Kovar® Tube, Wire and Custom Blanks — 1.3981

29NK / Kovar ® — UNS K94610

Trade name: Kovar ®. It is a brand of iron-nickel-cobalt alloy. It serves to create a hermetic seal of ceramic materials and glass. Kovar used in the power tubes, microwave devices, diodes and transistors, and others. Radio-electronic devices.

Physical indicators

Alloy Kovar 29NK	Hardness HB MPa x10 -1	The relative strength of the current
annealed	85	85 000 min
¼ hard	90 — 93	90 000 — 115 000
½ hard	94 — 96	105 000 — 125 000
Hard	Over 96	120,000 max

Kovar presented: sheets, strips, plates, round, wire, seamless and welded pipes, forgings, fittings and flanges.

Kovar. Chemical composition:

C	Mn	P	S	Si	Cr	Ni	Mo	Cu	Co	Cb	Ti	Al	Fe	N	AT
0.03 max	2.0 max	0.04 max	0.03 max	1.0 max	20.0 -22.0	23,5−25,5	6−7	0.75 max					balance	0,18−0,25

Kovar tube, wire and blank enquiries

Evek LLC handles requests for Kovar tube, pipe, wire, round bar and custom blanks for U.S. customers. Send the required standard or grade, product form, dimensions, condition, tolerance, quantity and any drawing or inspection requirements.

Request a Kovar quote

Include the delivery ZIP code so we can confirm availability, price and delivery conditions. Typical delivery across the United States is 2–3 weeks, subject to order specifications.

Related Kovar product forms

For flat products, see Kovar sheet, strip and ribbon. For long products, see Kovar wire, round bar and rod.