Length tolerance +/- 2mm

Do you need other steel quality or dimensions? Please write to us. Our sales team makes an offer from stock program or delivery program :)

• Production time - none. Already in stock.
• Shipping preparation - 2-3 working days.
• Delivery time - depending on the parcel service. Look at the faq please.

Kovar is a nickel alloy, which is composed of approx. 54% iron, 29% nickel and 17% cobalt. The material is characterized by a low coefficient of thermal expansion of approx. 5 ppm / K and excellent toughness. The material has good physical and mechanical properties and can be processed by deep drawing and punching. It is not corrosion-resistant in damp and wet environments and must be coated with an additional corrosion-resistant protective layer. 1.3981 has a tensile strength of 530 N / mm² and cannot be magnetized. The quality is easy to solder with solder.

1.3981 is available in the Evek GmbH online shop. We are a reliable supplier for nickel alloys and ship internationally. Talk to us and we will help you with your request.

Since Kovar enables a connection between glass and metal, it is mainly used for metal-to-glass penetrations. The material is also used in the field of microelectronics and microsystem technology as a housing material. Further fields of application of 1.3981 are:

• X-ray tubes;
• Electronics (transistors and diodes);
• various hermetic seals;
• Chemistry (vacuum systems).

The following features distinguish Kovar:

• extremely low coefficient of thermal expansion;
• excellent toughness;
• good physical and mechanical properties;
• can be deep drawn and punched;
• not corrosion resistant;
• easily solderable with tin solder;
• not magnetizable.

Buy 1.3981 from Evek GmbH. Our prices for nickel alloys will surprise you positively. If you have not found the product you are looking for, we will be happy to make you an offer on request.