CW617N, also widely recognized as CZ122, is a specific type of brass alloy often referred to as Stamping Brass. Its composition is carefully formulated to provide excellent hot working properties and good machinability, making it ideal for various industrial applications.
Nominal Composition of CW617N (CZ122)
The precise composition of CW617N ensures its suitability for processes like hot stamping and forging, while the controlled lead content enhances its machinability. The table below details its nominal elemental makeup:
| Element | Percentage Range |
|---|---|
| Copper (Cu) | 56.0 - 58.5% |
| Lead (Pb) | 1.5 - 2.5% |
| Iron (Fe) | 0.3% max |
| Zinc (Zn) | Remainder |
| Total Impurities | 0.7% max |
In this composition, copper forms the primary base metal, while zinc is the main alloying element that gives brass its characteristic properties. The addition of lead, although present in a small percentage, is crucial as it acts as a chip breaker during machining, significantly improving the alloy's workability without compromising its hot formability. Iron and other impurities are kept to a minimum to maintain the alloy's desired performance characteristics.
Characteristics and Applications of CW617N Stamping Brass
CW617N's balanced composition provides a range of beneficial properties, making it a versatile material in many manufacturing sectors. For a broader understanding of brass alloys, refer to resources like the Copper Development Association.
Key Characteristics
- Excellent Hot Working Properties: CW617N exhibits superior formability at elevated temperatures, making it highly suitable for processes such as hot stamping, hot pressing, and forging. This allows for the creation of complex shapes with good detail and surface finish.
- Good Machinability: The controlled lead content ensures that CW617N can be easily machined, drilled, and threaded. This is critical for manufacturing components that require precise dimensions and intricate designs.
- Corrosion Resistance: Like many brass alloys, CW617N offers good resistance to corrosion in various environments, contributing to the longevity of components made from it.
- Moderate Strength: It provides adequate mechanical strength for its intended applications, balancing formability with durability.
Typical Applications
Given its excellent hot working and machining properties, CW617N is commonly used in:
- Plumbing Fittings: Due to its corrosion resistance and ease of shaping into intricate designs for valves, connectors, and other plumbing components.
- Valve Bodies: Widely utilized in the manufacturing of valve bodies for water, gas, and other fluid control systems.
- Hot Stamped and Forged Parts: Components requiring high precision and good surface finish, produced through hot pressing or forging techniques.
- General Engineering Components: Various parts for machinery, hardware, and automotive industries where formability and machinability are essential.
- Door and Window Hardware: Including hinges, handles, and locks, benefiting from the alloy's durability and aesthetic appeal.
