Hyper Phosphor Bronze and Phosphor Bronze
Overview
For decades, we have been working to improve the properties of phosphor bronze. Thanks to precision process control technology, we have succeeded in developing Hyper Phosphor Bronze, with superior strength and bend formability despite having similar alloy makeup as conventional products. We have obtained a wide range of patents covering Hyper Phosphor Bronze, and have achieved the top market share in the industry.
Phosphor bronze is a copper alloy that has tin and phosphorus as its main alloying elements. Combining high strength and bend formability, it is used mainly for connector pins in personal computers, mobile phones, and other electronic devices. Today this alloy has become an indispensable metal material in our data-driven society.
Compare Features and Typical Applications
Hyper Phosphor Bronze
| Alloy name | Composition | Features | Applications |
|---|---|---|---|
| Cu-8Sn-0.1P | Phosphor bronze for springs, with enhanced strength and bend formability | Connectors, switches | |
| Cu-10Sn-0.1P | Strength superior to C5210 (HP) | Connectors, switches |
Phosphor Bronze
| Alloy name | Composition | Features | Applications |
|---|---|---|---|
| C5210 | Cu-8Sn-0.1P | High spring properties and bend formability | Connectors, switches |
| C5191 | Cu-6Sn-0.1P | Spring properties and bend formability | Connectors, switches |
Compare Composition and Properties
Composition and Properties of Hyper Phosphor Bronze and Phosphor Bronze
Chemical Composition (wt%)
| Copper Alloy Name | Hyper Phosphor Bronze | Phosphor Bronze | ||
|---|---|---|---|---|
| C5210 (HP) |
C5240 (HP) |
C5191 | C5210 | |
| Chemical Composition (wt%) | Cu : Bal. Sn : 8.0 P : 0.1 |
Cu : Bal. Sn : 10.0 P : 0.1 |
Cu : Bal. Sn : 6.0 P : 0.1 |
Cu : Bal. Sn : 8.0 P : 0.1 |
Physical Properties
| Copper Alloy Name | Hyper Phosphor Bronze | Phosphor Bronze | ||
|---|---|---|---|---|
| C5210 (HP) |
C5240 (HP) |
C5191 | C5210 | |
| Specific Gravity | 8.80 | 8.78 | 8.83 | 8.80 |
| Modulus of Elasticity (GPa) | 110 | 100 | 110 | 110 |
| Electrical Conductivity (%IACS @20℃) | 12 | 10 | 14 | 13 |
| Poisson's Ratio | 0.33 | 0.33 | 0.33 | 0.33 |
Mechanical Properties
| Copper Alloy Name | Hyper Phosphor Bronze | Phosphor Bronze | |||
|---|---|---|---|---|---|
| C5210 (HP) |
C5240 (HP) |
C5191 | C5210 | ||
| Tensile Strength (MPa) | 1/4H | - | - | 390-510 | - |
| 1/2H | - | - | 490-610 | 470-610 | |
| H | 590-705 | 650-750 | 590-685 | 590-705 | |
| EH | 685-785 | 750-850 | ≧635 | 685-785 | |
| SH | 735-835 | 850-950 | - | 735-835 | |
| ESH | 770-885 | 950-1050 | - | - | |
| XSH | 835-1000 | 1000-1200 | - | - | |
| 0.2% Yield Strength (MPa) |
1/4H | - | - | - | - |
| 1/2H | - | - | - | - | |
| H | （565） | 580-690 | - | （528） | |
| EH | （688） | 650-790 | - | （667） | |
| SH | （760） | 780-920 | - | （710） | |
| ESH | （823） | 900-1030 | - | - | |
| XSH | （879） | 950-1190 | - | - | |
| Elongation (%) | 1/4H | - | - | ≧35 | - |
| 1/2H | - | - | ≧20 | ≧27 | |
| H | ≧20 | ≧11 | ≧8 | ≧20 | |
| EH | ≧11 | ≧9 | ≧5 | ≧11 | |
| SH | ≧9 | ≧5 | - | ≧9 | |
| ESH | ≧5 | ≧1 | - | - | |
| XSH | ≧1 | - | - | - | |
| Vickers Hardness (Hv) |
1/4H | - | - | 100-160 | - |
| 1/2H | - | - | 150-205 | 140-205 | |
| H | 185-235 | 200-240 | 180-230 | 185-235 | |
| EH | 210-260 | 230-270 | ≧200 | 210-260 | |
| SH | 230-270 | 250-290 | - | 230-270 | |
| ESH | 245-285 | 270-310 | - | - | |
| XSH | - | ≧290 | - | - | |
- Standard specs. (Typical values)
Bend formability
| Copper Alloy Name | Hyper Phosphor Bronze | Phosphor Bronze | |||
|---|---|---|---|---|---|
| C5210 (HP) |
C5240 (HP) |
C5191 | C5210 | ||
| Minimum Bend Radius / t Badway |
1/2H | - | - | - | - |
| H | 0.0 | 0.0 （t=0.1mm） |
- | 0.5 | |
| EH | 0.5 | 1.0 （t=0.1mm） |
- | 2.0 | |
| SH | 2.0 | 3.0 （t=0.1mm） |
- | 2.5 | |
| ESH | 4.0 | - | - | - | |
- Bad way 90°W-shape Bending Width=10mm
| Explanation of technical terms |
|---|
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