DIN EN ISO 17781:2015-04

This ISO standard provides quality control testing methods, conditions and specifies acceptance criteria to be used for the characterization of microstructure in relation to relevant properties in wrought, cast, hot isostatically pressed and welded austenitic/ferritic (duplex) stainless steel components in the solution annealed condition and fabrication welds. The standard considers 'lean', 'standard', 'super' and 'hyper' duplex grades. The standard is based upon experience with duplex stainless steels in offshore oil and gas industry applications including topside and subsea hydrocarbon service, sea water service as well as structural use.