1、Designation: G107 95 (Reapproved 2015)Standard Guide forFormats for Collection and Compilation of Corrosion Datafor Metals for Computerized Database Input1This standard is issued under the fixed designation G107; the number immediately following the designation indicates the year oforiginal adoption
2、 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 guide covers the data categories and specific dataelements (fields) con
3、sidered necessary to accommodate desiredsearch strategies and reliable data comparisons in computer-ized corrosion databases. The data entries are designed toaccommodate data relative to the basic forms of corrosion andto serve as guides for structuring multiple source databasecompilations capable o
4、f assessing compatibility of metals andalloys for a wide range of environments and exposure condi-tions.2. Referenced Documents2.1 ASTM Standards:2E8 Test Methods for Tension Testing of Metallic MaterialsE399 Test Method for Linear-Elastic Plane-Strain FractureToughness KIcof Metallic MaterialsE527
5、Practice for Numbering Metals and Alloys in theUnified Numbering System (UNS)E647 Test Method for Measurement of Fatigue CrackGrowth RatesE1314 Practice for Structuring Terminological Records Re-lating to Computerized Test Reporting and MaterialsDesignation Formats (Withdrawn 2000)3E1338 Guide for I
6、dentification of Metals and Alloys inComputerized Material Property DatabasesG1 Practice for Preparing, Cleaning, and Evaluating Corro-sion Test SpecimensG15 Terminology Relating to Corrosion and Corrosion Test-ing (Withdrawn 2010)3G34 Test Method for Exfoliation Corrosion Susceptibility in2XXX and
7、7XXX Series Aluminum Alloys (EXCO Test)G46 Guide for Examination and Evaluation of Pitting Cor-rosionG49 Practice for Preparation and Use of Direct TensionStress-Corrosion Test SpecimensG78 Guide for Crevice Corrosion Testing of Iron-Base andNickel-Base Stainless Alloys in Seawater and OtherChloride
8、-Containing Aqueous Environments3. Terminology3.1 DefinitionsFor definitions of terms applicable to thisguide see Practice E1314 and Terminology G15.4. Significance and Use4.1 The guide is intended to facilitate the recording ofcorrosion test results and does not imply or endorse anyparticular datab
9、ase design or schema. It provides a usefulreference to be consulted before initiating a corrosion test to besure plans are made to record all relevant data.4.2 Corrosion tests are usually performed following a pre-scribed test procedure that is often not a standard test method.Most corrosion tests i
10、nvolve concurrent exposure of multiplespecimens of one or more materials (refer to 6.1.1).4.3 This guide is designed to record data for individualspecimens with groupings by separate tests (as contrasted toseparate test methods) as described in 4.2 and 6.1.1.Consequently, some of the individual fiel
11、ds may apply to all ofthe specimens in a single test, while others must be repeated asoften as necessary to record data for individual specimens.4.4 The guidelines provided are designed for recording datafor entry into computerized material performance databases.They may be useful for other applicat
12、ions where systematicrecording of corrosion data is desired.4.5 Reliable comparisons of corrosion data from multiplesources will be expedited if data are provided for as many ofthe listed fields as possible. Comparisons are possible wheredata are limited, but some degree of uncertainty will be prese
13、nt.4.6 Certain specialized corrosion tests may require addi-tional data elements to fully characterize the data recorded.This guide does not preclude these additions. Other ASTMguides for recording data from mechanical property tests maybe helpful.1This guide is under the jurisdiction of ASTM Commit
14、tee G01 on Corrosion ofMetals and is the direct responsibility of Subcommittee G01.05 on LaboratoryCorrosion Tests.Current edition approved Nov. 1, 2015. Published December 2015. Originallyapproved in 1991. Last previous edition approved in 2008 as G10795(2008). DOI:10.1520/G0107-95R15.2For referenc
15、ed 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
16、.astm.org.Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States14.7 This guide does not cover the recording of data fromelectrochemical corrosion tests.4.8 These material identification guidelines are compatiblewith Guide E1338.5. Categoriz
17、ation of Corrosion Data5.1 This guide considers nine general categories for use indocumenting corrosion data. Categories, with input examples,are as follows:5.1.1 Test IdentificationUnique code to identify groupingsof multiple specimens exposed at the same time and underidentical conditions.5.1.2 Ty
18、pe of TestStandardized, laboratory, field tests; testrelation to specific process or application (for example, sulfidestress cracking test for sour gas production tubing).5.1.3 Test EmphasisSpecific form of corrosion or degra-dation (for example, pitting, corrosion-fatigue, crevicecorrosion, etc.).5
