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Cryogenic material property information
Helium
Cryogenic properties of helium 4:
- Boiling point (1 atmosphere): 4.21 K
- Critical: temperature 5.20 K
- Gas-to-liquid volume ratio: 866
- Volume boiled off in one hour for 1 W heat input: 1.4 litres
Cryogenic properties of helium 3:
- Boiling point (1 atmosphere): 3.19 K
- Critical temperature: 3.32 K
- Gas-to-liquid volume ratio: 662
Thermal contraction at cryogenic temperatures
The graph below shows the thermal contraction between room temperature and 4 K
for some materials commonly used in cryostats:
Links to sites with more information can be found here.
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Page created: Adam Woodcraft
Last edited 2009-8-17
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