C51000 is a tin phosphorus bronze with a tin content of about 5.0%. This alloy has high elasticity, strength, wear resistance, high temperature resistance, stress relaxation resistance, and corrosion resistance. It can be used to manufacture new energy vehicle connectors, wiring terminals, stamping parts, elastic connectors, etc.
| Grade | Chemical composition（%） | |||||||
| GB | ASTM | DIN | Cu | Fe | Pb | Sn | P | Zn |
| Qsn5-0.2 | C51000 | CuSn5 | Balance | ＜0.1 | ＜0.05 | 4.2-5.8 | 0.03-0.35 | ＜0.3 |
| Physical properties | |||||
| Density (g/cm³) |
Modulus of elasticity (GPa) |
Thermal expansion coefficient (×10-6/K) |
Electrical conductivity (%IACS) |
Thermal conductivity (W/(m·K)) |
|
| 8.86 | 115 | 17.2 | 17 | 81 | |
| Mechanical properties | Bend properties | |||||
| Temper | Hardness HV |
Tension test | 90°R/T（Thick≤0.5mm） | |||
| Tensile Strength Rm/MPa |
Yield Strength MPa |
Elongation % |
Good way | Bad way | ||
| O60 | 80-120 | ≥305 | - | ≥45 | 0 | 0 |
| H01 | 90-160 | 370-470 | - | ≥30 | 0 | 0.5 |
| H02 | 130-190 | 470-570 | 400-500 | ≥18 | 0.5 | 1 |
| H04 | 170-220 | 570-665 | 500-630 | ≥10 | 1 | 2 |
| H06 | 190-230 | 620-710 | 570-680 | ≥7 | 1 | 3 |
| H08 | ≥200 | ≥660 | ≥630 | ≥5 | - | - |
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