Phosphor Bronze Wire from InterWire is ASTM B159 standard specification for Phosphor Bronze Wire.
Chemical Requirements: (Composition, %)
| Copper Alloy UNS# | Copper | Lead, max | Iron, max | tin | zinc, max | phosphorus |
|---|---|---|---|---|---|---|
| C51000 | Remainder* | 0.05 | 0.10 | 4.2-5.8 | 0.30 | 0.03-0.35 |
* Taken by difference
Mechanical Requirements for Round or Square Wire for General Purposes
| Code | Temper Designation | Tensile Strength KSI Min |
|---|---|---|
| O61 | Annealed | 43.0-58.0 |
| H01 | Quarter-Hard | 60.0-76.0 |
| H02 | Half-Hard | 80.97.0 |
| H03 | Three Quarter-Hard | 96.0-115.0 |
| H04 | Hard | 108.0-128.0 |
| H08 | Spring | See next table |
Mechanical Requirements for H08 (Spring Temper) for UNS No. C51000 Round or Square Wire
| Diameter or Distance Between Parallel Surfaces, inches | Tensile Strength KSI, minimum | Elongation in 2 inch minimum, % |
|---|---|---|
| 0.025 and under | 145.0 | N/A |
| Over 0.025 to 0.0625 | 135.0 | N/A |
| Over 0.0625 to 0.125 | 130.0 | N/A |
| Over 0.125 to 0.250 | 125.0 | N/A |
| Over 0.250 to 0.375 | 120.0 | 5.0 |
| Over 0.375 to 0.500, incl | 105.0 | 9.0 |