Shanghai Tankii Alloy Material Co.,Ltd
| Payment Terms | L/C, T/T, Western Union |
| Supply Ability | 1000000 Pcs per Month |
| Delivery Time | 7-15 work days |
| Packaging Details | wooden case / Carton |
| Material | Fe-Ni-Co Alloys |
| Diameter | 1mm Min |
| Wall thickness | 0.02mm Min |
| Length | customized |
| Sample | Accepted |
| Surface | Bright |
| Name | Ni29co18/ Uns K94610 / 4J29 |
| Brand Name | TANKII |
| Model Number | Kovar Alloys |
| Certification | ISO SGS |
| Place of Origin | Shanghai, China, |
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Product Specification
| Payment Terms | L/C, T/T, Western Union | Supply Ability | 1000000 Pcs per Month |
| Delivery Time | 7-15 work days | Packaging Details | wooden case / Carton |
| Material | Fe-Ni-Co Alloys | Diameter | 1mm Min |
| Wall thickness | 0.02mm Min | Length | customized |
| Sample | Accepted | Surface | Bright |
| Name | Ni29co18/ Uns K94610 / 4J29 | Brand Name | TANKII |
| Model Number | Kovar Alloys | Certification | ISO SGS |
| Place of Origin | Shanghai, China, | ||
| High Light | high temperature metal alloys ，high temperature wire | ||
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(%):
Grade | C | Si | Mn | P | S | Ni | Co | Fe |
4J29 | 0.015 | 0.12 | 0.25 | 0.006 | 0.005 | 29.10 | 17.3 | Bal |
3. Physical properties
Grade | Density(g/cm3) | Thermal expansion coefficient (10-6/°C) | Curie point(°C) | Volume resistivity(μΩ.cm) | Thermal conductivity(W/m. °C) |
4J29 | 8.17 | 5.0(20~300°C) 5.2(20~450°C | 430 | 46(20°C) | 20.3 |
4. Mechnical properties:
Grade | Yield Strength(Mpa) | Tensile Strength | Elongation(%) | Hardness(HV) | |
4J29 | Temper rolled | 695 | 780 | 5 | 230 |
As annealed | 315 | 520 | 24 | 148 | |
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
Company Details
Business Type:
Manufacturer,Exporter
Year Established:
1981
Total Annual:
8000000-100000000
Employee Number:
90~100
Ecer Certification：
Verified Supplier
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, ribb... 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, ribb...
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