Material: P900,X8CrMnN18 18 Process:Cold expand Heat treatment: Solution , Stress Relief Standard:ASTM A289 or Others Material: P900,X8CrMnN18 18 or othersProcess:Cold expand or othersHeat treatment: Solution , Stress ReliefStandard:ASTM A289 or OthersTechnical requirements1)Grain size:1 or finer, as per ASTM E1122)Cleanliness rating:2 or less, as per ISO 4967 or ASTM E453)Permeability:1.03 Max, ...