Product Details
Place of Origin: China
Brand Name: KAIXIN
Certification: ISO9001:2015
Model Number: KX-Alloy Kovar alloy
Payment & Shipping Terms
Minimum Order Quantity: 50KG
Price: To negotiate
Packaging Details: Wooden Box, size as per guests' request
Delivery Time: 30days
Payment Terms: T/T, L/C
Supply Ability: 50~80TONS per MONTH
Features: |
High Curie Point And Has Good Low Temperature Tissue Stability |
Shape: |
Sheet Plate |
Alloy Type: |
Fe-Ni-Co Glass Sealing Alloy |
Raw Materials: |
NI28.5-29.5%,CO16.8-17.8% |
Executive Standard: |
ASTM F15 |
Delivery State: |
Soft State |
Application: |
Electrovacuum Component |
Size: |
Negotiable |
Features: |
High Curie Point And Has Good Low Temperature Tissue Stability |
Shape: |
Sheet Plate |
Alloy Type: |
Fe-Ni-Co Glass Sealing Alloy |
Raw Materials: |
NI28.5-29.5%,CO16.8-17.8% |
Executive Standard: |
ASTM F15 |
Delivery State: |
Soft State |
Application: |
Electrovacuum Component |
Size: |
Negotiable |
KX Nilo K Solid Solution Light Rod Process Performance On Kovar Alloy
Product Description and Application
Kovar is also known as Nilo k,Dilver,Pernifer 2918,W.N 1.3981,UNS K94610,FeNi29Co17,29HK (Russian),ASTM F15, 4J29 (China)
Kovar has linear expansion coefficient near borosilicate glass at 20 ~ 450℃ with high Curie point and excellent stability of low temperature arrangement. The oxide film of the alloy is fine and can be well moistened by glass. And not react effectively with mercurynot, which is suitable for use in mercury discharge surface. It is the primary sealing structure data of electric vacuum device. It is used to make Fe-Ni-Co alloy strip, rod, plate and pipe with hard glass or ceramic matching sealing. It is mainly used in vacuum electronics, power electronics and other professional devices.
Process Performance and Requirements
Vacuum Induction Furnace(VIM) and Electroslag Remelting Furnace(ESR)
| Alloy Grade |
Chemical Composition(Mass Fraction)%
|
||||||||||
| C | P | S | Mn | Si | Cu | Cr | Mo | Ni |
Co |
Fe |
|
| Not more than | |||||||||||
| Kovar | 0.03 | 0.020 | 0.020 | 0.50 | 0.30 | 0.20 | 0.20 | 0.20 | 28.5~29.5 | 16.8~17.8 | Rem |
| Alloy Grade |
Sample Heat Treatment Institution |
Average Coefficient of Linear Expansion,1/℃ | |
| 20℃~400℃ | 20℃~450℃ | ||
| Kovar | It is heated to 900 ° C±20 ° C in vacuum or hydrogen gas atmosphere, kept for 1 hour, then heated to 1100° C±20 ° C, kept for 15 minutes and cooled to less than 200 ° C at a speed of no more than 5 ° C/min | 4.6 ~ 5.2 | 5.1 ~ 5.5 |
| Shape | Tensile Strength,MPa | ||||
| Soft State(S) | 1/4 Hard State(H1/4) | 1/2 Hard State(H1/2) | 3/4 Hard State(H3/4) | Hard State(H) | |
| Wire | ≤ 585 | 585 ~ 725 | 655 ~ 795 | 725 ~ 860 | ≥ 860 |
| Strip | ≤ 570 | 520 ~ 630 | 590 ~ 700 | 600 ~ 770 | ≥ 700 |
| Alloy Grade | Delivery State | |||||
| Soft State(S) | 1/4 Hard State(H1/4) | 1/2 Hard State(H1/2) | 3/4 Hard State(H3/4) | Hard State(H) | Drawing Quality(DQ) | |
| Kovar | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ |
Professional Customization
| Cold-drawn Wire | ¢0.3~¢18mm(Delivery in rolls or trays) |
| Hot-Rolling Wire | ¢5.5~¢20mm(Delivery in rolls) |
| Strip | thickness 0.1~4.5*width 6~350mm(Supply in rolls or straight strips) |
| Smooth Forged Rod on a Lathe |
¢60~350mm,L800-2500mm |
| Hot-rolled Burnishing | ¢20~80mm,L1000-5000mm |
| Cold Drawn and Burnishing | ¢2.5~18mm,L1000-8000mm |
| Seamless Tube | ¢1~275mm,wall thickness 0.2~30,L1000-8000mm |
FAQ:
What material is Kovar?
Iron-Nickel-Cobalt alloy
Kovar is an Iron-Nickel-Cobalt alloy, best known for having a similar coefficient of thermal expansion to Borosilicate glass and other optical materials that allows for glass-to-metal bonds.
Is Kovar hard to machine?
In the annealed condition, Kovar / F-15 Alloy is more difficult to machine because it is soft and gummy. Tooling tends to plow the material instead of cleanly cutting into it, and does not easily form chips.
Can you laser cut Kovar?
The UV laser cuts metals, non-metallic insulating, and other lamination materials. The materials include but are not limited to most stainless steel, copper, brass, Kovar, nickel, aluminum, blue tempered steel, invar, Mylar, Kapton, and Nomex paper.