19、.1.4 EnvironmentGeneric description; identification,concentration, and state of principal components;contaminants, etc.5.1.5 Exposure ConditionsDuration, temperature, pH, hy-drodynamic conditions, aeration, etc.5.1.6 Material IdentificationMaterial class, subclass, andfamily, common name, standard d
20、esignation, condition, manu-facturing process, product form, etc.5.1.7 Specimen IdentificationSpecimen number, size,geometry, surface condition, composition, properties.5.1.8 Specimen PerformanceMass change, propertychange, performance relative to specific corrosion, or degrada-tion mechanism.5.1.9
21、Data Source or Reference.5.2 This guide permits supplementary notes to documentsupplementary information considered important in interpret-ing data.6. Data Searching6.1 This guide considers data to accommodate searches foridentifying and locating data and metadata in eight specificareas as follows:6
22、.1.1 Multiple specimens of one material included in sametest (that is, exposed in same or companion test rack exposedunder identical conditions in same or companion test vessel).6.1.2 Different materials included in same test.6.1.3 Material evaluated by specific standard test methods(by standardized
23、 test number).6.1.4 Materials exposed to specific environments with en-vironments defined by generic description (for example, sourgas) or by specific components (for example, hydrocar-bon+H2S).6.1.5 Specific materials, defined by class (for example,metals), subclass (for example, wrought aluminum),
24、 family(for example, Al-Si alloys), standard designation (UNS No.(see Practice E527), ASTM specification), or common name.6.1.6 Specific application or process (for example, sour gasproduction tubing, pulp bleaching).6.1.7 Type of corrosion or degradation mechanism (forexample, pitting, corrosion fa
25、tigue, etc.).6.1.8 Results from a specific reference or source.6.2 Additional information may be required to facilitatesupplementary search requirements. This guide does not pre-clude these additions.7. Data Entry Fields7.1 Data entry fields are listed in Table 1. The table containsthe following inf
26、ormation:7.1.1 The reference number is a unique number the firstthree digits of which refer to the relevant paragraph numbers inthis guide.7.1.2 The field name or object tag is a concise label for thefield. Tags are made up of one or more character stringsseparated by periods. The first character in
27、 each string must bealphabetic (az, AZ,”). Thereafter the characters may bealphanumeric (az, AZ,”, 09).7.1.2.1 Periods are used to separate subdivisions inherent inthe information, for example “Component.Name,” “Compo-nent.Conc.”7.1.2.2 Tags are case insensitive although mixed case issuggested for r
28、eadability. Mixed case is used when a tagsmeaning forms a single concept, for example “FlowRegime.”7.1.3 The field description is a textual description of thefield.7.1.4 The field type describes the format and allowedcontents for the field. The field may be one of the followingtypes:7.1.4.1 String (
29、STRING)A string is an undifferentiatedseries of characters. Strings may contain punctuation charac-ters except for a tab, new line, or leading semicolon.7.1.4.2 Quantity (QUANT)A quantity is a data aggregatemade of a real number and a unit. The last column of the tablegives suggested units for the f
30、ield. Alternative units may beused.7.1.4.3 Data (DATE)A date is a string of eight numericcharacters encoding year, month, and day in the orderYYYYMMDD.7.1.4.4 Time (TIME)A time is a string of six numericcharacters encoding hour, minute and second in the orderHHMMSS.7.1.4.5 Category Set (SET)A catego
31、ry set is a closed listof values for a particular field.Adatabase uses an integer valueto record the member of the category set. Category sets shouldnot be used for quantities. Use the quantity type, instead. Thelast column of the table gives a list of acceptable values andtheir meaning for each cat
32、egory set field.7.1.4.6 Tabular (TABLE)A tabular field is made up of agroup of values. The last column gives the title and type ofeach value.8. Keywords8.1 computerization; corrosion; data; database; material per-formance; metalG107 95 (2015)2TABLE 1 Standard Data Entry Fields for Corrosion Database
33、 DevelopmentReferenceNumberField Name or Object Tag Description Field Type Category Set/Suggested Units/Column Definition5.1.1 Test No individual test number to identify grouping ofspecimens tested concurrently. Seesubsequent entries of test methodSTRINGTYPE OF TEST5.1.2.1 Standard standard test spe
34、cification STRING5.1.2.2 Location field or laboratory test SET (1) F - field(2) L - Laboratory5.1.2.3 Date date test started DATETEST EMPHASIS5.1.3.1 CorrosionType type(s) of corrosion evaluated examples: generalcorrosion, stress corrosion, pitting, crevicecorrosion, hot or cold wall effects, fretti
