KX 4J33 Corrosion Resistant Alloy Light Rod On Expansion Alloy
Product Description and Application
4J33 is also known as Alloy 33
4J33 is constant expansion ceramic teal alloy, which is a ceramic sealing alloy developed on the basis of our ceramic characteristics. The linear expansion coefficient of the alloy is similar to that of 95%Al2O3 ceramics in the temperature range of -60℃ ~ 600℃. It is mainly used for matching sealing with ceramics,which is an important sealing structural material in electric vacuum industry.
Process Performance and Requirements
- Product Fusion Process
Vacuum Induction Furnace(VIM) and Electroslag Remelting Furnace(ESR)
- Product Chemical Composition
| Alloy Grade | Chemical Composition % | |||||||
| C | P | S | Mn | Si | Ni | Co | Fe | |
| Not more than | ||||||||
| 4J33 | 0.03 | 0.02 | 0.02 | 0.5 | 0.3 | 32.1～ | 14.0～ | Rem |
- Product Average Linear Expansion Coefficient
| Alloy Grade | Sample Heat Treatment Institution |
Average Coefficient of Linear Expansion α/(10-6/K) |
|||
| 20～300 ℃ | 20～400 ℃ | 20～500 ℃ | 20～ 600 ℃ | ||
| 4J33 | It is heated to 900±20 ℃ in a protective atmosphere or vacuum, hold for 1 hour, then cool to 200 ℃ or less at a speed of no more than 5 ℃ / min | ----- | 6.0～6.8 | 6.6～7.4 | ----- |
- Product Typical Average Linear Expansion Coefficient
| Alloy Grade |
Average Linear Expansion Coefficient over Different Temperature Ranges α/(10-6/ k) |
||||
| 20～200 ℃ | 20～300 ℃ | 20～400 ℃ | 20～500 ℃ | 20～600 ℃ | |
| 4J33 | 7.1 | 6.5 | 6.3 | 7.1 | 8.5 |
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Wire Tensile Strength
| State Code | State | Tensile Strength／MPa |
| R | Soft State | <585 |
| 1 | Hard State | >860 |
- Strip Tensile Strength Density
| State Code | State | Tensile Strength／MPa |
| R | Soft State | <570 |
| l | Hard State | >700 |
- Productive Process
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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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