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UNS C38500 Copper Alloy Chemical Properties, Grade, Chart and Document

The UNS C38500 is the copper bronze alloy, which possesses excellent resistance to corrosion and is widely utilized for a huge range of applications. This alloy is usually formed from copper which takes more than 50% of the alloy content with zinc and lead being the other major alloying constituents. Grade C38500 which is machinable at a great degree is best for complicated pieces of the works of plumbing, electrical, and marine engineering. Its chemical composition will protect it from dezincification together with stress corrosion cracking which guarantees extended service in severe or hostile situations. A comprehensive chart containing the chemical characteristics of the material allows for the exact specification of the material for particular applications. Moreover, specifications of the material separately mention the mechanical properties, fabrication guidelines, and compliance standards which help in safe and sound utilization for different industries.

UNS C38500 Copper Alloy Chemical Composition And Grade Table

UNS C38500, also recognized by the name C385 Brass is an alloy brass which has good machinability and corrosion resistance. It consists mainly of copper (Cu) with some extra zinc (Zn), lead (Pb) and fine amounts of other elements. Its composition has been tuned to achieve better mechanical properties. It is the primary alloy for the electrical, piping and marine applications due to its preferred combination of strength, ductility and conductivity. Its chemical composition is regulated to meet stringent requirements, allowing it to have consistent quality and performance regardless of the grades or applications.

UNS C38500 Copper Alloy Composition Table
Elements Cu Pb Zn Fe
Min (%) 55.5 2.5 - -
Max (%) 59.0 3.5 Rem 0.35

The Advantages and Disadvantages of UNS C38500 Copper Material Properties, C38500 Properties

    Advantages:

  • High machinability: UNS C38500 copper alloy or architectural bronze, which has a great machinability, thus, it is simple to use in the manufacturing processes.

  • Good corrosion resistance: It has a good corrosion resistance which makes it suitable for outdoor and marine applications where the exposure to harsh environments is common.

  • Attractive appearance: UNS C38500 has a decent golden color and a smooth finish, thus it is aesthetically attractive for architectural applications like decorative elements, sculptures, and ornamental fixtures.

  • High ductility and malleability: The alloy possesses a high degree of ductility and malleability that facilitates the shaping, bending, and forming of various intricate designs.

  • Excellent thermal conductivity: UNS C38500 copper alloy has very good thermal conductivity, which makes it perfect for heat exchangers, radiator components, and other thermal management applications.

    Disadvantages:

  • Cost: Compared to other copper alloys, UNS C38500 is relatively expensive due to its specific composition and properties, which may influence its affordability for some applications.

  • Low tensile strength: It has less tensile strength than some other copper alloys, thus, it is not suitable for high-stress applications where strength is a vital element.

  • Susceptibility to dezincification: Similar to other brass alloys, UNS C38500 is prone to dezincification in certain environments, especially those with high chloride content, which results in the loss of mechanical strength and structural integrity.

  • Limited cold workability: The alloy may have limited cold workability, thus, it is not suitable for applications that need extensive cold forming or bending operations.

  • Potential for tarnishing: Although UNS C38500 has good corrosion resistance, it can tarnish over time, especially in outdoor environments with exposure to pollutants, thus maintenance is required to keep its appearance.

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Frequently Asked Questions

FAQs
What is the chemical composition of the UNS C38500 copper alloy?

The chemical composition of UNS C38500 usually consists of about 57-61% of copper (Cu), 0. 5-1. 5% lead (Pb), 0. The two main elements in the alloy are iron (2%) and the rest of the alloy is zinc (Zn). Sometimes, other elements like tin (Sn) can also be found in small amounts.

What are the main characteristics of UNS C38500 copper alloy?

UNS C38500, also known as architectural bronze, has the excellent machinability, good corrosion resistance, moderate strength and good formability. It is usually employed for decoration and architectural purposes because of its visual beauty.

What are the common applications of UNS C38500 copper alloy?

The commonly used applications are the architectural hardware, decorative elements, plumbing fittings, valve stems and various components that need good machinability and corrosion resistance.

Which standards are used for the development and use of UNS C38500 copper alloy?

The UNS C38500 specifications and use are controlled by the standards such as ASTM B455 (for brass wire), ASTM B927 (for brass rod and bar), and so on. These standards are the guarantee of the uniform quality and properties for the industrial and architectural applications.

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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