ThePipingMart Blog Grades Copper Alloy UNS C67000 – Composition, Properties, and Uses

Copper Alloy UNS C67000 – Composition, Properties, and Uses


As industries continue to evolve and demand more efficient materials, alloys like C67000 are gaining popularity. C67000 is an excellent solution for companies that require a material that can withstand high stress, corrosion, and heat. This alloy is an excellent alternative for non-ferrous metals in several industries, such as marine, aerospace, electronics, and plumbing. In this post, we discuss the composition, properties, uses, and benefits of C67000.

C67000 Composition

C67000 is an aluminium brass alloy that contains copper, zinc, and aluminium. Its composition can vary based on the manufacturer, but typically, it has 76-79% copper, 19-22% zinc, and 1-3% aluminium. The aluminium content in this alloy provides high strength and corrosion resistance, while zinc enhances its machinability.

Element Content (%)
Copper, Cu 63-68
Aluminum, Al 3.0-6.0
Manganese, Mn 2.5-5.0
Iron, Fe 2.0-4.0
Tin, Sn 0.5
Lead, Pb 0.2
Zinc, Zn Remainder

C67000 Mechanical Properties

C67000 boasts excellent mechanical properties, making it ideal for high-stress environments. Its ultimate tensile strength is between 450-650MPa, its yield strength ranges from 170-520MPa, and its elongation is 12-40%. The alloy’s rigidity, strength, and durability make it desirable for use in industries requiring excellent mechanical properties.

Properties Metric Imperial
Tensile strength 386 MPa 55.9 ksi
Modulus of elasticity 110 GPa 16000 ksi

C67000 Physical Properties

C67000 features good thermal conductivity, electrical conductivity, and excellent corrosion resistance. Its melting point ranges from 880°C to 940°C, and its density is between 8.3-8.52 g/cm³. These properties make it ideal for use in high-heat environments such as in manufacturing valves, pumps, and heat exchangers.

Properties Metric Imperial
Density 8.35 gm/cm3 0.302 lb/in3

C67000 Equivalents

  • ASTM B138
  • SAE J461
  • SAE J46

C67000 Uses

C67000 is an ideal material for use in industries that require high thermal and mechanical performance. For instance, it is commonly used as shipbuilding material for fitting valves and seawater piping systems in marine applications. It is also used as fittings, pumps, and valves in plumbing and HVAC systems. Additionally, it is widely used in electronics, power generation, aerospace, and automotive industries for heat exchangers, radiators, and condensers.

C67000 Corrosion Resistance

One significant advantage of C67000 is its excellent corrosion resistance. It performs exceptionally well in highly corrosive environments such as marine applications and saltwater systems. Unlike other metals that would corrode and rust in these situations, C67000 maintains its high performance, making it an excellent alternative for harsh environments.

C67000 Heat Treatment and Machining

Heat treatment is critical in the production of C67000. This alloy requires heat treatment to enhance its mechanical properties for optimal use. Heat treatment methods such as solution annealing, stress relieving, and ageing can be used. C67000 is easy to machine, and its excellent machinability makes it ideal for various industrial applications.

C67000 Welding

When it comes to welding, C67000 can be welded using all standard welding processes. The most common welding methods are oxy-acetylene, gas tungsten arc, and gas-metal arc welding. However, it is essential to note that the presence of aluminium in the alloy reduces its weldability compared to other non-ferrous alloys.


C67000 is an excellent material solution for industries that require high stress, high corrosion resistance, and high thermal performance. Its properties, such as excellent mechanical and physical properties, corrosion resistance, and easy machinability, make it stand out from other non-ferrous metals. Additionally, its broad range of uses in various industries such as marine, electronics, and plumbing makes it a versatile material. Companies that require a reliable, durable, and efficient solution should consider the potential uses and benefits of C67000 alloy.

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