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C54400 Phosphor Bronze is the finest bearing alloy that the industry has to offer. It is an extremely machinable alloy that is equaled by few in the wrought metal industry as a bearing alloy. When annealed, this metal can be bent, formed, blanked, and stamped.
Typical applications include: bearings, bushings, gears, pinions, shafts, thrust washers, valve parts.
| Weight % | Cu* | Sn | P | Pb | Fe | Zn | other |
|---|---|---|---|---|---|---|---|
| minimum | 85.90 | 3.50 | 0.01 | 3.50 | — | 1.50 | 0.40 |
| maximum | 91.49 | 4.50 | 0.50 | 4.50 | 0.10 | 4.50 | 0.50 |
(*)Cu+Pb+Sn+Zn+P min 99.5
| Characteristics | English | Metric | |
|---|---|---|---|
| Nominal density
(68°F/20°C) |
0.321 lbs/in3 | 8.89 g/cm3 | |
| Specific heat
(212 °F/100°C) |
0.09 BTU/lb – °F | 380 J/KG- °K | |
| Coefficient of thermal
expansion |
68°F – 572°F
20°C – 300°C |
9.6 micro in/in- °F | 17.3 micro m/m- °K |
| Thermal conductivity | 20°C / 68°F | 50 BTU/ft- hr – °F | 87 W/m – °K |
| Electrical resistivity | 20°C / 68°F | 91 nΩ ∙ m | |
| Electrical conductivity | Volumetric:
20°C / 68°F |
19% IACS | |
| Temper | Tensile | Hardness | |||||
|---|---|---|---|---|---|---|---|
| Ultimate | Yield | Elongation
in 50 mm (2 in.) |
Rockwell B | ||||
| KSI | MPa | KSI | MPa | % | |||
| OSO50 – 0.050 mm Grain size | 1 mm
(0.04 in.) thick |
46 | 315 | — | — | 48 | 23 |
| OSO35 – 0.035 mm Grain size | 48 | 330 | — | — | 47 | 28 | |
| OSO25 – 0.025 mm Grain size | 50 | 345 | — | — | 46 | 32 | |
| OSO15 – 0.015 mm Grain size | 51 | 350 | — | — | 46 | 34 | |
| H02 – ½ Hard | 62 | 425 | 54 | 370 | 19 | 70 | |
| H04 – Hard | 80 | 550 | 74 | 510 | 7 | 86 | |
| H06 – Extra Hard | 92 | 635 | — | — | 4 | 91 | |
| H08 – Spring | 98 | 675 | 80 | 550 | 3 | 93 | |
| H10 – Extra Spring | 103 | 710 | — | — | 2 | 95 | |
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