Invar 42® (alloy 42, Nilo 42®) / 1.3917 / UNS K94100
Invar 42® is a nickel-iron alloy that contains 41% nickel and exhibits excellent controlled expansion qualities and is used primarily for controlled expansion and magnetic applications. Invar 42® is also highly effective in magnetic applications. It can be hot formed, cold formed or machined. Nilo 42 possesses many of the qualities of the other Invar nickel iron alloys. It is effective in extreme temperatures ranging from -32C to 275C.
Material Data Sheet
| ASTM | F30 |
|---|---|
| UNS | K94100 |
Main fields of application
Invar 42 is used mainly in:
Transformer & capacitor bushings
Automotive & industrial lamps
Electronic tubes
Glass-to-metal applications
Ceramic-to-metal Applications
Chemical composition of Invar 42
| Ni | Fe |
|---|---|
| 42 | Balance |
Mechanical properties of Invar 42
| Metallurgical Condition | Annealed, Descaled | |
|---|---|---|
| Yield Strength | KSI (MPa) 36 | (248) |
| Tensile Strength | KSI (MPa) 71 | (490) |
| Hardness | HB | 130 |
| Elongation | 50mm | >40 |