JINXING MATECH CO LTD
| Payment Terms | L/C, T/T |
| Supply Ability | 3000T |
| Delivery Time | 35days |
| Packaging Details | Standard wooden case |
| Product Type | 4j29 Kovar Precision Alloy tube for Glass Plastic Seals |
| Material | Feni Alloy |
| Carbon Content | low |
| Transport Package | wooden case |
| Shape | round bar |
| Condition | soft |
| Surface | Bright |
| Origin | China |
| Brand Name | JX |
| Model Number | 4j29 Kovar Precision Alloy Tube |
| Certification | ISO |
| Place of Origin | china |
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Product Specification
| Payment Terms | L/C, T/T | Supply Ability | 3000T |
| Delivery Time | 35days | Packaging Details | Standard wooden case |
| Product Type | 4j29 Kovar Precision Alloy tube for Glass Plastic Seals | Material | Feni Alloy |
| Carbon Content | low | Transport Package | wooden case |
| Shape | round bar | Condition | soft |
| Surface | Bright | Origin | China |
| Brand Name | JX | Model Number | 4j29 Kovar Precision Alloy Tube |
| Certification | ISO | Place of Origin | china |
| High Light | Kovar Precision Alloy Tube ，4j29 Precision Alloy Tube ，Plastic Seals Kovar Alloy Tube | ||
Kovar Precision Alloy tube Description
Kovar Tube is a nominal 29%NiCoFe alloy that is a well-known glass-sealing alloy suitable for sealing to hard glasses.
(Common Name: Kovar, NiFeCo29, NiCoFe294,Nilo K)
Kovar Precision Alloy tube Chemical Domposition
| alloy | C | Mn | Si | P | S | Ni | Cr | Co | Cu | Mo | Fe |
| 4J29 | ≤0.03 | ≤0.50 | ≤0.30 | ≤0.020 | ≤0.020 | 28.5~29.5 | ≤0.20 | 16.8~17.8 | ≤0.2 | ≤0.2 | balance
|
| Controlled Expansion and Glass Sealing Alloys | |||
| German standard number | Tradename | DIN | UNS |
| 1.2937 | Alloy 29 | 17745 | K92900 |
| 1.3917 | Alloy 42 | 17745 | K94100 |
| 1.3922 | Alloy 48 | 17745 | K94800 |
| 1.3981 | Pernifer2918 | 17745 | K94610 |
| 2.4478 | NiFe 47 | 17745 | N14052 |
| 2.4486 | NiFe47Cr | 17745 | - |
| Density (g/cm3) | 8.2 |
| Electrical resistivity at 20ºC(OMmm2/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 |
| 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 |
The heat treatment process
| Annealing for stress relief | Heated to 470~540ºC and hold 1~2 h. Cold down |
| annealing | In vacuum heated to 750~900ºC |
| Holding time | 14 min~1h. |
| Cooling rate | No more than 10 ºC/min cooled to 200 ºC |
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 |
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 ...
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