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C51000 Phosphor Bronze alloy is a cold worked bronze which possess higher yield strength than is readily available in most cast bronze products. Typical applications for C51000 phosphor bronze include bearings, bushings, gears, pinions, shafts, thrust washers and valve parts. C51000 Phosphor bronze can be readily brazed or soldered. Capacity for being cold worked is good.
| Weight % | Cu | Sn | P | Pb | Fe | Zn |
|---|---|---|---|---|---|---|
| minimum | 93.6 | 4.2 | 0.03 | — | — | — |
| maximum | 95.6 | 5.8 | 0.35 | 0.05 | 0.1 | 0.3 |
| Characteristics | English | Metric | ||
|---|---|---|---|---|
| Nominal density
(68°F/20°C) |
0.320 lbs/in3 | 8.86 g/cm3 | ||
| Specific heat
(212 °F/100°C) |
0.09 BTU/lb – °F | 380 J/KG- °K | ||
| Coefficient of thermal
expansion |
68°F – 392°F
20°C – 200°C |
9.9 micro in/in- °F | 17.8 micro m/m- °K | |
| Thermal conductivity
|
20°C / 68°F | 48.4 BTU/ft- hr – °F | 84 W/m – °K | |
| Electrical resistivity | 20°C / 68°F | 87 nΩ ∙ m | ||
| Electrical conductivity | 20°C / 68°F | 20% IACS | ||
| Temper | Tensile | Hardness | Fatigue | |||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Ultimate | Yield | Elongation
in 50 mm (2 in.) |
Rockwell B | Fatigue
strength |
||||||
| KSI | MPa | KSI | MPa | % | KSI | MPa | ||||
| OSO50 – 0.05
Grain size |
1 mm
(0.04 in.) thick |
47 | 325 | 19 | 130 | 64 | 26 | — | — | |
| OSO35 – 0.035 Grain size | 49 | 340 | 20 | 140 | 58 | 28 | — | — | ||
| OSO25 – 0.025 Grain size | 50 | 345 | 21 | 145 | 52 | 30 | — | — | ||
| OSO15 – 0.015 Grain size | 53 | 365 | 22 | 150 | 50 | 34 | — | — | ||
| H02 – ½ Hard | 68 | 470 | 55 | 380 | 28 | 78 | — | — | ||
| H04 – Hard | 81 | 560 | 75 | 515 | 10 | 87 | 27 | 185 | ||
| H06 – Extra Hard | 92 | 535 | 80 | 550 | 6 | 93 | — | — | ||
| H08 – Spring | 100 | 690 | — | — | 4 | 95 | 22 | 150 | ||
| H10 – Extra
Spring |
107 | 740 | — | — | 4 | 97 | — | — | ||
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