ThePipingMart Blog Grades UNS C66700 Manganese Brass – Composition, Properties, and Uses

UNS C66700 Manganese Brass – Composition, Properties, and Uses

UNS C66700

UNS C66700 is a copper-nickel-zinc alloy popular for its excellent corrosion resistance and high-strength properties. It is commonly used in various industries, including marine, chemical, and petrochemical industries, where its unique properties make it ideal for multiple applications. If you want to know more about UNS C66700, this blog is for you. This post will explore the composition, mechanical and physical properties, uses, corrosion resistance, heat treatment, machining, and welding of UNS C66700.

UNS C66700 Composition

UNS C66700 is a copper-nickel-zinc alloy, also known as alloy C667. The composition of UNS C66700 is 71-73% Copper, 9-11% Nickel, 9-11% Zinc, and 1-2% Iron, Manganese, and Lead. The alloy’s chemical composition is vital in its mechanical and physical properties, making it ideal for specific applications.

Element Content (%)
Cu, Copper 70
Zn, Zinc 28.8
Mn, Manganese 1.2

UNS C66700 Mechanical and Physical Properties

UNS C66700 possesses excellent mechanical and physical properties. It has a tensile strength of 630 MPa, yield strength of 310 MPa, and an elongation of 10%. The alloy’s physical properties include a density of 8.79 g/cm3, thermal conductivity of 16 W/m•K, thermal expansion of 17.7×10-6 m/m•K, and a melting point of 1050°C.

Properties Metric Imperial
Tensile strength 315-689 MPa 45700-99900 psi
Yield strength (depending on temper) 83-683 MPa 12000-99100 psi
Elongation at break ( in 50.8 mm) 60% 60%
Machinability (UNS C36000 (free-cutting brass) = 100) 30 30

UNS C66700 Uses

UNS C66700 is widely used in various industries, including marine, chemical, and petrochemical industries. Its unique properties make it ideal for multiple applications, including heat exchangers, condensers, corrosion-resistant fasteners, and valves.

UNS C66700 Corrosion Resistance

UNS C66700 has excellent corrosion resistance to seawater, brine, and other corrosive media. This makes it an ideal alloy for marine and offshore applications. The alloy’s corrosion resistance properties are due to the protective oxide film that forms on its surface when in contact with corrosive media.

UNS C66700 Heat Treatment

UNS C66700 is a heat-treatable alloy. It can be annealed at 540°C for two hours for stress relief. The alloy can also be hardened by hard work.

UNS C66700 Machining

UNS C66700 can be machined using standard machining techniques. However, it is crucial to use a sharp tool to prevent work hardening. The alloy’s machinability is good, and it can be easily cut, drilled, and fabricated using standard machining techniques.

UNS C66700 Welding

UNS C66700 can be welded using various welding techniques, including TIG, MIG, and resistance welding. Welding produces a robust and durable bond that maintains the alloy’s corrosion resistance properties.

Conclusion:

UNS C66700 is a versatile copper-nickel-zinc alloy with excellent corrosion resistance, high-strength properties, and good machinability. Its unique properties make it an ideal alloy for various industrial applications, including marine, chemical, and petrochemical industries. This blog post has given you a better understanding of UNS C66700 and its mechanical and physical properties, uses, corrosion resistance, heat treatment, machining, and welding. Please contact us if you have any further questions or want to learn more.

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