Overview
C18150 is a copper chromium zirconium alloy with high electrical conductivity, moderate strength, and excellent softening resistance. Due to its softening resistance, the alloy has been widely used for resistance welding electrodes and soldering gun tips. Its combination of high electrical conductivity, strength and softening resistance makes C18150 an ideal choice for electrical and electronic connectors, especially for compliant pin applications.
Physical Properties
| Annealing Range (Min) | 1800 °F |
| Annealing Range (Max) | 1850 °F |
| Density | 0.321 lb/in³ |
| Electrical Resistivity (Annealed) | 13 Ω·cir-mil/ft @ 68 °F |
| Electrical Conductivity (Annealed) | 80% IACS @ 68 °F |
| Thermal Conductivity | 187 Btu/ft²/ft·hr/°F @ 68 °F |
| Coefficient of Thermal Expansion | 9.5 per °F (68-572 °F) |
| Modulus of Elasticity (Tension) | 17 ksi |
| Melting Point (Solidus) | 1,750 °F |
| Melting Point (Liquidus) | 1,920 °F |
| Annealing Range (Min) | 982 °C |
| Annealing Range (Max) | 1010 °C |
| Density | 8.94 gm/cm³ |
| Electrical Resistivity (Annealed) | 2.16 µΩ·cm @ 20 °C |
| Electrical Conductivity (Annealed) | 0.47 MS·cm @ 20 °C |
| Thermal Conductivity | 324 W/m·K @ 20 °C |
| Coefficient of Thermal Expansion | 17.1 per °C (20-300 °C) |
| Modulus of Elasticity (Tension) | 117 Mpa |
| Melting Point (Solidus) | 954 °C |
| Melting Point (Liquidus) | 1,049 °C |
Round Wire - Pretempered
| TEMPER NAME | TEMPER CODE | TENSILE STRENGTH (ksi) |
|
| Min | Max | ||
| AT | TF00 | 65.0 | 80.0 |
| AT | TL00 | 70.0 | 85.0 |
| 1/4 AT | TL00 | 75.0 | 90.0 |
| 1/2 AT | TL02 | 80.0 | 95.0 |
| Hard AT | TL04 | 85.0 | 100 |
| Spring AT | TL08 | 90.0 | 105 |
| Extra Spring AT | TL10 | 100 | |
| TEMPER NAME | TEMPER CODE | TENSILE STRENGTH (Mpa) |
|
| Min | Max | ||
| AT | TF00 | 440 | 560 |
| AT | TL00 | 480 | 590 |
| 1/4 AT | TL00 | 510 | 630 |
| 1/2 AT | TL02 | 550 | 630 |
| Hard AT | TL04 | 580 | 690 |
| Spring AT | TL08 | 620 | 730 |
| Extra Spring AT | TL10 | 680 | |
