CDA360 (Free-Cutting Brass)
CDA360 Free-Cutting Brass is a copper-zinc-lead alloy designed for excellent machinability and clean cutting performance. It is commonly used for rods, bars, shapes, valves, fittings, fasteners, and precision machined components.
- Description
- Product Specifications
Description
CDA360 Free-Cutting Brass is widely used where components need to be machined accurately and efficiently. Its high machinability rating makes it well suited to automatic screw machine parts, threaded inserts, valve components, plumbing fittings, fasteners, and industrial brass parts.
The alloy offers excellent soldering, good brazing, and fair capacity for hot and cold forming. It is not recommended for most welding methods, making it best suited to machined, threaded, knurled, and formed brass components rather than welded fabrication.
Key Features:
- Free-cutting brass alloy
- Machinability rating of 100
- Excellent for machining, roll threading, and knurling
- Excellent soldering suitability
- Good brazing suitability
- Fair hot forming and cold working capacity
- Commonly used for rods, bars, shapes, valves, and wire
- Suitable for fittings, fasteners, valve parts, plumbing goods, and screw machine products
| Element | Composition | Nominal |
|---|---|---|
| Copper (Cu) | 60.0-63.0% | 61.5% |
| Lead (Pb) | 2.5-3.0% | 2.7% |
| Iron (Fe) | 0.35% max | – |
| Zinc (Zn) | Remainder | 35.4% |
| Cu + Named Elements | 99.5% min | – |
| Melting Point – Liquidus | 899°C |
|---|---|
| Melting Point – Solidus | 888°C |
| Density | 8.5 g/cm³ at 20°C |
| Specific Gravity | 8.5 |
| Electrical Resistivity | 6.63 microhm-cm at 20°C |
| Electrical Conductivity | 0.152 MegaSiemens/cm at 20°C |
| Thermal Conductivity | 116.0 W/m.K at 20°C |
| Coefficient of Thermal Expansion | 20.5 x 10⁻⁶ per °C, 20-300°C |
| Specific Heat Capacity | 377.1 J/kg.K at 293 K |
| Modulus of Elasticity | 96500 MPa |
| Modulus of Rigidity | 36500 MPa |
| Soldering | Excellent |
|---|---|
| Brazing | Good |
| Butt Weld | Fair |
| Cold Working | Fair |
| Hot Forming | Fair |
| Machinability Rating | 100 |
| Common Fabrication Processes | Machining, roll threading and knurling |
| Common Temper Options | H01, H02, H04, M30 and O60 |
| Common Forms | Bar, rod, shapes, valves and wire |
| Typical Uses | Fittings, fasteners, valve parts, plumbing goods, screw machine products, threaded inserts and faucet components |
