Nilo® Alloy 42 / Invar® 42

Nilo® Alloy 42 / Invar® 42 / 1.3917 / UNS K94100

Nilo® Alloy 42, also known as Invar® 42, is a nickel-iron alloy with a nickel content of approximately 42%. The alloy is specifically developed for applications where a low and stable thermal expansion coefficient is required, particularly at room temperature up to about 300°C.

Thanks to these properties, Nilo® 42 is widely used in applications where precise control of thermal expansion is essential, such as in electronics and sealing technology.

Applications of Nilo® Alloy 42 / Invar® 42

Nilo® Alloy 42 is widely used in the electronics and lighting industries. Some typical applications include:

Semiconductors
Bimetal thermostat strips and rods
Ceramic-to-metal seals with aluminum oxide ceramics
Seals in glass-to-metal connections, such as:
- Copper-clad wire cores
- Glass tubes of electric lamps
- Cathode ray tubes
- Fluorescent lamps

The reliable performance of Nilo® 42 under temperature fluctuations makes it an indispensable alloy in precision applications and high-quality sealing technology.

Nilo® Alloy 42 is the ultimate solution for applications requiring controlled thermal expansion and compatibility with glass or ceramics.

Properties of Nilo® Alloy 42 / Invar® 42

Nilo® Alloy 42 offers a nominal, nearly constant coefficient of thermal expansion over a wide temperature range. This makes it ideal for situations where different materials are combined, such as with ceramics or glass, and where thermal stresses need to be minimized.

The alloy has good workability and can be welded, soldered, and processed into fine components. Nilo® 42 is particularly suitable for applications requiring tight tolerances under varying temperatures, thanks to its structural stability.

Due to its compatibility with materials such as aluminum oxide and various types of glass, Nilo® 42 is a preferred material for sealing and bonding techniques in electronics and lighting.

Our Nickel Products