Description
Product Details of Atomfair Tin-Phosphorus Bronze Foil (C5191/C5210)
Atomfair tin-phosphorus bronze foil (C5191/C5210) is a high-performance alloy foil with copper, tin and phosphorus as its core components. It features outstanding properties such as high fatigue strength, excellent elasticity and corrosion resistance, making it suitable for high-end precision manufacturing scenarios. It supports customized production and meets international standard requirements.
1. Basic Product Information
| Alloy Model | Corresponding Standard | Density (g/cm? | Tin (Sn) Content (%) | Phosphorus (P) Content (%) | Copper (Cu) Content (%) | Core Characteristics |
|---|---|---|---|---|---|---|
| C5191 | QSN 6.5-0.1 | 8.83 | 6.0-7.0 | 0.1-0.25 | 93.3 | High fatigue strength, excellent elasticity & wear resistance; Non-magnetic; Corrosion-resistant; Excellent weldability; No sparks when impacted; Good electrical conductivity, low heat generation, safe |
| C5210 | Qsn8-0.3 | 8 | 7.0-9.0 | 0.03-0.25 | 91.9 | Same as C5191 core characteristics |
2. Specification and Tolerance
| Thickness range (mm) | Thickness tolerance (mm) | Width range (mm) | Width tolerance (mm) | Hardness state |
|---|---|---|---|---|
| 0.01-0.06 | ±0.002 | 4.0-650 | ±0.1 | O, 1/4H, 1/2H, H, EH, SH, etc. (Supports customization) |
| 0.06-0.15 | ±0.003 | 4.0-650 | ±0.1 |
3. Mechanical Properties (Execution standard: JIS)
| Alloy model | Hardness state | Tensile strength (Rm/N/mm? | Elongation (%) | Vickers hardness (HV) |
|---|---|---|---|---|
| C5191 | O | 315 | 40 | – |
| C5191 | 1/4H | 390-510 | 35 | 100-160 |
| C5191 | 1/2H | 490-610 | 20 | 150-205 |
| C5191 | H | 590-680 | 8 | 180-230 |
| C5191 | EH | 630 | 5 | 210-230 |
| C5210 | 1/2H | 470-610 | 27 | 140-205 |
| C5210 | H | 590-705 | 20 | 185-235 |
| C5210 | EH | 680-780 | 11 | 205-230 |
| C5210 | SH | 735-835 | 9 | 230-270 |
Note: Products with other performance parameters can be provided according to customer requirements.
4. Processing and Production Advantages
- Made by rolling process with spherical microstructure.
- Hardness state can be flexibly controlled through annealing process.
- Excellent processing performance, easy to form and combine with other materials.
- Supports customization of thickness, width & performance, reducing production costs and improving efficiency.
II. Product Applications
Relying on its multi-dimensional outstanding performance, the product is widely used in high-end precision manufacturing and electronics fields. Core applications are as follows:
1. Electronic Components Field
Core base material for precision electronic components (relay contacts, connectors, terminals, etc.). Ensures stable signal transmission with good conductivity, corrosion resistance & non-magnetic properties (suitable for high-frequency/high-precision scenarios). High fatigue strength & elasticity for elastic components (spring pieces, springs) with long-term durability.
2. Precision Instruments Field
Wear-resistant components (gears, bearing bushings) for high-precision instruments, reducing wear and extending service life. Spark-free upon impact, safe for flammable/explosive environments.
3. Sealing & Welding Field
Sealing component for high-air-tightness castings, with corrosion resistance & excellent weldability/brazing performance. Suitable for aerospace, medical devices and other high-sealing scenarios.
4. Other High-End Scenarios
Key components for automotive electronics (connector spring pieces) & communication equipment (base station signal transmission parts). Customizable performance meets personalized high-end manufacturing demands.
If you?e interested, have any questions, or have specific customization requirements, please feel free to contact us at inquiry@atomfair.com.

