CuSn4Pb4Zn4 (CW456K) is a high-performance copper-tin alloy renowned for its excellent machinability, strength, and corrosion resistance. Ideal for industrial components, electrical connectors, and precision-engineered parts, it offers consistent performance across diverse applications.
Chemical Composition (%)
| Element | Range (%) |
|---|---|
| Fe | ≤ 0.1 |
| Ni | ≤ 0.2 |
| P | 0.01 – 0.4 |
| Pb | 3.5 – 4.5 |
| Zn | 3.5 – 4.5 |
| Sn | 3.5 – 4.5 |
| Te | ≤ 0.2 |
| Others | Total 0.2 |
| Cu | Balance |
This specific composition ensures superior free-machining properties, excellent wear resistance, and high corrosion durability for industrial components.
Mechanical Properties (R450)
| Property | Value |
|---|---|
| Tensile Strength (Rm) MPa | 450 |
| 0.2% Proof Strength (Rp0.2) MPa | 350 |
| Minimum Elongation (%) | 10 |
| Elongation Lo = 100 mm (%) | 6 |
| Brinell Hardness (HB) | 150 |
The alloy combines strength and ductility, making it suitable for machined components and structural parts.
Suitable Casting Processes
| Process | Description |
|---|---|
| GS | Sand Casting |
| GM | Permanent Mould Casting |
| GZ | Centrifugal Casting |
| GC | Continuous Casting |
| GP | Pressure Die Casting |
CuSn4Pb4Zn4 (CW456K) can be manufactured using multiple casting methods, offering flexibility for custom sizes and precision parts.
Material Conditions
| Condition | Description |
|---|---|
| R | Minimum tensile strength and elongation requirements |
| H | Minimum hardness requirements |
Mechanical Characteristics Explained
| Property | Description |
|---|---|
| ReH | Minimum yield strength – resistance to permanent deformation |
| Rm | Maximum tensile strength – ability to withstand stress |
| A | Minimum elongation – ductility measurement |
| J | Notch impact test – toughness under impact |
Applications of CuSn4Pb4Zn4 (CW456K)
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Bearings and bushings for industrial machinery
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Precision electrical connectors
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Gears, shafts, and mechanical components
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Valve components and hydraulic systems
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Free-machining parts for automotive and engineering applications
This alloy is widely selected for durable, high-performance, and corrosion-resistant industrial components.
Why Choose Conex Casting for CuSn4Pb4Zn4?
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Premium quality, grade-certified materials
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Consistent mechanical and chemical properties
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Expert guidance for selecting the correct alloy
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Reliable delivery for industrial and manufacturing needs