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Semiconductor applications with High Quality Invar 36 Frame and Plate
1 . Descriptions:
Classified as a controlled low expansion alloy Invar 36 has one of the lowest thermal expansion of all alloys and metals,a near zero coefficient of linear thermal expansion between the standard room temperature,20°C and 230°C.It is very workable material and easy to machine.
It is used in precision instruments such as clocks, physics laboratory devices, seismic creep gauges, shadow-mask frames, valves in motors, and antimagnetic watches, etc. However, it has a propensity to creep. In Land Surveying, when first-order (high-precision) elevation leveling is to be performed, the leveling rods used are made of Invar, instead of wood, fiberglass, or other metals.
| Grade | ％ | Ni | Cr | Fe | C | Mn | Si | Co | Mo | P | S |
| Invar 36 | Min | 35 | bal | 0.2 | |||||||
| Max | 37 | 0.5 | 0.05 | 0.6 | 0.3 | 1 | 0.5 | 0.02 | 0.02 |
| Compound Formula | FeNi |
| Appearance | Metallic solid in various forms(plats,sheet,powder,sputtering target,tube) |
| Melting Point | 1427℃ |
| Boiling Point | N/A |
| Density | 8.05g/cm³ |
| Solubility in H20 | Insoluble |
| Thermal Conductivity | 10.15 W/m-K |
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