CuSn6
Standard Designation
EN CW452K / UNS 51900
| Chemical Composition | |
|---|---|
| Cu [%] | Balance |
| Sn [%] | 6 |
| 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 | 8.8 g/cm³ |
| Electrical conductivity | 9 m/Ω·mm² 15.5 % IACS² |
| Thermal conductivity | 75 W/m·K |
| Thermal expansion coefficient | 18.5·10-6/K |
| Modulus of elasticity | 115 GPa³ |
| 1) Guideline values for soft temper, measured at room temperature 2) IACS = International Annealed Copper Standard 3) 1 GPa = 1 kN/mm² |
|
| Processing information | |
|---|---|
| Weldability | good |
| Solderability | very good |
| Stress corrosion cracking | none |
| Mechanical properties | ||||
|---|---|---|---|---|
| Temper | Tensile Strength Rm [MPa] | Yield Strength Rp0,2 [MPa] | Elongation A50 [%] | Hardness HV |
| R350/H80 | 350 - 420 | max. 300 | min. 45 | 90 - 120 |
| R420/H125 | 420 - 520 | min. 260 | min. 17 | 125 - 165 |
| R500/H160 | 500 - 590 | min. 450 | min. 8 | 160 - 190 |
| R560/H180 | 560 - 650 | min. 500 | min. 5 | 180 - 210 |
| R640/H200 | 640 - 730 | min. 600 | min. 3 | 200 - 230 |
| R720/H220 | min. 720 | min. 690 | - | min. 220 |