Steel produced for Cryogenic cylinder can deliver performance at temperatures below-190 degrees Celsius. Such steels need so as to offer certain characteristics to be suited to the gas being stored, which are normally contained at high-pressure.
Both ASTM A553 Class 1 and sophistication 2 plates are rated as cryogenic steels for pressure vessel use. The fabric displays exactly the same characteristics as standard pressure vessel grades but with greater effectiveness against low temperature brittle fracture. Operating in temperatures above -190 degrees C, the steel is great for use within the storage of liquefied gases including Nitrogen, Oxygen and Argon.
Consideration must be given to the material used in accompanying fittings for that pressure vessel. This could include connecting valves and piping. It can be common for pressure vessels suitable for LNG tank to have a double walled design with an insulating layer to minimise any generation in heat.
Low notch toughness at low temperature can be a normal source of brittle fracture (notch toughness being low absorption energy as identified in a Charpy Impact Test). Therefore steels with dexepky37 notch toughness are likely to crack at low temperature. The reverse can be said for Vacuum building including ASTM A553 which display high notch toughness and thus perfect for utilization in liquid gas storage.
Testing from the material before fabrication is crucial to ensure there are no flaws from the material before it is welded. There are a variety of tests available for example the Charpy Impact Test along with other non-destructive test methods including the application of ultrasound and magnetic particles.