JINXING MATECH CO LTD
| Payment Terms | L/C, T/T |
| Supply Ability | 3000T |
| Delivery Time | 35days |
| Packaging Details | Standard wooden case |
| Product Type | Reliable Quality Kovar Expansion Alloy Sheet Engrave |
| Material | Feni Alloy |
| Carbon Content | low |
| Transport Package | wooden case |
| Shape | round bar |
| Condition | soft |
| Surface | Bright |
| Origin | China |
| Brand Name | JX |
| Model Number | Reliable Quality Kovar Expansion Alloy Sheet Engrave |
| Certification | ISO |
| Place of Origin | china |
View Detail Information
Explore similar products
Invar 36 bar UNSK93600 ASTM F1684 Nilo 36 wire low expansion coefficients
Hastelloy C2000 Tube ASTM B622 Seamless Tube Big Out Diameter 450mm
Invar 32 Foil, Super Invar 32-5 UNS K93500 Low Expansion Alloys
Hastelloy G30 Pipe / UNS N06030 / DIN W. Nr. 2.4603 ASTM B622
Product Specification
| Payment Terms | L/C, T/T | Supply Ability | 3000T |
| Delivery Time | 35days | Packaging Details | Standard wooden case |
| Product Type | Reliable Quality Kovar Expansion Alloy Sheet Engrave | Material | Feni Alloy |
| Carbon Content | low | Transport Package | wooden case |
| Shape | round bar | Condition | soft |
| Surface | Bright | Origin | China |
| Brand Name | JX | Model Number | Reliable Quality Kovar Expansion Alloy Sheet Engrave |
| Certification | ISO | Place of Origin | china |
| High Light | Kovar Expansion Alloy Sheet ，Engrave Feni Alloy Sheet ，1/4 Hard Feni Alloy Sheet | ||
Kovar Sheet not only has thermal expansion similar to glass, but its nonlinear thermal expansion curve can often be made to match a glass, thus allowing the joint to tolerate a wide temperature range. Chemically, it bonds to glass via the intermediate oxide layer of nickel oxide and cobalt oxide; the proportion of iron oxide is low due to its reduction with cobalt. The bond strength is highly dependent on the oxide layer thickness and character. The presence of cobalt makes the oxide layer easier to melt and dissolve in the molten glass. A grey, grey-blue or grey-brown color indicates a good seal. A metallic color indicates lack of oxide, while black color indicates overly oxidized metal, in both cases leading to a weak joint.
Mainly used in electric vacuum components and emission control, shock tube, igniting tube, glass magnetron, transistors, seal plug, relay, integrated circuits lead, chassis, brackets and other housing sealing.
Kovar Sheet Normal composition%
| Ni | 28.5~29.5 | Fe | Bal. | Co | 16.8~17.8 | Si | ≤0.3 |
| Mo | ≤0.2 | Cu | ≤0.2 | Cr | ≤0.2 | Mn | ≤0.5 |
| C | ≤0.03 | P | ≤0.02 | S | ≤0.02 |
| Code of condition | Condition | Wire | Strip |
| R | Soft | ≤585 | ≤570 |
| 1/4I | 1/4 Hard | 585~725 | 520~630 |
| 1/2I | 1/2 Hard | 655~795 | 590~700 |
| 3/4I | 3/4 Hard | 725~860 | 600~770 |
| I | Hard | ≥850 | ≥700 |
| Density (g/cm3) | 8.2 |
| Electrical resistivity at 20ºC(Om*mm2/m) | 0.48 |
| Temperature factor of resistivity(20ºC~100ºC)X10-5/ºC | 3.7~3.9 |
| Curie point Tc/ ºC | 430 |
| Elastic Modulus, E/ Gpa | 138 |
Kovar Expansion Alloy Sheet Picture:
Coefficient of expansion
| θ/ºC | α1/10-6ºC-1 | θ/ºC | α1/10-6ºC-1 |
| 20~60 | 7.8 | 20~500 | 6.2 |
| 20~100 | 6.4 | 20~550 | 7.1 |
| 20~200 | 5.9 | 20~600 | 7.8 |
| 20~300 | 5.3 | 20~700 | 9.2 |
| 20~400 | 5.1 | 20~800 | 10.2 |
| 20~450 | 5.3 | 20~900 | 11.4 |
| θ/ºC | 100 | 200 | 300 | 400 | 500 |
| λ/ W/(m*ºC) | 20.6 | 21.5 | 22.7 | 23.7 | 25.4 |
Company Details
Business Type:
Manufacturer,Distributor/Wholesaler,Importer,Exporter,Seller,Other
Year Established:
2007
Total Annual:
5,000,000-10,000,000
Employee Number:
10~25
Ecer Certification：
Site Member
JINXING MATECH is a research and development, production, processing and sales of integrated, comprehensive refractory metal, precious metal material manufacturer.JINXING MATECH is an expert provider on the metal solution. Especially on the products such as Tungsten , Tungsten copper , Titanium ... JINXING MATECH is a research and development, production, processing and sales of integrated, comprehensive refractory metal, precious metal material manufacturer.JINXING MATECH is an expert provider on the metal solution. Especially on the products such as Tungsten , Tungsten copper , Titanium ...
Get in touch with us
Leave a Message, we will call you back quickly!