What is a cold extrusion kovar alloy processing?

What is a cold extrusion kovar alloy processing?

KOVAR alloy is an iron-nickel-cobalt alloy with a density of 8.36 g / cm3 and a coefficient of linear expansion equal to that of glass and ceramics with a temperature of 20-500 °C.

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COMPANY CULTURES: VISION:We aim to become a global high-end precision hardware cold extrusion service provider and can continue to contribute unique value, worthy of long-term trust as partners in China. MISSION:We focus on and deeply cultivate the precision cold extrusion field to solve the difficulties and pain points of the industry and customers as our mission. Also we continue to innovate, join the global high-end manufacturing industry chains, and promote high-quality "Made in China" hardware to the world VALUES: *Quality first *supreme service *honest and pragmatic *customer satisfaction

We focus on the leader in precision cold extrusion process and solutions to reduce manufacturing costs

STANDARD METAL, we are professional solutions provider who focus on hardware consecutive precision cold extrusion technology to solve the industry problems of high cost, low efficiency, difficult processing of high-tech hardware manufacturing.

Technical Features Advantages

Technical Features: 1). High precision molding, fast speed, parts tolerance can be tested within +/ -0.02mm. 2). One time molding without other supporting process. 3). Truly optimize the cost, applicable to Invar, Kovar, copper, iron, nickel, aluminum, stainless steel and other raw materials which are malleable under HV220 hardness degrees can be completed into extrusion molding. STD really solves the angle collapse problems in cold pier and stamping process

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STANDARD METAL has a number of independent intellectual property rights included 12 domestic and international invention patents.

We mainly focus on optical communication, car automotive sensors, industrial automation, precision medical equipments, aviation industrial automatic control hardware, military packaging hardware, consumer electronics hardware and other applications. STD is using high-technology, unique innovation and modern process management to provide highly competitive products and offer professional services to meet customer needs.

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Definition of Cold Extrusion Kovar Alloy Processing

Kovar is a nickel–cobalt ferrous alloy compositionally identical to Fernico 1, designed to be compatible with the thermal expansion characteristics of borosilicate glass in order to allow direct mechanical connections over a range of temperatures. It finds application in electroplated conductors entering glass envelopes of electronic parts such as vacuum tubes, X-ray and microwave tubes and some lightbulbs. The name Kovar is often used as a general term for Fe–Ni alloys with these particular thermal expansion properties. Note the related particular Fe–Ni alloy Invar which exhibits minimum thermal expansion.

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The product is miniature, the size of 1 cubic millimeter hardware structure can be produced.


Good reputation! Fine workmanship in line with buyer's specifications, delivery on time.


High precision of products, tolerance ±0.02mm can be guaranteed.


Fast delivery speed, daily output of more than 200,000P.

Frequently Asked Question

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Since Kovar Alloy is tough and versatile, while employing extensive quality controls throughout UNS K94610 alloy’s manufacturing process to ensure uniform physical and mechanical properties for ease in deep drawing, stamping and machining are consistently achieved.

If we take for example a traditional tube light which is commonplace in many workplaces we can then look at how Kovar works in real life situations. We all know from accidentally touching a tube lightbulb that the glass can become extremely hot very quickly. Creating the required lighting using electricity creates immense heat which very quickly transfers to the glass.

Whereas Invar is designed to have a very low coefficient of thermal expansion (CTE) and is thus “in-variant” to temperature, Kovar is designed to be “covariant”. It was designed so that its CTE closely matched that of borosilicate glasses but it is a good match for some alumina ceramics as well

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