35、ng, straycurrent, weld corrosion, corrosion-fatigue,galvanic corrosion, microbiological corrosionSTRINGCHEMISTRY OF ENVIRONMENT5.1.4.1 Environment generic description of environment STRING5.1.4.2 Component componentcommon name STRING5.1.4.3 Component.Registry chemical abstracts registry number STRIN
36、G5.1.4.4 Component.Conc concentration (liquids) QUANT g/L5.1.4.5 Component.Press partial pressure (gases) QUANT N/m2, psi5.1.4.6 Component.Form component form SET (1) solid(2) liquid(3) gaseous(4) aqueous liquid(5) non-aqueous solutions or emulsions5.1.4.7 IonicSpecies ionic species STRING5.1.4.8 In
37、hibitor inhibitors STRINGNote: many environments contain multiplecomponents. Reference numbers 5.1.4.1through 5.1.4.8 should be repeated for eachcomponent and no restrictions should beplaced on the number of components to bedescribed for any given environment.EXPOSURE CONDITIONS5.1.5.1 Duration expo
38、sure duration QUANT days5.1.5.2 MinTemp temperaturemin QUANT C, F5.1.5.3 MaxTemp temperaturemax QUANT C, F5.1.5.4 AvgTemp temperatureav QUANT C, F5.1.5.5 HeatTransfer heat transfer between specimen andenvironment. If YES, describe conditions in5.1.5.6SET (1) Yyes(2) Nno5.1.5.6 HeatTransfer.Descripti
39、on heat transfer conditions STRING5.1.5.7 MaxPH pHminimum QUANT5.1.5.8 MinPH pHmaximum QUANT5.1.5.9 AvgPH pHavg QUANT5.1.5.10 Alkalinity total alkalinity (total concentration of bases) QUANT moles/l5.1.5.11 Acidity total acidity (total concentration of acids) QUANT moles/l5.1.5.12 Conductivity condu
40、ctivity QUANT mhos/m5.1.5.13 Pressure pressure (absolute) QUANT Pa, psi5.1.5.14 Velocity velocity QUANT m/s, ft/s5.1.5.15 ReynoldsNo reynolds number QUANT5.1.5.16 FlowRegime flow SET (1) none(2) laminar(3) turbulent(4) forced convection5.1.5.17 Geometry system geometry at test sample STRING5.1.5.18
41、Sparging sparging SET (1) deaerated (vacuum, inert gas)(2) noneless than saturated (open to air)(3) air(4) oxygen(5) inert gas5.1.5.19 Agitation agitation SET (1) none(2) stirred(3) shaken(4) shaken but not bruised5.1.5.20 ExpZone exposure zone SET (1) continuous immersion(2) splash zone(3) waterlin
42、e(4) condensate zone(5) gaseous phase(6) cyclic exposure describe in 5.1.5.215.1.5.21 ExpZone.Cycle cyclic exposure cycle (immersion/air exposure,etc.)STRINGG107 95 (2015)3TABLE 1 ContinuedReferenceNumberField Name or Object Tag Description Field Type Category Set/Suggested Units/Column Definition5.
43、1.5.22 Process process relationexamples: pulp bleaching, sour gas production,solvent extraction, gas scrubbing, etc.STRING5.1.5.23 Application application relationexamples: heat exchanger tubing, fasteners,pumps, valves, scrubber ducting, etc.STRING5.1.5.24 AV Ratio ratio of specimen surface area to
44、 corrodentvolumeQUANT mm2/L, in.2/LMATERIAL IDENTIFICATIONreference numbers 5.1.6.1 through 5.1.6.6 arebasic fields for use in material identification indatabase. Refer to Guide E1338 on the identi-fication of Metals and Alloys in computerizedmaterial property databases.5.1.6.1 Matl.Class material c
45、lass STRING5.1.6.2 Matl.SubClass sub-division of class STRING5.1.6.3 Matl.SubSubClass finer sub-division of class STRING5.1.6.4 Matl.TradeName common name/trade name STRING5.1.6.5 Matl.UNSNo material designationUNS number STRING5.1.6.6 Matl.Spec specification/standard STRING5.1.6.7 Shape product sha
46、pe SET (1)pipe/tube(2) plate(3) sheet/strip(4) wire/rod/bar(5) otherdescribe in 5.1.6.85.1.6.8 Shape.Description description for (5) in 5.1.6.7 STRING5.1.6.9 ProdMethod product production method (1) extrusion(2) forging(3) casting(4) rolling(5) powder compaction(6) otherdescribe, in 5.1.6.105.1.6.10
47、 ProdMethod.Description description of (6) in 5.1.6.9 STRING5.1.6.11 Lot.ID heat/lot identification STRING5.1.6.12 Lot.Analysis heat/lot chemical analysis STRINGSPECIMEN IDENTIFICATION5.1.7.1 Specimen.Thickness specimen thickness QUANT mm, in.5.1.7.2 Specimen.Width specimen width/diameter QUANT mm,
48、in.5.1.7.3 Specimen.Length specimen length QUANT mm, in.5.1.7.4 Specimen.Area specimen surface area QUANT mm2,in.25.1.7.5 Density density QUANT kg/m3, lb/in.35.1.7.6 Weld welded specimen SET (1) Yyes(2) Nno5.1.7.7 Weld.Type type of weld (see section 5.1.7.8 for additionaldetail)SET (1) autogenous(2)
49、 matching filler(3) dissimilar metal weld5.1.7.8 Weld.Description weld detailsexamples: preheat, welding process, no. ofpasses, heat input, joint shape, cover gas, etc.5.1.7.9 Weld.Surface welds ground or machined SET (1) ground(2) machined(3) as deposited(4) glass bead blasted5.1.7.10 Thermomechanical thermomechanical condition SET (1) standard temperdescribe in 5.1.7.11(2) annealed(3) normalized(4) sensitized(5) as cold worked(6) as hot worked(7) aged(8) other H.T./processingdescribe in 5.1.7.115.1.7.11 Thermomechanical.Description desc
