![Phosphor Bronze Grade-IV [ PB-IV ]](/wp-content/uploads/2018/08/RCI-Logo-01.png){kind=logo}
| Alloy Names (as per RoHS specifications) | |
|---|---|
| IS/ISO | CuSn8 |
| DIN CEN/TS 13388 | CW453K |
| UNS | C52100 |
| JIS | C5210 |
| Chemical Composition | Weight percentage |
|---|---|
| Tin [Sn] | 7.5 % to 9.0 % |
| Phosphorus [P] | 0.02 % to 0.10% |
| Zinc [Zn] | 0.30% Maximum |
| Lead [Pb] | 0.05 % Maximum |
| Copper [Cu] | Remainder % |
| Characterists |
|---|
|
| Main Applications |
|---|
| Electrical : Contact Springs,Electronic Connectors, Electrical Connectors,Cold Headed Parts,Contact Blades,Wire Brushes,Switch, Parts,Fuse Clips. Fasteners : Cotter Pins,Heavy duty ,Lock Washers. Industrial : Cold Headed Parts,Thrust Bearings,Doctor Blades,Paper Industry,Bourdon Tubing,Well Drill Equipment,Perforated Sheets . |
Phosphorus Bronze Strips
Properties
| Density | 8.8 | g/cm3 |
| Thermal expansion coefficient - 191..16 | 18 | 10-6/K |
| 0..300°C | 18.7 | 10-6/K |
| Specific heat capacity | 0.377 | J/(g·K) |
| Thermal Conductivity | 67 | W/(m·K) |
| Electrical Conductivity (1 MS/m = 1 m/(O mm²) | ≥ 65 | MS/m |
| Electrical Conductivity (IACS) | ≥ 11 | % |
| Thermal coefficient of electrical resistance (0 .. 200 C) | 0.65 | 10-3/K |
| Modulus of elasticity (1 Gpa = 1 kN/mm²) cold formed | 109 | Gpa |
| 115 | Gpa |
| Temper | Tensile Strength | Yield Strength | Elongation Minimum | Hardness HV |
| Rm | Rp0.2 | A50mm | ||
| MPa(N/mm2) | MPa(N/mm2) | % | ||
| O (Soft) | 345 Min | ≤ 300 | 50 Min | 100 Max |
| HA (Quater Hard) | 405 Min | ≥ 350 | 40 Min | 125 Min |
| HB (Half Hard) | 475 Min | ≥ 400 | 15 Min | 175 Min |
| HD (Hard) | 585 Min | ≥ 500 | 5 Min | 200 Min |
| HE (Extra Hard) | 670 Min | ≥ 600 | 2 Min | 220 Min |
| HS (Spring Hard) | 720 Min | ≥ 700 | 240 Min |
