ISO 17781:2017
Current
The latest, up-to-date edition.
Petroleum, petrochemical and natural gas industries — Test methods for quality control of microstructure of ferritic/austenitic (duplex) stainless steels
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English, French
24-07-2017
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ISO 17781:2017 specifies quality control testing methods and test conditions for the characterization of microstructure in relation to relevant properties in ferritic/austenitic (duplex) stainless steel components supplied in the solution annealed condition and fabrication welds in the as welded condition.
ISO 17781:2017 supplements the relevant product and fabrication standards with respect to destructive testing methods including sampling of test specimens, test conditions and test acceptance criteria to show freedom from deleterious intermetallic phases and precipitates in duplex stainless steels. In addition, this document specifies the documentation of testing and test results by the testing laboratory.
NOTE 1 This document 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.
NOTE 2 The austenite spacing is relevant to the susceptibility of duplex stainless steels to hydrogen-induced stress cracking (HISC) in subsea applications where cathodic protection is applied. This falls outside the scope of this document. Reference is made to DNV/GL RP-F112[4].
| Committee |
ISO/TC 67
|
| DocumentType |
Standard
|
| Pages |
18
|
| PublisherName |
International Organization for Standardization
|
| Status |
Current
|
| Standards | Relationship |
| AS ISO 17781:2022 | Identical |
| NEN EN ISO 17781 : 2017 | Identical |
| I.S. EN ISO 17781:2017 | Identical |
| PN EN ISO 17781 : 2017 | Identical |
| SN EN ISO 17781:2017 | Identical |
| UNI EN ISO 17781 : 2017 | Identical |
| SS-EN ISO 17781:2017 | Identical |
| NF EN ISO 17781:2017 | Identical |
| BS EN ISO 17781:2017 | Identical |
| EN ISO 17781:2017 | Identical |
| DIN EN ISO 17781:2017-11 | Identical |
| UNE-EN ISO 17781:2017 | Identical |
| PNE-prEN ISO 17781 | Identical |
| ASTM E 1245 : 2003 | Standard Practice for Determining the Inclusion or Second-Phase Constituent Content of Metals by Automatic Image Analysis |
| ASTM E 562 : 2011 | Standard Test Method for Determining Volume Fraction by Systematic Manual Point Count |
| ISO 148-1:2006 | Metallic materials Charpy pendulum impact test Part 1: Test method |
| ASTM A 1058 : 2009 | Standard Test Methods for Mechanical Testing of Steel Products<char: emdash>Metric |
| ASTM A 370 : 2010 | Standard Test Methods and Definitions for Mechanical Testing of Steel Products |
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