KX 4J32 Corrosion Resistant Alloy Light Rod On Expansion Alloy
Product Description and Application
4J32 is also also known as Alloy32, Super Invar
4J32 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
- Product Fusion Process
Vacuum Induction Furnace(VIM) and Electroslag Remelting Furnace(ESR)
- Product Chemical Composition
| Alloy Grade |
Chemical Composition (Mass Fraction)(%) |
|||||||||
| C | Si | P | S | Cu | Cr | Mn | Ni | Co | Fe | |
| 4J32 | ≤ | |||||||||
| 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 | |
- Product Coefficient of Linear Expansion
| Alloy Grade | Sample Heat Treatment Institution |
Average Coefficient of Linear Expansion α(10-6/ K) |
|
| 20～l00℃ | 20～300°C | ||
| 4J32 | 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 | --- |
- Product Typical Expansion Coefficient
| Alloy Grade | Average Coefficient of Linear Expansion α(10-6/ K) | |||||
| 20～50℃ | 20～100℃ | 20～200℃ | 20～300℃ | 20～400℃ | 20～500℃ | |
| 4J32 | 0.7 | 0.8 | 1.4 | 4.3 | 7.2 | 9.3 |
- Productive Process
-
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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