Phosphor Bronze is an excellent bearing alloy due to the inclusion of tin and phosphor. Up to 0.50% phosphor offers increased wear resistance in parts such as bushings and sleeve bearings. Strength and corrosion resistance are enhanced due to an upper limit of 4.5% tin. These alloys are also known for excellent soldering ability, low coefficient of friction and fine grain.
Typical Applications:
| Chemical Composition | ||||||
| Element | ||||||
| Cu | Pb | Sn | Zn | Fe | P | |
| Min (%) | 0.8 | 3.5 | 0.03 | |||
| Max (%) | Rem | 1.2 | 5.8 | 0.30 | 0.10 | 0.35 |
| (1) Cu + Sum of Named Elements 99.5% min. | ||||||
| Mechanical Properties | ||
| Temper Code | Tensile Strength (ksi) | Rockwell B scale |
| H02 | 55 Min for Standard 70 Max for Standard | 70 Typ |
| M20 | 40 Min for Standard 58 Max for Standard | |
| H06 | 84 Min for Standard 99 Max for Standard | 91 Typ |
| H10 | 96 Min for Standard 108 Max for Standard | 94 Typ |
| H04 | 72 Min for Standard 87 Max for Standard | 86 Typ |
| O60 | 40 Min for Standard 55 Max for Standard | 28 Typ |
| H08 | 91 Min for Standard 106 Max for Standard | 94 Typ |
| H02 | 62 Typ | 70 Typ |
| M20 | 49 Typ | |
| H06 | 91 Typ | 91 Typ |
| H10 | 102 Typ | 94 Typ |
| H04 | 80 Typ | 86 Typ |
| O60 | 47 Typ | 28 Typ |
| H08 | 98 Typ | 94 Typ |
| Chemical Composition | ||||||
| Element | ||||||
| Cu | Pb | Sn | Zn | Fe | P | |
| Min (%) | 3.0 | 3.5 | 1.5 | 0.01 | ||
| Max (%) | Rem | 4.0 | 4.5 | 4.5 | 0.10 | 0.50 |
| Mechanical Properties | |||||
| Temper Code | Tensile Strength (ksi) | YS-0.5% Ext (ksi) | Elongation (%) | Rockwell B scale | Section Size (in) |
| H04 | 75 Typ | 63 Typ | 15 Typ | 0.5 | |
| H04 | 68 Typ | 57 Typ | 20 Typ | 80 Typ | 1 |
| H04 | 75 Typ | 63 Typ | 15 Typ | 83 Typ | 0.5 |