

Tubes & Pipes

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Fittings & Flanges

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Round Bars

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Sheet & Plate

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