Material · Copper Alloys
Phosphor Bronze C510
The spring bronze: fatigue resistance and low-friction wear for contacts and bushings.
Price index: $$$
Material properties
| Parameter | Value |
|---|---|
| Tensile strength | ~470 MPa (H02) |
| Yield strength | ~345 MPa (temper dependent) |
| Hardness | ~80 HRB |
| Density | 8.86 g/cm³ |
Choose it when
When a copper alloy must flex and survive: tin-phosphorus chemistry gives the best fatigue endurance of the common coppers, plus good conductivity and corrosion behavior for electrical springs.
Look elsewhere when
Costlier and slower-machining than brass — for static turned parts C360 is the economical pick; for maximum conductivity, C110; for heavy bearing loads, consider aluminum bronze instead.
Compatible finishes
As-Machined
The baseline finish: straight off the machine, fastest and cheapest.
Nickel Plating (Electrolytic)
Bright, polishable nickel for decorative protection and contact underlayers.
Tin Plating
The solder-friendly finish: tin for bus bars, terminals and food-contact hardware.
Polishing
Progressive abrasives down to mirror: the finish for optics, molds and show surfaces.
Vibratory Tumbling
Batch deburring by the bowl-full: every edge broken, every burr gone, at volume prices.
Laser Marking
Permanent identification with zero dimensional change: serials, logos and codes burned in, not stuck on.
Typical applications
- Spring contacts and connector blades
- Bushings and sliding wear parts
- Instrument springs and diaphragms
Compared with similar grades
| Property | Phosphor Bronze C510 | Copper C110 | Brass C260 (Cartridge Brass) | Brass C360 (Free-Machining) |
|---|---|---|---|---|
| Tensile strength | ~470 MPa (H02) | 220–345 MPa (temper) | ~370 MPa | 385 MPa |
| Yield strength | ~345 MPa (temper dependent) | 70–320 MPa (temper) | ~250 MPa (temper dependent) | 310 MPa |
| Hardness | ~80 HRB | 40–95 HRF | ~55 HRB | 78 HRB |
| Density | 8.86 g/cm³ | 8.94 g/cm³ | 8.53 g/cm³ | 8.50 g/cm³ |
| Price index | $$$ | $$$ | $$$ | $$ |
| Machinability | 3/5 | 2/5 | 4/5 | 5/5 |
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