Phosphor bronzes are a key group of engineering alloys recognized for their toughness and strength along with high corrosion resistance and exceptional plating and spring properties. They are considered to be alloys of copper with 3.5-10% tin and a phosphorus content of up to 0.4%, which is incorporated as a deoxidizing agent during the melting process.
Phosphor bronze alloys are used widely for electronic and electrical components, marine hardware, fasteners, connectors, valve spindles, pump and drive shafts, gears, instrumentation components, bearing bushes and several other critical applications where the specific blend of spring properties, mechanical properties, oxidation and corrosion resistance, wear resistance and low magnetic permeability can be used to full advantage.
1.High load capacity Good anti-wearing
2.Low coefficients of friction
3.Good heat conductivity
4.High corrosion resistence
5.Long life and maintenance-free
6.No contaminant by oil or grease
Cu | Sn | P | Pb | Zn | |
---|---|---|---|---|---|
PB102 | Rem | 5.0 | 0.2 | - | - |
PB103 | Rem | 7.0 | 0.2 | - | - |
PB104 | Rem | 8.0 | 0.2 | - | - |
COLPHOS 90 | Rem | 5.0 | 0.2 | 4.0 | 3.0 |
PB102 | PB103 | PB104 | COLPHOS 90 | |
---|---|---|---|---|
Ultimate Tensile Strength (N/mm2) | 350 - 500 | 460 - 500 | 450 - 600 | 350 - 450 |
0.2% Proof Strength (N/mm2) | 280 - 420 | 380 - 420 | 320 - 450 | 250 - 350 |
Elongation (%) | 12 - 25 | 12 - 18 | 15 - 20 | 10 - 15 |
Machinability Rating | 20 | 20 | 20 | 90 |
Round Bar Weight and Stock Sizes:
Diameter | Weight | Diameter | Weight | Diameter | Weight | |||
---|---|---|---|---|---|---|---|---|
ins | kg/ft | kg/m | ins | kg/ft | kg/m | ins | kg/ft | kg/m |
0.094 | 0.01 | 0.04 | 20 mm | 0.83 | 2.73 | 2.250 | 6.80 | 22.32 |
0.125 | 0.02 | 0.07 | 0.875 | 1.03 | 3.38 | 2.500 | 8.40 | 27.55 |
0.156 | 0.03 | 0.11 | 1.000 | 1.34 | 4.41 | 2.625 | 9.26 | 30.37 |
0.188 | 0.05 | 0.16 | 1.125 | 1.70 | 5.58 | 2.750 | 10.16 | 33.34 |
0.250 | 0.08 | 0.28 | 1.250 | 2.10 | 6.89 | 3.000 | 12.09 | 39.67 |
0.313 | 0.13 | 0.43 | 1.375 | 2.54 | 8.33 | 3.250 | 14.19 | 46.56 |
0.375 | 0.19 | 0.62 | 1.500 | 3.02 | 9.92 | 3.500 | 16.46 | 54.00 |
0.438 | 0.26 | 0.84 | 1.625 | 3.55 | 11.64 | 3.750 | 18.89 | 61.99 |
0.500 | 0.34 | 1.10 | 1.750 | 4.12 | 13.50 | 4.000 | 21.50 | 70.53 |
0.625 | 0.54 | 1.72 | 1.875 | 4.72 | 15.50 | 4.500 | 27.21 | 89.26 |
0.688 | 0.64 | 2.08 | 2.000 | 5.37 | 17.63 | 5.000 | 33.59 | 110.20 |
0.750 | 0.76 | 2.48 | 2.125 | 6.07 | 19.91 | 130 mm | 35.20 | 115.47 |