ThePipingMart Blog Grades Commercial Bronze UNS C22000 – Composition, Properties, and Uses

Commercial Bronze UNS C22000 – Composition, Properties, and Uses

Bronze (UNS C22000)

This blog post will closely examine the composition, mechanical and physical properties, and various uses of Bronze UNS C22000.

What is Bronze UNS C22000?

Bronze UNS C22000, also known as red brass, is a type of bronze with high copper content and low zinc content. It is a popular material in the manufacturing industry due to its durability and excellent resistance to wear and tear.

UNS C22000 Composition

Bronze UNS C22000 is composed of 88% to 90% copper and 8% to 10% zinc. It also contains 0.05% of lead, which aids in its machinability. The presence of copper gives the material its characteristic reddish-brown colour and excellent electrical conductivity. On the other hand, the zinc content enhances the material’s strength and corrosion resistance.

Element Content (%)
Cu 90
Zn 10

UNS C22000 Mechanical Properties

Bronze UNS C22000 has impressive mechanical properties, which make it an ideal choice for various manufacturing applications. It has a tensile strength of 47,000 psi and yield strength of 20,000 psi. Additionally, it has an elongation of 40%, which means it can withstand deformation without breaking. The hardness of C22000 ranges from 70 to 90 Brinell, which makes it an excellent material for parts that undergo constant wear and tear.

Properties Metric Imperial
Poisson’s ratio 0.34 0.34
Elastic modulus 117 GPa 17000 ksi

UNS C22000 Physical Properties

Apart from the material’s mechanical properties, it also has excellent physical properties that make it versatile. Bronze UNS C22000 has a density of 8.44 g/cm3, a melting point of 1000°C, and a thermal conductivity of 119 W/mK. Its linear expansion coefficient is 17.6 μm/m °C, making it suitable for applications with good thermal stability.

Properties Metric Imperial
Density 8.8-8.94 g/cc 0.317-0.322 lb/in3
Melting point 1021°C 1870°F

UNS C22000 Equivalents

ASTM B130 ASTM B135 ASTM B587 MIL B-20292 MIL W-85
ASTM B131 ASTM B36 ASTM B694 MIL C-3383 QQ W321
ASTM B134 ASTM B372 MIL B-18907 MIL W-6712 SAE J461
SAE J463

UNS C22000 Uses

Bronze UNS C22000 has a wide range of applications across different industries. Its excellent mechanical and physical properties make it an incredibly versatile material. You can find it in plumbing fixtures, decorative hardware, marine hardware, pump impellers, and gears. It is also used to manufacture musical instruments such as horns and saxophones.

UNS C22000 Corrosion Resistance

One of the significant benefits of Bronze UNS C22000 is its excellent corrosion resistance. Due to its high copper content, it is resistant to atmospheric corrosion and has good resistance to most chemicals. It is also resistant to tarnishing, which makes it an ideal material for decorative indoor and outdoor fixtures.

UNS C22000 Heat Treatment and Machinability

Bronze UNS C22000 can be heat-treated to improve its mechanical and physical properties. The material can be annealed or softened at 500°C for 30 minutes. Additionally, the presence of lead in the composition enhances the material’s machinability.

UNS C22000 Welding and Fabrication

Bronze UNS C22000 can be readily welded using brazing or soldering techniques. Fusing with other materials, such as steel, requires special preparation due to differences in thermal expansion. It is also easy to fabricate and can be rolled, stamped, or drawn into different shapes and sizes.


Bronze UNS C22000 is a popular material in manufacturing due to its excellent mechanical and physical properties. Its high copper content enhances its strength and electrical conductivity, while the zinc content improves its resistance to wear and tear. The material’s excellent corrosion resistance, machinability, and ease of fabrication make it versatile for various applications. Whether you require a material for decorative fixtures or high-stress machine parts, Bronze UNS C22000 is the perfect solution.

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