This European Standard species the toughness requirements of the metallic materials for use at atemperature between-80 0C and-20 0C ensuring suitability for use for the cryogenic vessels.
EN 1252-2:2001 history
2001EN 1252-2:2001 Cryogenic Vessels - Materials - Part 2: Toughness Requirements for Temperatures between -80 degrees C and -20 Degrees C