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Home > Metallurgy, Mineral & Energy > Non-ferrous Metal & Products > Nickel > Offer Kovar Alloy Strip in Stock With ASTM F-15, NILO K, Pernifer 2918, Rodar, Dilvar P1

Offer Kovar Alloy Strip in Stock With ASTM F-15, NILO K, Pernifer 2918, Rodar, Dilvar P1

Name: Offer Kovar Alloy Strip in Stock With ASTM F-15, NILO K, Pernifer 2918, Rodar, Dilvar P1
Brand: XAGY
SKU: 100983011
Availability: InStock

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US$ 26 - 34 MOQ: 50 Kilograms

Key Specifications

Get Latest Price

Place of Origin:

Shaanxi, China

Type:

Nickel Bar

Application:

power tubes, microwave tubes, transistors, diodes, hybrid packages,

Contact Supplier Request Quote Chat Now

Xi'an Gangyan Special Alloy Co., Ltd.

Payment & Shipping

Payment Methods:

Port of Shipment:

All port in China

Delivery Detail:

Delivery time depends on order quantity.

Product Details
Company Profile
Contact Us

Place of Origin Shaanxi, China

Type Nickel Bar

Application power tubes, microwave tubes, transistors, diodes, hybrid packages,

Grade FeNi28Co18 controlled expansion alloy kovar

Ni (Min) 28.5%

Powder Or Not Not Powder

Model Number 4j29 kovar strip

Brand Name XAGY

Product Description

Glass sealed and controlled expansion Kovar alloys

* kovar alloy, ASTM F15, Nilo-K, UNS K94610 (FeNi29Co17), Chinese 4J29

*Specifications:ASTM F15; DIN 17745; S.E.W. 385; Werkstoff Nr. 1.3981; AFNOR NF A54-301

Kovar Alloy, also know as ASTM F-15, NILO K, Pernifer 2918, Rodar, and Dilvar P1

is Nickel-Iron-Cobalt, controlled expansion alloy containing 29% Nickel. It’s coefficient of expansion

(which decreases with rising temperature to the inflection point), matches the expansion rate of borosilicate glasses

and aluminia ceramics. Applications include glass to metal seals in applications requiring high reliability or resistance

to thermal shock, ie. high~power transmitting valves, transistor leads and heaters and photography flash bulbs.

Physical Property

Table 2 Coefficient of Linear Expansion

Grade

Heat Treatment of the Samples

Average Coefficient of Linear Expansion

20~300℃

20~400℃

20~450°C

4J29

Kovar

Heat to temperature of 900±20℃ in the hydrogen, hold for 1h; re-heat to 1100±20℃, hold for 15 min.; cooled to 200℃ at a rate less than 5℃/min

4.6~5.2

5.1~5.5

Table 3 Typical Coefficient of Linear Expansion

Grade

Average Coefficient of Linear Expansion

20~200℃

20~300℃

20~400℃

20~450℃

20~500℃

20~600℃

20~700℃

20~800℃

4J29

Kovar

5.9

5.3

5.1

5.3

6.2

7.8

9.2

10.2

Chemical compostion

Table 1 Grade & Chemical Composition

Grade	Chemical Composition (%)
Grade	C	P	S	Mn	Si	Cu	Cr	Mo	Ni	Co	Fe
4J29 Kovar	≤
4J29 Kovar	0.03	0.020	0.020	0.5	0.30	0.20	0.20	0.20	28.5~29.5	16.8~17.8	Bal.

Grade

Similar Grades just for customers’ reference

Russia	U.S.A.	U.K.	France	Germany
29HK	Kovar	Nilo K	Dilver P0	Vacon 12

Application

Kovar Application

Kovar alloy has been used for making hermetic seals with the harder Pyrex glasses and ceramic materials.

This alloy has found wide application in power tubes, microwave tubes, transistors and diodes. In intergrated circuits,

it has been used for the flat pack and the dual-in-line package.

Kovar Shapes

Sheet/Plate, Bar/Rod/Wire/Coil,Capillary/Pipe/Tube

Note: We could do any other products with specified technical standard, say, ASTM,SAE,DIN,S.E.W.,JIS,ISO,

IEC,NF,BS. PLS contact us for more information:Tel: +86-29-33669103 or e-mail us at: webmaster AT

Customization

Factory Show

Xi'an GangYan Special Alloy Co,Ltd. The factory is researching and producing precision alloy over 23 years , Worldwide Supply and 10000+ clients witness for you .
Our factory is located in Shaaxi Province of China. Our products are all made to satisfy the requirements

of the European Union SGS -- RoHs, ISO 9001 and we have both certification. Our advantages lie in strong research-and-development capabilities, abundant materials, highly cost performance, and relevant relations with the factories from all over the world. Also we can satisfy your unique requirements with ASTM, UNS, GOST, standards, For any Further INFO please feel free to contact us:webmaster@; Skype:tianlulicheng2.