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| Categories | Expansion Alloy |
|---|---|
| Brand Name: | KAIXIN |
| Model Number: | KX-Alloy EX32 |
| 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: | Low expansion Fe-Ni-Co Alloy |
| Raw Materials: | NI31.5-33%，CO3.2-4.2%,Fe Rem |
| Executive standard: | ASTM1684 |
| Delivery State: | Soft State |
| Application: | Produce a variety of instruments, instrument parts, thermal bimetallic passive layer, resonant cavity with the stable size |
| Features: | High hardness and good processing performance |
| Size: | Negotiable |
| Company Info. |
| Danyang Kaixin Alloy Material Co., Ltd. |
| Verified Supplier |
| View Contact Details |
| Product List |
Product Description and Application
Super Invar is also also known as 4J32, Super Invar
Super Invar alloy is called Super-Invar alloy. Its expansion coefficient is lower than 4J36 alloy in the range of -60 ~ 80℃, but its microstructure stability is worse than 4J36 alloy at low temperature. The alloy is mainly used in the manufacture of highly precise instrument parts requiring sizes within the range of ambient temperature variations.
Process Performance and Requirements
Vacuum Induction Furnace(VIM) and Electroslag Remelting Furnace(ESR)
| Alloy Grade | Chemical Composition (Mass Fraction)(%) | |||||||||
| C | Si | P | S | Cu | Cr | Mn | Ni | Co | Fe | |
| Super Invar | ≤ | |||||||||
| 0.05 | 0.2 | 0.02 | 0.02 | 0.40～0.80 | --- | 0.20～0.60 | 31.5～33.0 | 3.20～4.20 | Rem | |
| Alloy Grade | Sample Heat Treatment Institution | Average Coefficient of Linear Expansion α(10-6/ K) | |
| 20～l00℃ | 20～300°C | ||
| Super Invar | The semi-finished sample was heated to 840±10°C, heat preservation for 1 hour, water quenched and then the sample was processed into finished sample. At 315±l0℃ heat preservation for 1 hour with furnace cooling or air cooling | ≤1.0 | --- |
| Alloy Grade | Average Coefficient of Linear Expansion α(10-6/ K) | |||||
| 20～50℃ | 20～100℃ | 20～200℃ | 20～300℃ | 20～400℃ | 20～500℃ | |
| Super Invar | 0.7 | 0.8 | 1.4 | 4.3 | 7.2 | 9.3 |
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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