Phosphor Bronze Materials
Phosphor bronze is a copper-tin-phosphorus alloy known for its exceptional spring properties, fatigue resistance and corrosion resistance. These characteristics make phosphor bronze stamping the preferred choice for components that must maintain contact force and electrical performance over millions of cycles.
ISTAMPING produces precision phosphor bronze parts - spring contacts, clips, relay components and connector terminals - with controlled grain structure and burr-free stamping, ensuring consistent elastic behavior and long service life.
Key Properties
| Property | Value |
|---|---|
| Spring Performance | Excellent elastic limit and fatigue resistance |
| Conductivity | Moderate (≈15% IACS) but stable under repeated flexing |
| Corrosion Resistance | Very good in atmospheric and marine environments |
| Formability | Good; suitable for bending, forming and progressive stamping |
| Finishing | Tin or nickel plating; passivation for contact applications |
Typical Applications
- Spring contacts & clips
- Relay & switch components
- Connector terminals
- Bellows & diaphragms
- Fuse clips
- Electrical sockets
Common Alloys
C51000, C52100, C51100, C51900, C52400
Finishing & Coatings
- Tin plating (solderability for contact applications)
- Nickel plating (wear & tarnish resistance)
- Passivation for stable contact resistance
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