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UNS C46400 Copper Alloy Chemical Composition, Grades, Chart and Document

Uns C46400 is a very resistant copper alloy which properties are providing it with an excellent corrosion resistance, suitable for marine environments and industrial applications. As a copper-based alloy containing 60% copper, 39.2% zinc and 0.8% tin, it shows superior mechanical features along with excellent machinability and soldering facility. This copper based alloy which is referred as Naval Brass is widely employed for items such as marine hardware, fasteners, valves and pump components. Its grades must be made by an operation that adheres to the strict standards of the ASTM, producing consistent quality and credibility. The chemical composition chart outlines its elemental composition, while accompanying documents explain mechanical properties, usage, and more of the material. The combination of its strong enough nature and corrosion resistance ability perfectly suitable for use in the places where the most demanding machines are built.

UNS C46400 Copper Alloy Chemical Composition And Grade Table

UNS C46400 belongs to the family of naval brasses and is a material made of copper (60-63%) and zinc (38-41%) with a minor amount of tin (0.5-1.0%). This compound has excellent resistant nature towards corrosion in the marine environment, therefore, it is suitable for use in, among other things, marine hardware, valves, pumps, and fittings. It provides high tensile strength and good machinability that make its use even more suitable. C46400 complies with both ASTM B21/B21M and ASTM B124/B124M standards, which guarantee the regularity and the production performance. Balanced in chemical composition and being reliable, it is opted for in a great number of sea and industrial uses.

UNS C46400 Copper Alloy Composition Table
Elements Cu Pb Zn Sn Fe
Min (%) 59.0 - 0.50 - -
Max (%) 62.0 0.20 1.0 Rem 0.10

The Advantages and Disadvantages of UNS C46400 Copper Material Properties, C46400 Properties

    Advantages:

  • Excellent corrosion resistance: UNS C46400 copper alloy, also called naval brass, has the best corrosion resistance in seawater and other harsh environments, which is why it is used for marine applications such as shipbuilding and offshore structures.

  • High strength: It has high tensile and yield strength, which in turn gives it the durability and reliability in structural applications where strength is required.

  • Good machinability: The UNS C46400 is easy to machine, which means that production processes can be efficient and the manufacturing of complex components can be cost-effective.

  • Biostatic properties: Copper alloys such as UNS C46400 have in themselves antimicrobial properties, which are the reasons why they are the best materials for medical and food processing equipment.

  • Thermal conductivity: The alloy has good thermal conductivity, thus, it is perfect for heat exchangers, condensers, and other applications that require efficient heat transfer.

    Disadvantages:

  • Cost: UNS C46400 copper alloy can be more pricey than other copper alloys or other materials, which may affect its affordability for some applications.

  • Lead content: Some of the UNS C46400 variations may contain lead to enhance machinability, which is a health and environmental issue, especially in the applications that involve potable water or food contact.

  • Potential for dezincification: Similarly to other brass alloys, UNS C46400 is prone to dezincification in some environments, which in turn can affect its mechanical properties and structural integrity.

  • Surface tarnishing: Although it has good corrosion resistance, UNS C46400 may tarnish in outdoor environments with pollutants, especially requiring periodic maintenance to keep its appearance.

  • Limited availability: The UNS C46400 may not be available in some regions or from some suppliers, which can result in longer lead times or higher procurement costs.

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Frequently Asked Questions

FAQs
What is the chemical structure of UNS C46400 copper alloy?

The chemical composition of UNS C46400 (also called naval brass) usually contains around 59% copper (Cu) and 39%. 2% zinc, 1% tin, and a few other elements like iron, lead, and nickel which are present in small amounts.

What are the grades or standards connected to the UNS C46400 copper alloy?

UNS C46400 is a part of numerous grades and standards such as ASTM B21 (Standard Specification for Naval Brass Rod, Bar, and Shapes), ASTM B124 (Standard Specification for Copper and Copper Alloy Forging Rod, Bar, and Shapes), and MIL-C-24679 (Military Specification for Co)

What is the source of a chart that describes the mechanical properties of UNS C46400 copper alloy?

The charts which show the mechanical properties of UNS C46400 can be found in materials standards such as ASTM B21 and ASTM B124. The charts usually have data on the tensile strength, yield strength, elongation, hardness, and other mechanical properties.

What are the typical uses of UNS C46400 copper alloy?

UNS C46400 is mostly used in marine and industrial applications that need high corrosion resistance, like shipbuilding, marine hardware, valves, fittings, and pump components. Its super resistance to seawater corrosion makes it especially suitable for marine environments.

Raw Material Prices (Updated as on: 20 May 2024 02:29 AM) LIVE RATES

MetalsPrice/TonnePrice/KG
Nickel$20,953₹1,745.35
LME$21,004₹1,749.63
Copper$11,127₹926.91
LME$10,481₹873.08
Aluminum$2,611₹217.47
LME$2,598₹216.39
Zinc$3,032₹252.55
LME$2,974₹247.73
Lead$2,292₹190.95
LME$2,286₹190.42

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