EN13445-2:2021istheEuropeanstandardforunfiredpressurevessels.Toaddadescriptiveparagraph,youcouldincludethefollowing:EN13445-2:2021specifiestherequirementsformaterialstobeusedintheconstructionofunfiredpressurevessels.Thispartofthestandardcoverstheselectionandtestingofmaterials,includingmetallicmaterials,toensuretheymeetthenecessarymechanical,chemical,andphysicalpropertiesforsafeoperationunderpressure.Itprovidesguidelinesformaterialspecifications,permissiblestresses,andotheressentialcharacteristicsrequiredforcompliancewiththePressureEquipmentDirective(PED).Thestandardalsoaddressesmaterialidentification,traceability,anddocumentationtomaintainqualityandsafetythroughoutthemanufacturingprocess.Thisensuresthatallmaterialsusedinpressurevesselconstructionaresuitablefortheirintendedserviceconditionsandenvironmentalexposures.