| Classification: | Kovar Alloy |
|---|---|
| Density: | 8.2g/cm3 |
| Resisivity: | 0.48 |
| Curie Point: | 430 |
| State: | Soft 1/4hard 1/2hard Hard T-Hard |
| Brand: | Vacon 12 |
| Customization: |
|---|
Suppliers with verified business licenses
Audited Supplier Vacon 12 Fe-Ni-Co Glass Sealing Alloy Wire Kovar Alloy Wire
(Common Name: Kovar, Nilo K, KV-1, Dilver Po, Vacon 12)
Specification: Sheet/Plate, Bar/Rod/Wire/Coil,Capillary/Pipe/Tube
Size Range:
---*Sheet_Thickness 0.1mm~40.0mm, width:≤300mm,Condition: cold rolled(hot), bright, bright annealed
---*Round Wire_Dia 0.1mm~Dia 5.0mm,Condition: cold drawn, bright, bright annealed
---*Flat Wire_Dia 0.5mm~Dia 5.0mm,length:≤1000mm,Condition:flat rolled, bright annealed
---*Bar_Dia 5.0mm~Dia 8.0mm,length:≤2000mm,Condition:cold drawn,bright, bright annealed
Dia 8.0mm~Dia 32.0mm,length:≤2500mm,Condition:hot rolled,bright, bright annealed
Dia 32.0mm~Dia 180.0mm,length:≤1300mm,Condition:hot forging,peeled, turned, hot treated
---*Capillary_OD 8.0mm~1.0mm,ID 0.1mm~8.0mm,length:≤2500mm,Condition: cold drawn, bright, bright annealed
---*Pipe_OD 120mm~8.0mm,ID 8.0mm~129mm,length:≤4000mm,Condition: cold drawn, bright, bright annealed
Application:
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.
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 |
Tensile Strength, MPa
| 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(Ωmm2/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 |
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 |
Thermal conductivity
| θ/ºC | 100 | 200 | 300 | 400 | 500 |
| λ/ W/(m*ºC) | 20.6 | 21.5 | 22.7 | 23.7 | 25.4 |
| 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 |
Style of supply
| Alloys Name | Type | Dimension | ||
| 4J29 | Wire | D= 0.1~8mm | ||
| 4J29 | Strip | W= 5~250mm | T= 0.1mm | |
| 4J29 | Foil | W= 10~100mm | T= 0.01~0.1 | |
| 4J29 | Bar | Dia= 8~100mm | L= 50~1000 | |
1. What's the minimum quantity customer can order?
If we have your size in stock, we can provide any quantity you want.
If we do not have, for spool wire, we can produce 1 spool, about 2-3kg. For coil wire, 25kg.
2. How can you pay for small sample amount?
We have Western union account, wire transfer for sample amount also ok.
3. Customer do not have express account. How will us arrange the delivery for sample order?
Just need to provide your address information, we will check the express cost, you can arrange the express cost together with sample value.
4. What's our payment terms?
We can accept LC T/T payment terms, it also depending on delivery and total amount. Let's talk more in details after getting your detailed requirements.
5. Do you provide free samples?
If you want several meters and we have stock of your size, we can provide, customer need to bear the International express cost.
6. What's our working time?
We will give you reply through email/phone Online contact tool within 24 hours. No matter working day or holiday
Suppliers with verified business licenses
Audited Supplier 
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