Overview
Utilizing its expertise in copper alloy wire processing, Fisk Alloy has been able to improve the conductivity of C70250 to 55% IACS (a 35% increase) while still maintaining a high tensile strength and good formability. Available in sizes of .0159″ and smaller, the alloy is able to achieve a minimum tensile strength of around 110 ksi, with fine wire sizes (.009″ or smaller) achieving a strength of 120 – 145 ksi.
Physical Properties
| Density | 0.318 lb/in³ |
| Electrical Resistivity (Annealed) | 18.9 Ω·cir-mil/ft @ 68 °F |
| Electrical Conductivity (Age Hardened) | 55% IACS @ 68 °F |
| Thermal Conductivity | 98 Btu/ft²/ft·hr/°F @ 68 °F |
| Modulus of Elasticity (Tension) | 19 ksi |
| Melting Point (Solidus) | 1,700 °F |
| Melting Point (Liquidus) | 1,900 °F |
| Density | 8.8 gm/cm³ |
| Electrical Resistivity (Annealed) | 13.3 µΩ·cm @ 20 °C |
| Electrical Conductivity (Age Hardened) | 0.31 MS·cm @ 20 °C |
| Thermal Conductivity | 170 W/m·K @ 20 °C |
| Modulus of Elasticity (Tension) | 131 Mpa |
| Melting Point (Solidus) | 927 °C |
| Melting Point (Liquidus) | 1,038 °C |
Round Wire - Variable
| TEMPER NAME | TEMPER CODE | TENSILE STRENGTH (ksi) |
MILL LIMITS (inch) |
|
| Min | Max | |||
| TL | TL | 110 | Over .009" - .0159" | |
| TL | TL | 120 | 145 | .009" & under |
| TEMPER NAME | TEMPER CODE | TENSILE STRENGTH (Mpa) |
MILL LIMITS (mm) |
|
| Min | Max | |||
| TL | TL | 750 | over 0.230mm to .040mm | |
| TL | TL | 820 | 1,000 | 0.230mm & under |
