Kovar Wire
Ken-tron draws Kovar metal wire (ASTM F-15) to a variety of diameters. Our customers use Kovar Ken-tron metal wire for applications in the aerospace, automotive, defense, electronics, and telecommunications industries. Glass to metal seal and glass to ceramic seal are also common uses of this Ken-tron controlled expansion wire.
Kovar alloy wire is a nickel iron alloy suitable for glass and ceramic sealing to metal. It is commonly used in lead wire for mercury switches and in semiconductor devices. Material compliant to SAE AMS I23011 Class 1 and ASTM F-15.
Chemical Composition
| ASTM F15 – 04 | |
|---|---|
| Iron | 53.0 Nominal |
| Nickel | 29.0 Nominal |
| Cobalt | 17.0 Nominal |
| Manganese | .50 Max |
| Silicon | .20 Max |
| Carbon | .04 Max |
| Aluminum | .10 Max |
| Magnesium | .10 Max |
| Zirconium | .10 Max |
| Titanium | .10 Max |
| Copper | .20 Max |
| Chromium | .20 Max |
| Molybdenum | .20 Max |
| SAE AMS I23011 Class I | |
|---|---|
| Temper | PSI Range |
| Annealed | 85,000 Maximum |
| 1/4 Hard | 90,000 – 105,000 |
| 1/2 Hard | 105,000 – 125,000 |
| Hard | 120,000 Minimum |
Temperature Coefficient Of Thermal Expansion
Cm per cm per °C x 10 minus 6
| 30 – 400 °C | 4.6 – 5.2 |
| 30 – 450 °C | 5.1 – 5.5 |
Other Properties
| Density (lbs/in3) | .302 |
| Melting Point (°F) | 2640 |
| Electrical Resistivity | 294 ohm-cir mil/ft |
The Ken-tron Wire Division specializes in small diameter close tolerance wire made to customer specifications. Ken-Tron manufactures to your custom specifications.
For additional Inquiries, please request a quote or contact us.
Click here for a full color parts brochure (1.31 MB) in PDF format.
