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What is Annealed Copper? Properties, Uses and Composition

Annealed Copper

Do you have a project in mind that requires a malleable metal? If so, annealed copper might be the right choice for you! Annealed copper is a special type of copper alloy that has been processed through heating and cooling to increase its malleability and workability. In this article, we’ll break down all the basics about annealed copper, including its properties, uses and composition.



What is Annealed Copper?

Annealed copper is a type of metal alloy that has been heat-treated in order to make it soft and malleable. This process makes it much easier to shape and form into different shapes or sizes without damaging the metal itself. The annealing process also removes any mechanical stresses from the metal, which helps make it more durable for long-term use.

Annealed Copper Composition

Annealed copper consists mainly of two elements: copper (Cu) and zinc (Zn). Other metals, such as nickel (Ni) and iron (Fe), may also be present depending on the alloy being used. The amount of each element present varies depending on the specific application; some alloys may contain up to 50% Zn while others may only contain 10%. In general, however, most alloys will contain between 15% – 30% Zn with the remaining being Cu or other metals such as Ni or Fe if necessary.

Element Content (%)
Nickel, Ni 3-4
Manganese, Mn 0.050 max
Copper, Cu Balance

Annealed Copper Properties

The most notable property of annealed copper is its malleability. This makes it easy to work with in crafts or other projects where shaping the material is necessary. It also has excellent conductivity and corrosion resistance, making it ideal for electrical wiring or plumbing projects. Additionally, annealed copper has excellent thermal conductivity and can withstand high temperatures without becoming brittle or breaking down.

Physical Properties

Properties Metric Imperial
Density 8.9 g/cm3 0.323 lb/in3

Mechanical Properties

Properties Metric Imperial
Tensile strength 240 MPa 35 ksi
Yield strength 75 MPa 11 ksi
Elongation 55% 55%
Hardness, Rockwell 40 40

Annealed Copper Uses

Due to its unique properties, there are many potential uses for annealed copper. It can be used in electrical wiring due to its excellent conductivity and corrosion resistance. It’s also commonly used in plumbing because of its ability to withstand high temperatures without melting or breaking down. Additionally, annealed copper can be used for crafting projects due to its malleability as well as for decorative purposes due to its attractive colour when polished.




Annealing is a useful process which allows materials like copper alloy to become soft and malleable enough for working with by hand or machine operations like cutting and forming into shapes while still maintaining their strength and durability over time. While there are other types of metals that have similar properties as annealed copper — such as brass — none are quite as resistant to corrosion nor possess such good electrical conductivity capabilities as this particular alloy does! Whether you’re looking for something strong yet pliable enough for your next craft project or something highly reliable in an exposed environment like plumbing systems, then annealed copper might just be what you need!

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