ASASTM_G_31_-_12a_NACE_TM0169_Standard.pdf

Designation:NACE TM0169/G3112aStandard Guide forLaboratory Immersion Corrosion Testing of Metals1This standard is issued under the fixed designation NACE TM0169/G31;the number immediately following the designation indicatesthe year of original adoption or,in the case of revision,the year of last revision.A number in parentheses indicates the year of lastreapproval.A superscript epsilon()indicates an editorial change since the last revision or reapproval.1.Scope1.1 This guide covers and describes the factors that influ-ence laboratory immersion corrosion tests,particularly massloss tests.These factors include apparatus,sampling,testspecimen,testconditions(testsolutioncomposition,temperature,gas sparging,fluid motion,solution volume,method of supporting test specimens,duration of test),methodsof cleaning test specimens,interpretation of results,andcalculation of corrosion rates.This guide also emphasizes theimportance of recording all pertinent data and provides achecklist for reporting test data.1.2 The specific evaluation of localized attack,environmen-tally assisted cracking,and effects of solution flow are notwithin the scope of this guide.1.3 This guide is intended to be used by those designinglaboratory immersion tests who may not be familiar with all ofthe variables to consider and the pitfalls that could be encoun-tered when designing and conducting this kind of testing.Itshould be used as a reference to ensure that the test will allowgeneration of data relevant to the application with the mini-mum of interferences.1.4 The values stated in SI units are to be regarded as thestandard.The values given in parentheses are for informationonly.1.5 This standard does not purport to address all of thesafety concerns,if any,associated with its use.It is theresponsibility of the user of this standard to establish appro-priate safety and health practices and determine the applica-bility of regulatory limitations prior to use.2.Referenced Documents2.1 ASTM Standards:2A262 Practices for Detecting Susceptibility to IntergranularAttack in Austenitic Stainless SteelsD1193 Specification for Reagent WaterE8 Test Methods for Tension Testing of Metallic MaterialsE300 Practice for Sampling Industrial ChemicalsG1 Practice for Preparing,Cleaning,and Evaluating Corro-sion Test SpecimensG28 Test Methods for Detecting Susceptibility to Inter-granular Corrosion in Wrought,Nickel-Rich,Chromium-Bearing AlloysG34 Test Method for Exfoliation Corrosion Susceptibility in2XXX and 7XXX Series Aluminum Alloys(EXCO Test)G46 Guide for Examination and Evaluation of Pitting Cor-rosionG48 Test Methods for Pitting and Crevice Corrosion Resis-tance of Stainless Steels and Related Alloys by Use ofFerric Chloride SolutionG66 Test Method for Visual Assessment of ExfoliationCorrosion Susceptibility of 5XXX Series Aluminum Al-loys(ASSET Test)G67 Test Method for Determining the Susceptibility toIntergranular Corrosion of 5XXX Series Aluminum Al-loys by Mass LossAfter Exposure to NitricAcid(NAMLTTest)G71 Guide for Conducting and Evaluating Galvanic Corro-sion Tests in ElectrolytesG78 Guide for Crevice Corrosion Testing of Iron-Base andNickel-Base Stainless Alloys in Seawater and OtherChloride-Containing Aqueous EnvironmentsG82 Guide for Development and Use of a Galvanic Seriesfor Predicting Galvanic Corrosion PerformanceG107 Guide for Formats for Collection and Compilation ofCorrosion Data for Metals for Computerized DatabaseInputG108 Test Method for Electrochemical Reactivation(EPR)for Detecting Sensitization of AISI Type 304 and 304LStainless Steels1This guide is under the jurisdiction of NACE/ASTM Committee J01,JointCommittee on Corrosion,and is the direct responsibility of Subcommittee J01.01,Working Group on Laboratory Immersion Tests.Current edition approved July 1,2012.Published October 2012.Originallyapproved in 1972.Last previousASTM edition approved in 2012 as G3112.NACEedition originally approved in 1969.Last previous NACE edition approved in 2000as TM0169-2000.DOI:10.1520/G0031-12A.2For referenced ASTM standards,visit the ASTM Web site,www.astm.org,orcontact ASTM Customer Service at serviceastm.org.For Annual Book of ASTMStandards volume information,refer to the standards Document Summary page ontheASTM Web site.For NACE standards,visit the NACE Web site,www.nace.org,or contact NACE FirstService at firstservicenace.org.NACE International/ASTM International 2013 All rights reserved1 G110 Practice for Evaluating Intergranular Corrosion Resis-tance of Heat Treatable Aluminum Alloys by Immersionin Sodium Chloride+Hydrogen Peroxide SolutionG112 Guide for Conducting Exfoliation Corrosion Tests inAluminum AlloysG116 Practice for Conducting Wire-on-Bolt Test for Atmo-spheric Galvanic CorrosionG135 Guide for Computerized Exchange of Corrosion Datafor MetalsG170 Guide for Evaluating and Qualifying Oilfield andRefinery Corrosion Inhibitors in the LaboratoryG184 Practice for Evaluating and Qualifying Oil Field andRefinery Corrosion Inhibitors Using Ro