ASTM_D_7548_-_09.pdf

Designation:D754809Standard Test Method forDetermination of Accelerated Iron Corrosion in PetroleumProducts1This standard is issued under the fixed designation D7548;the number immediately following the designation indicates the year oforiginal adoption or,in the case of revision,the year of last revision.A number in parentheses indicates the year of last reapproval.Asuperscript epsilon()indicates an editorial change since the last revision or reapproval.1.Scope1.1 This test method covers an accelerated laboratory andfield procedure for the determination of corrosion of iron,inthe presence of water,on samples such as gasoline and gasolineblended with 10%ethanol,E10(Specification D4814);gasoline-blend components(except butane);diesel fuel andbiodiesel B5,except Grade No.4-D(Specification D975);biodiesel B6 to B20(Specification D7467);diesel-blend com-ponent such as light cycle-oil;No.1 fuel oil,No.2 fuel oil(Specification D396);aviation turbine fuel(SpecificationD1655).1.2 The values stated in SI units are to be regarded as thestandard.The values in parentheses are for information only.1.3 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:2A108 Specification for Steel Bar,Carbon and Alloy,Cold-FinishedD97 Test Method for Pour Point of Petroleum ProductsD396 Specification for Fuel OilsD665 Test Method for Rust-Preventing Characteristics ofInhibited Mineral Oil in the Presence of WaterD975 Specification for Diesel Fuel OilsD1193 Specification for Reagent WaterD1655 Specification for Aviation Turbine FuelsD4814 Specification for Automotive Spark-Ignition EngineFuelD7467 Specification for Diesel Fuel Oil,Biodiesel Blend(B6 to B20)G15 Terminology Relating to Corrosion and Corrosion Test-ing(Withdrawn 2010)32.2 Other Standards:070 M20 of BS 970-1 or European Steel C22E number1.1151 Carbon and Carbon Manganese Steels includingFree Cutting Steels3.Terminology3.1 Definitions:3.1.1 corrosion,nchemical or electrochemical reactionbetween a material,usually a metal,and its environment thatproduces a deterioration of the material and its properties.G153.1.2 rust,ncorrosion product consisting primarily ofhydrated iron oxide.3.1.2.1 DiscussionRust is a term properly applied only toferrous alloys.G153.2 Acronyms:3.2.1 TPtemperature probe.4.Summary of Test Method4.1 Apolished iron corrosion test-rod is immersed in 50 mLof the sample being tested and heated to 37.8C(100F),atwhich point 5 mL of reagent water,Type III or better,is addedto the sample.Sample temperature is maintained between 37 to39C(98 to 102F),with the target being 37.8C(100F),for1 h.At the end of the heating period,test-rod is removed,rinsed,and examined for the degree/category of corrosionagainst the“ASTM Iron Corrosion Rating ChartTest MethodD7548.”5.Significance and Use5.1 In general,wherever the possibility exists of watergetting mixed with products/material(covered under 1.1)theresults obtained by this test method will indicate the degree towhich corrosion of iron components can be expected.1This test method is under the jurisdiction of ASTM Committee D02 onPetroleum Products and Lubricants and is the direct responsibility of SubcommitteeD02.14 on Stability and Cleanliness of Liquid Fuels.Current edition approved June 15,2009.Published September 2009.DOI:10.1520/D7548-09.2For referenced ASTM standards,visit the ASTM website,www.astm.org,orcontact ASTM Customer Service at serviceastm.org.For Annual Book of ASTMStandards volume information,refer to the standards Document Summary page onthe ASTM website.3The last approved version of this historical standard is referenced onwww.astm.org.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 5.2 Test also determines the antirust properties of products/material(covered under 1.1)in preparation for the variousstages through which the tested product may pass prior to orduring its transport through a pipeline.5.3 Test results are also meant to show whether or not thedosage levels and type of iron corrosion inhibitor added to aproduct/material(covered under 1.1)is sufficient for achievingthe desired protection of affected assets such as storage tanks,process lines,and shipment systems.6.Apparatus6.1 Stirring Hotplate,4,5Single or multi-position(see Ap-pendix X1),ceramic top,capable of accommodating Acceler-ated Iron Corrosion Test(AICT)apparatus specified in A1.1.Stirrer should be capable of stirring at a rate of 900 6 100 rpm.6.2 Water BathBeaker,150 to 200 mL capacity,borosili-cate glass,containing 100 mL of distilled water,or other typeof water bath capable of accommodating Accelerated IronCorrosion Test(AICT)apparatus specified in A1.1.6.3 Test JarCylindrical,clear glass,90-mL capacity,flatbott