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| Categories | Expansion Alloy |
|---|---|
| Brand Name: | KAIXIN |
| Model Number: | KX-Alloy EX29 |
| Certification: | ISO9001:2015 |
| Place of Origin: | China |
| MOQ: | 200KG |
| Price: | To negotiate |
| Payment Terms: | T/T, L/C |
| Supply Ability: | 50~80TONS per MONTH |
| Delivery Time: | 45~60days |
| Packaging Details: | Wooden Box, size as per guests's request |
| Shape: | Wire,Strip,Rod,Tube,Plate |
| Alloy Type: | Nickel-iron-cobalt |
| Raw Materials: | NI28.5-29.5%,CO16.8-17.8% |
| Executive standard: | ASTM F15 |
| Delivery State: | Soft State |
| Application: | Precision instruments, aerospace and etc high-tech fields |
| Features: | Sealing alloy used for hard (high borosilicate) glass metal alloy sealing |
| Size: | Negotiable |
| Company Info. |
| Danyang Kaixin Alloy Material Co., Ltd. |
| Verified Supplier |
| View Contact Details |
| Product List |
Product Description and Application
4J29 is also know as Ni29Co18, Nilo K
4J29 is a typical Fe-Ni-Co hard-glass sealing alloy, which has been
used in aviation factories for a long time with stable performance.
The alloy has a dense oxide film, which can be well infiltrated by
glass. It is the main sealing structural material of electric
vacuum devices and mainly used for the glass sealing of electric
vacuum components such as transmitter tube, oscillation tube,
ignition tube, magnetron, transistor, sealing plug, relay, lead
line of integrated circuit, chassis, shell, bracket and etc.
Process Performance and Requirements
Vacuum Induction Furnace(VIM) and Electroslag Remelting
Furnace(ESR)
| Nilo K Chemical composition% | ||||||||||
| C | P | S | Mn | Si | Cu | Cr | Mo | Ni | Co | Fe |
| ≤0.03 | ≤0.02 | ≤0.02 | ≤0.5 | ≤0.3 | ≤0.2 | ≤0.2 | ≤0.2 | 28.5～29.5 | 16.8～17.8 | Rem |
| Density | 8.36g /cm3 |
| Status code | State | Tensile strength/MPa |
| R | Soft State | <585 |
| ¼I | ¼Hard State | 585～725 |
| ½I | ½Hard State | 655～795 |
| ¾I | ¾Hard State | 725～860 |
| I | Hard State’ | >860 |
| Grade | Sample Heat Treatment Institution | Average Coefficient of Linear Expansion α/(10-6/ K) | ||
| 20-300 ℃ | 20-400 ℃ | 20-450 ℃ | ||
| 4J29 | It was heated to 900±20 ℃ in hydrogen atmosphere, held for 1h, then reheated to 1100±20 ℃, held for 15min,then cooled to below 200 ℃ at a speed of no more than 5 ℃/ min | ---- | 4.6～5.2 | 5.1～5.5 |
| Alloy | Average Linear Expansion Coefficient α/(10-6/ K) | |||||||
| Grade | 20～200 ℃ | 20～300 ℃ | 20～400 ℃ | 20～450 ℃ | 20～500 ℃ | 20～600 ℃ | 20～700 ℃ | 20～800 ℃ |
| 4J29 | 5.9 | 5.3 | 5.1 | 5.3 | 6.2 | 7.8 | 9.2 | 10.2 |
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 |
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