EN ISO 21028-1:2016

European foreword
Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 Toughness requirements
Bibliography
Annex ZA (informative) - Relationship between this
         European Standard and the Essential
         Requirements of Directive 2014/68/EU
         of the European Parliament and of the
         Council of 15 May 2014 on the harmonization
         of the laws of the Member States relating
         to the making available on the market of
         pressure equipment

ISO 21028-1:2016 specifies the toughness requirements of metallic materials for use at a temperature below -80 °C to ensure their suitability for cryogenic vessels.ISO 21028-1:2016 is not applicable to unalloyed steels and cast materials.