UNS C33000 Copper Alloy Chemical Composition & Properties, Grades, Charts and PDF Online

UNS C33000 is the only copper-zinc material out there that is the most pliable of all and also demonstrates both the high conductivity of electricity as well as heat transfer. Its almost constant chemical composition consists of 65% of copper (Cu), 33% of zinc (Zn) and some other additions of lead (Pb) and iron (Fe). In electric appliances industry, copper is used frequently where it may be seen in contacts, switches, and connectors formed from this metal. However, it is worth noting that this alloy is not only used in plumbing systems, but also it is very useful in all kinds of hardware applications and can be used as an attractive decorating piece. The assured products of 33000 material are corrosion resistant and formable that makes them suitable for various manufacturing processes. It manifests in the mechanical strength because of its high tensile strength and moderate elasticity. The downloadable data such as grades, characteristics, drawings and PDF can be found in the materials databases as well as in the websites of the manufacturer.

UNS C33000 Copper Alloy Chemical Composition And Grade Table

The UNSC C33000 is copper-base alloy and this allowing excellent machining as well as protection from corrosion. It is copper (Cu) which is the major element by mass other than small percentage of lead (Pb) and sulfur (S). This alloy, which is referred under the unified numbering system (UNS) as C33000, is the one at hand. It is seen that it gives off higher thermal and electrical conductivity than other materials and this makes it to be employed in electrical parts, piping fitting and designer hardware. Good conductivity is another feature, as well as good solderability and brazability. Uns C33000 is a popular high-strength copper alloy which is frequently used as a major material by those who want to create robust and reliable items.

UNS C33000 Copper Alloy Composition Table
Elements Cu Pb Zn Fe
Min (%) 65.0 0.8 - -
Max (%) 65.0 1.5 Rem 0.15

The Advantages and Disadvantages of UNS C33000 Copper Material Properties, C33000 Properties


  • Excellent Machinability: C33000 Copper is known for its excellent machinability that suits well to the precise cutting, shaping, and forming actions during the manufacturing process.

  • Good Strength: This copper alloy is strong enough to be used for applications that need a moderate strength, for example connectors and hardware.

  • Corrosion Resistance: UNS C33000 Copper has a good corrosion resistance, thus it can be used in various environments, such as marine and industrial.

  • Electrical Conductivity: It has high electric conductivity, which is key for electrical components and applications that need to transmit the electricity in efficient manner.

  • Cost-Effective: UNS C33000 Copper has an ideal balance in some aspects as a lower priced copper alloy, thus, it’s suitable for certain applications in cost-effect manner.


  • Limited Strength: C33000 Copper is not as strong as some other copper alloys or alternative materials and therefore is not suitable for high-stress applications.

  • Wear Resistance: While it has easy machining, UNS C33000 Copper might have low wear resistance than some other materials thus needing consideration in applications with severe conditions of abrasion and friction.

  • Dezincification Potential: As in a lot of copper alloys, UNS C33000 Copper is prone to dezincification in certain environments resulting in the mechanical properties degradation but premature failure.

  • Weldability Concerns: Some grades of UNS C33000 Copper may not be suitable for welding, and welding process and procedures will need to be carefully selected to ensure strong and reliable joints without compromising material properties.

  • Environmental Considerations: The copper alloy production and processing that include the UNS C33000 Copper may have environmental impacts such as mining, refining, and waste disposal, and we should be concern about the environment and the regulations.

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Frequently Asked Questions

What is the chemical make-up of UNS C33000 Copper Alloy?

The chemical formula is typically copper (Cu) with other alloying elements like zinc (Zn), and small amounts of other elements to evolve the performance.

What are the main features of UNS C33000 Copper Alloy?

The UNS C33000 Copper Alloy is widely noted for its great machinability, good strength, corrosion resistance and electrical conductivity, which make it adaptable for use in many different applications.

Are there different grades or variations to UNS C33000 Copper Alloy accessible?

Though there may not be separate grades, UNS C33000 Copper Alloy may be available in different tempers or conditions, like annealed or hardened, to fulfill the needs of different applications.

Is there a downloadable PDF document of UNS C33000 Copper Alloy containing detailed information available?

Indeed, the PDF handouts could be used which may be available on the manufacturers' websites, industrial associations or the technical databases, and include chemical composition, mechanical properties, applications and handling guidelines.