CuSn5
Standard designation
EN CW451K/UNS C51000
| Chemical composition | |
|---|---|
| Cu | Rest |
| Sn [%] | 5 |
| P [%] | 0.1 |
Description/applications
CuSn5 is one of the copper-tin alloys. CuSn5 is predominantly used where a high-strength bronze is combined with good electrical conductivity. Applications: connectors, contact pins, switching elements, parts for machine and equipment engineering
| Physical properties¹ | |
|---|---|
| Density | 8.85 g/cm³ |
| Electrical conductivity | 10 m/Ω·mm² 17.2 % IACS² |
| Thermal conductivity | 82 W/m·K |
| Thermal expansion coefficient | 18.2·10-6/K |
| E modulus | 118 GPa |
| ¹Approximate values in soft state, measured at ambient temperature ² IACS = International Annealed Copper Standard |
|
| Processing information | |
|---|---|
| Weldability | good |
| Solderability | very good |
| Stress crack corrosion | None |
| Mechanical properties | |||||
|---|---|---|---|---|---|
| State | Tensile strength Rm [MPa] | Yield strength Rp0.2 [MPa] | Elongation A50 [%] |
Hardness HV |
|
| R310/H75 | 310-390 | max. 250 | min. 45 | 75-105 | |
| R400/H120 | 400-500 | min. 240 | min. 14 | 120-160 | |
| R490/H160 | 490-580 | min. 430 | min. 8 | 160-190 | |
| R550/H180 | 550-640 | min. 510 | min. 4 | 180-210 | |
| R630/H200 | 630-720 | min. 600 | min. 2 | 200-230 | |
| R690/H220 | min. 690 | min. 670 | - | min. 220 |