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(submitted by the website administration)
| Cast copper alloy C82700 (Beryllium Copper) | ||||
| Chemical composition: Be=2.45%, Ni=1.25%, Cu = 96.3% | ||||
| Property | Value in metric unit | Value in US unit | ||
| Density | 8.08 *10³ | kg/m³ | 504 | lb/ft³ |
|---|---|---|---|---|
| Modulus of elasticity | 132 | GPa | 19100 | ksi |
| Thermal expansion (20 ºC) | 16.9*10-6 | ºCˉ¹ | 9.4*10-6 | in/(in* ºF) |
| Specific heat capacity | 419 | J/(kg*K) | 0.10 | BTU/(lb*ºF) |
| Thermal conductivity | 129.8 | W/(m*K) | 900 | BTU*in/(hr*ft²*ºF) |
| Electric resistivity | 8.7*10-8 | Ohm*m | 8.7*10-6 | Ohm*cm |
| Tensile strength ( sand cast, solution treated and aged) | 1069 | MPa | 155000 | psi |
| Yield strength (sand cast, solution treated and aged) | 896 | MPa | 130000 | psi |
| Elongation (sand cast, solution treated and aged) | 2 | % | 2 | % |
| Hardness (sand cast, solution treated and aged) | 39 | RC | 39 | RC |
| Solution temperature | 790 | ºC | 1454 | ºF |
| Aging temperature | 325 | ºC | 617 | ºF |
| Aging time | 1-2 | hrs. | 1-2 | hrs. |
| Liquidus temperature | 954 | ºC | 1750 | ºF |
| Solidus temperature | 857 | ºC | 1575 | ºF |