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NiCo29−18 alloy, Kovar, Nilo


Grade analogue W. Nr. Aisi Uns En Order
29NK 1.3981 K94610 NiCo29-18 Buy from stock, view availability
29NK-t 1.3981 K94610 NiCo29-18 Buy from stock, view availability
29NK-m 1.3981 K94610 NiCo29-18 Buy from stock, view availability

Technical characteristics

Magnetic alloys «Kovar», «Nilo» consists of iron (52−54%), nickel (29%), cobalt (the rest). A presence of cobalt in composition (17−18%) considerably increases cost of a material. 29NK has next to nothing coefficient of linear expansion, a conductance is three times as high as a conductance of invar. There are manufactured the condensers with a small TKE and variable capacity out of kovar. Alloy corrodes in humid conditions, thereby appears a necessity in protection cover. At a manufacturing of condensers, it is covered with a metal of a high conductance (generally, it is silver). Soldered in a glass wire, forms a reliable hermetic joint. It is used in current lead structures and bases of vacuum-tube devices.

Percentage composition of «Kovar», «Nilo» GOST 10994−74

P S C Cr Ti Al Cu Si Mn Ni Co Fe
≤0.015 ≤0.015 ≤0,03 ≤0,1 ≤0,1 ≤0,2 ≤0,2 ≤0,3 ≤0,4 29 17−18


A quality is guaranteed by rigorous technology compliance of manufacture. All products are certificated. Our managers are always ready to lend a knowledgeable assistance. A large assortment will not leave you without a choice. Connect us in a convenient way to you. Phone numbers, e-mail addresses of the closest company’s office are located in section «Contacts». Order a service «Call-back» and our manager will help you to choose products that will fit your individual requirements.


Manufacture of various components of radio-electronic devices. Magnetic precision alloys «Kovar», «Nilo» have a low index of heat expansion (at a range of 20 — 400°C) and a high heat resistance (19V/m°С,). It forms a very consistent and hermetic joint, positioning it as an indispensable material in manufacturing electro-vacuum devices.

Such an alloy (containing iron in its basis) corrodes in conditions of a high humidity. That is why it requires a special protective cover. Automatic arc welding is manufactured with a help of welding wire of grade 04H20N10G2B that consists of anti-corrosive steel. It is often used at a high humidity for welding metallic structures in nuclear and power engineering industries.

Physical characteristics of «Kovar», «Nilo» alloys

Degree 1/Deg kg/m3 J/(kg/deg) V/(m/deg) MPa Ohm-m
20 10.7 8.2 - - 1.45


Kovar, Nilo supplier

«Auremo» supplier offers to buy Kovar, Nilo by wholesale. There is a wide range of half-finished goods in stock. Here you can find an affordable Kovar, Nilo price from a supplier. Buy precision alloys right now! Kovar, Nilo price is privileged for wholesale customers.

Buy at a bargain price

«Auremo» company effects precision, rare refractory metals on favorable terms. A price is conditioned by technological details of production without including additional expenses. A wide range of goods for scaled-up fabrications is in stock. On company’s web-site, you can find a price-list, a catalog of production and all the information about it. A price for precision alloys depends on order quantity and additional conditions of supply. You can easily find us through the Internet. «Auremo» company offers to buy Kovar, Nilo. Kovar, Nilo price is privileged for wholesale and regular buyers. «Auremo» company is a profitable Kovar, Nilo supplier. Buy Kovar, Nilo right now! Here you can find an affordable price from Kovar, Nilo a supplier. We are waiting for your orders.