CHANGZHOU LIANGRU INTERNATIONAL TRADE CO., LTD.
| Payment Terms | T/T, L/C |
| Supply Ability | 50~80 TONS per MONTH |
| Delivery Time | 45~60days |
| Packaging Details | Wooden Box, size as per guests' request |
| Features | High Curie Point And Has Good Low Temperature Tissue Stability |
| Shape | Wire,Strip,Rod,Tube,Plate |
| Alloy Type | Fe-Ni-Co Glass Sealing Alloy |
| Raw Materials | NI28.5-29.5%,CO16.8-17.8% |
| Executive Standard | ASTM F15 Kovar Tube |
| Delivery Status | Soft State |
| Application | Electrovacuum Component |
| Size | Negotiable |
| Density | 8.3 G/cm3 |
| Melting Point | 1425-1450°C (2597-2642°F) |
| Modulus Of Elasticity | 200 GPa (29 X 106 Psi) |
| Name | Kovar Alloy Tube |
| Brand Name | liangru |
| Model Number | Alloy Kovar tube |
| Certification | ISO9001:2015 |
| Place of Origin | China |
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Product Specification
| Payment Terms | T/T, L/C | Supply Ability | 50~80 TONS per MONTH |
| Delivery Time | 45~60days | Packaging Details | Wooden Box, size as per guests' request |
| Features | High Curie Point And Has Good Low Temperature Tissue Stability | Shape | Wire,Strip,Rod,Tube,Plate |
| Alloy Type | Fe-Ni-Co Glass Sealing Alloy | Raw Materials | NI28.5-29.5%,CO16.8-17.8% |
| Executive Standard | ASTM F15 Kovar Tube | Delivery Status | Soft State |
| Application | Electrovacuum Component | Size | Negotiable |
| Density | 8.3 G/cm3 | Melting Point | 1425-1450°C (2597-2642°F) |
| Modulus Of Elasticity | 200 GPa (29 X 106 Psi) | Name | Kovar Alloy Tube |
| Brand Name | liangru | Model Number | Alloy Kovar tube |
| Certification | ISO9001:2015 | Place of Origin | China |
| High Light | Ni29Co18 Kovar Alloy ，F15 Kovar Alloy ，Nilo K kovar pipe | ||
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 | |||||||||||
| 4J29 | 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℃ | ||
| Nilo K | 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) | |
| Nilo K | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ |
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 |
Company Details
Business Type:
Manufacturer,Exporter,Trading Company
Year Established:
2008
Total Annual:
200000000-30000000
Employee Number:
8~15
Ecer Certification：
Verified Supplier
CHANGZHOU LIANGRU INTERNATIONAL TRADE 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 wir... CHANGZHOU LIANGRU INTERNATIONAL TRADE 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 wir...
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