Steel produced for Cryogenic tank can deliver performance at temperatures below-190 degrees Celsius. Such steels need to be able to offer certain characteristics to become suited to the gas being stored, that happen to be normally contained at high pressure.
Both ASTM A553 Class 1 and Class 2 plates are rated as cryogenic steels for pressure vessel use. The information displays exactly the same characteristics as standard pressure vessel grades though with greater resistance to low temperature brittle fracture. Operating in temperatures more than -190 degrees C, the steel is perfect for utilization in the storage of liquefied gases like Nitrogen, Oxygen and Argon.
Consideration needs to be presented to the information found in accompanying fittings to the pressure vessel. This may include connecting valves and piping. It is common for pressure vessels intended for Vaporizer to have a double walled design having an insulating layer to minimise any generation in heat.
Low notch toughness at low temperature is actually a normal reason behind brittle fracture (notch toughness being low absorption energy as identified in a Charpy Impact Test). Therefore steels with dexepky37 notch toughness will likely crack at low temperature. The reverse can probably be said for Cryogenic like ASTM A553 which display high notch toughness and therefore well suited for utilization in liquid gas storage.
Testing of your material before fabrication is vital to ensure that there are no flaws inside the material before it is actually welded. There are lots of tests available for example the Charpy Impact Test along with other non-destructive test methods including the use of ultrasound and magnetic particles.