Ni29co18/ Uns K94610 (4J29) Kovar Expansion Precision Alloy Pipe / Tube

1.Description:

4J29(China); 29H, 29H-B, Techallony(Russia); Kovar, Rodar, Glasseal 29-17(United States); Nilo K, Telcaseal(Great Britain); KV-1, KV-2, KV-3(Japan); Dilver P0, Dilver P1(France); Vacon 12, Silvar 48(Germany).

4J29 expansion alloy, also known as Kovar alloy, is a Nickel Iron alloy with 29% Nickel, 17% Cobalt and the remaining balance is Iron. The expansion characteristics of Kovar match both borosilicate (or Pyrex) glasses and alumina ceramics, making it one of the most popular controlled expansion alloys for hermetic sealing applications. Kovar is produced to ensure good properties for machining and deep drawing, and is a porosity free product. You'll find Kovar in applications such as power tubes, microwave tubes, transistors, diodes, hybrid packages, and other kinds of scientific instruments.


2. Chemical composition(%):

3. Physical properties

4. Mechnical properties:

5.Application:

The alloy is widely used as glass sealing for electronic vacuum devices, such as launching tube, oscillating tube, ignitron, magnetron, transistor, sealing plug, relay, leading wire of integrated circuit, chassis, shell, scaffold and so on.

6.size:

Kovar tubes / Pipes: Φ1.0~80×0.02~20mm


7.Advantages:

1.Pass: ISO9001 certification
2.fine after-sale services
3.small order accepted
4.samples available
5.short delivery time

Shanghai Tankii Alloy Material Co., Ltd.specialized in production of Resistance Heating Alloy, Nickel Chromium Alloy, Iron Chromium Aluminum Alloy, Nickel Aluminum Alloy, Manganin, Copper Nickel Alloy, thermocouple wire, pure nickel and other precision alloy materials in the form of round wire, ribbon wire, sheet, tape, strip, rod and plate.

We’ve already got ISO9001 quality system certificate and approval of ISO14001 environmental protection system.

We own a complete set of advanced production flow of refining, cold reduction, drawing and heat treating etc. We also proudly have independent R&D capacity.

Shanghai Tankii Alloy Material Co., Ltd has accumulated lots of experiences over forty years in this field. During forty years, hundreds of management elites and high science and technology talents were employed.They participated in every walk of the company life, which make our company keep blooming and invincible in the competitive market.

Based on the principle of “first quality, sincere service”, our managing ideology is pursuing technology innovation and creating the top brand in the alloy field. We persist in Quality - the foundation of the survival. It is our forever ideology to serve you with full heart and soul. We committed to provide customers all over the world with high-quality, competitive products and perfect service.

Our products, such us nichrome wire, nichrome strip, fecral wire, fecral strip, thermocouple wire, nickel wire, nickel strip have been exported to Europe, USA, India, Southest Asia, South America,etc.

We are willing to establish strong and long-time partnership with our customers

• Most complete range of products dedicated to Resistance, Thermocouple and Furnace manufacturers
• Quality with end to end production control
• Technical support and Customer Service