CZ121, also known by its European designation CW614N, is a widely recognized alpha/beta brass alloy primarily composed of copper and zinc.
Key Characteristics and Composition
This specific brass alloy is engineered for its beneficial properties, particularly its enhanced machinability. Its composition is carefully balanced to achieve these characteristics.
The general specification for CZ121 includes:
| Element | Content Range |
|---|---|
| Zinc | 37-45% |
| Lead | 3% |
| Copper | Balance |
The presence of lead, at approximately 3%, is a crucial aspect of CZ121's specification. While lead is typically insoluble in the microstructure of brass, its soft particles are strategically introduced. These particles act as chip breakers during machining processes, significantly improving the material's ability to be cut and shaped with greater ease and efficiency. This makes CZ121 an ideal choice for applications requiring extensive machining.
Material Properties and Applications
As an alpha/beta brass, CZ121 offers a good balance of strength and ductility. Its composition ensures it is well-suited for various manufacturing processes, especially those involving turning, milling, and drilling. The improved machinability leads to:
- Faster machining speeds: Reduced time per part.
- Extended tool life: Less wear and tear on cutting tools.
- Better surface finish: Producing smoother components.
These attributes make CZ121 a preferred material in industries such as plumbing, automotive, electrical, and general engineering, where components requiring intricate machining are common.
