CuSn4Pb4Zn4 (CW456K) Copper-Tin Alloy
CuSn4Pb4Zn4 (CW456K) Copper-Tin Alloy
CuSn4Pb4Zn4 (CW456K) is a premium copper-tin alloy designed for high machinability, excellent mechanical performance, and corrosion resistance. It is widely used in precision components, bearings, automotive parts, and electrical applications.
Chemical Composition of CuSn4Pb4Zn4 (CW456K)
| Element | Composition (%) |
|---|---|
| Fe | max 0.1 |
| Ni | max 0.2 |
| P | 0.01 – 0.4 |
| Pb | 3.5 – 4.5 |
| Zn | 3.5 – 4.5 |
| Sn | 3.5 – 4.5 |
| Te | max 0.2 |
| Others | total 0.2 |
| Cu | remainder |
This composition ensures excellent free-machining properties, high strength, and durable corrosion resistance, making it ideal for complex machining operations.
Mechanical Properties of CuSn4Pb4Zn4 (CW456K)
| Property | Value |
|---|---|
| Tensile Strength (Rm) MPa | 450 |
| 0.2% Proof Strength (Rp0.2) MPa | 350 |
| Minimum Elongation at Fracture (%) | 10 |
| Minimum Elongation Lo=100mm (%) | 6 |
| Brinell Hardness (HB) | 150 |
These mechanical properties make CW456K suitable for high-performance engineering applications where both strength and ductility are required.
Casting Processes
| Process Code | Description |
|---|---|
| GS | Sand Casting |
| GM | Permanent Mould Casting |
| GZ | Centrifugal Casting |
| GC | Continuous Casting |
| GP | Pressure Die Casting |
CW456K Copper-Tin Alloy can be processed using multiple casting methods, providing flexibility for customized manufacturing requirements.
Material Conditions
| Condition | Description |
|---|---|
| R | Minimum tensile strength and elongation requirements |
| H | Minimum hardness requirements |
Key Mechanical Properties Explained
| Property | Meaning |
|---|---|
| ReH | Minimum yield strength – resistance to permanent deformation |
| Rm | Tensile strength – maximum stress material can withstand |
| A | Minimum elongation – ductility measure |
| J | Notch impact test – toughness under sudden force |
Applications of CuSn4Pb4Zn4 (CW456K)
Bearings and bushings
Automotive components
Electrical parts and connectors
Mechanical engineering components
Free-machining parts for precision machinery
This alloy is trusted by engineers and manufacturers worldwide for high-performance, durable, and corrosion-resistant components.
Why Choose ConexMetals for CuSn4Pb4Zn4?
High-quality grade-certified materials
Consistent mechanical and chemical properties
Fast and reliable delivery for industrial applications
Expert support for selecting the right copper alloy
