ASTM G107-95

NOTICE: This standard has either been superseded and replaced by a new version or discontinued.
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Designation: G 107 – 95
Standard Guide for
Formats for Collection and Compilation of Corrosion Data
for Metals for Computerized Database Input
This standard is issued under the fixed designation G 107; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (e) indicates an editorial change since the last revision or reapproval.
1. Scope 3. Terminology
1.1 This guide defines the data categories and specific data 3.1 Definitions—For definitions of terms applicable to this
elements (fields) considered necessary to accommodate desired guide see Practice E 1314 and Terminology G 15.
search strategies and reliable data comparisons in computer-
4. Significance and Use
ized corrosion databases. The data entries are designed to
4.1 The guide is intended to facilitate the recording of
accommodate data relative to the basic forms of corrosion and
corrosion test results and does not imply or endorse any
to serve as guides for structuring multiple source database
compilations capable of assessing compatibility of metals and particular database design or schema. It provides a useful
reference to be consulted before initiating a corrosion test to be
alloys for a wide range of environments and exposure condi-
tions. sure plans are made to record all relevant data.
4.2 Corrosion tests are usually performed following a pre-
2. Referenced Documents
scribed test procedure that is often not a standard test method.
2.1 ASTM Standards: Most corrosion tests involve concurrent exposure of multiple
E 8 Test Methods for Tension Testing of Metallic Materials specimens of one or more materials (refer to 6.1.1).
E 527 Practice for Numbering Metals and Alloys (UNS) 4.3 This guide is designed to record data for individual
E 1314 Practice for Structuring Terminological Records specimens with groupings by separate tests (as contrasted to
Relating to Computerized Test Reporting and Materials separate test methods) as described in 4.2 and 6.1.1. Conse-
Designation Formats quently, some of the individual fields may apply to all of the
E 1338 Guide for the Identification of Metals and Alloys in specimens in a single test, while others must be repeated as
Computerized Material Property Databases often as necessary to record data for individual specimens.
G 1 Practice for Preparing, Cleaning, and Evaluating Cor- 4.4 The guidelines provided are designed for recording data
rosion Test Specimens for entry into computerized material performance databases.
G 15 Terminology Relating to Corrosion and Corrosion They may be useful for other applications where systematic
Testing recording of corrosion data is desired.
G 34 Test Method for Exfoliation Corrosion Susceptibility 4.5 Reliable comparisons of corrosion data from multiple
in 2XXX and 7XXX Series Aluminum Alloys (EXCO sources will be expedited if data are provided for as many of
Test) the listed fields as possible. Comparisons are possible where
G 46 Guide for Examination and Evaluation of Pitting data are limited, but some degree of uncertainty will be present.
Corrosion 4.6 Certain specialized corrosion tests may require addi-
G 49 Practice for Preparation and Use of Direct Tension tional data elements to fully characterize the data recorded.
Stress-Corrosion Test Specimens This guide does not preclude these additions. Other ASTM
G 78 Guide for Crevice Corrosion Testing of Iron-Base and guides for recording data from mechanical property tests may
Nickel-Base Stainless Alloys in Seawater and Other be helpful.
Chloride-Containing Aqueous Environments 4.7 This guide does not cover the recording of data from
electrochemical corrosion tests.
4.8 These material identification guidelines are compatible
This guide is under the jurisdiction of ASTM Committee G01 on Corrosion of
with Guidelines E 1338.
Metals and is the direct responsibility of Subcommittee G01.05 on Laboratory
Corrosion Tests.
5. Categorization of Corrosion Data
Current edition approved Dec. 10, 1995. Published February 1996. Originally
published as G 107 – 91. Last previous edition G 107 – 91.
5.1 This guide considers nine general categories for use in
Annual Book of ASTM Standards, Vol 03.01.
3 documenting corrosion data. Categories, with input examples,
Annual Book of ASTM Standards, Vol 01.01.
Annual Book of ASTM Standards, Vol 14.01. are as follows:
Annual Book of ASTM Standards, Vol 03.02.
Copyright © ASTM, 100 Barr Harbor Drive, West Conshohocken, PA 19428-2959, United States.
G 107
5.1.1 Test Identification—Unique code to identify groupings supplementary search requirements. This guide does not pre-
of multiple specimens exposed at the same time and under clude these additions.
identical conditions.
7. Data Entry Fields
5.1.2 Type of Test—Standardized, laboratory, field tests; test
relation to specific process or application (for example, sulfide 7.1 Data entry fields are listed in Table 1. The table contains
stress cracking test for sour gas production tubing). the following information:
5.1.3 Test Emphasis—Specific form of corrosion or degra- 7.1.1 The reference number is a unique number the first
three digits of which refer to the relevant paragraph numbers in
dation (for example, pitting, corrosion-fatigue, crevice corro-
sion, etc.). this guide.
7.1.2 The field name or object tag is a concise label for the
5.1.4 Environment—Generic description; identification,
concentration, and state of principal components; contami- field. Tags are made up of one or more character strings
separated by periods. The first character in each string must be
nants, etc.
5.1.5 Exposure Conditions—Duration, temperature, pH, hy- alphabetic (a–z, A–Z,”). Thereafter the characters may be
alphanumeric (a–z, A–Z,”, 0–9).
drodynamic conditions, aeration, etc.
5.1.6 Material Identification—Material class, subclass, and 7.1.2.1 Periods are used to separate subdivisions inherent in
the information, for example “Component.Name,” “Compo-
family, common name, standard designation, condition, manu-
facturing process, product form, etc. nent.Conc.”
7.1.2.2 Tags are case insensitive although mixed case is
5.1.7 Specimen Identification—Specimen number, size, ge-
ometry, surface condition, composition, properties. suggested for readability. Mixed case is used when a tag’s
5.1.8 Specimen Performance—Mass change, property meaning forms a single concept, for example “FlowRegime.”
change, performance relative to specific corrosion, or degrada- 7.1.3 The field description is a textual description of the
tion mechanism. field.
5.1.9 Data Source or Reference. 7.1.4 The field type describes the format and allowed
5.2 This guide permits supplementary notes to document contents for the field. The field may be one of the following
supplementary information considered important in interpret- types:
ing data. 7.1.4.1 String (STRING)—A string is an undifferentiated
series of characters. Strings may contain punctuation charac-
6. Data Searching
ters except for a tab, new line, or leading semicolon.
6.1 This guide considers data to accommodate searches for 7.1.4.2 Quantity (QUANT)—A quantity is a data aggregate
identifying and locating data and metadata in eight specific made of a real number and a unit. The last column of the table
areas as follows: gives suggested units for the field. Alternative units may be
6.1.1 Multiple specimens of one material included in same used.
test (that is, exposed in same or companion test rack exposed 7.1.4.3 Data (DATE)—A date is a string of eight numeric
under identical conditions in same or companion test vessel). characters encoding year, month, and day in the order
6.1.2 Different materials included in same test. YYYYMMDD.
6.1.3 Material evaluated by specific standard test methods 7.1.4.4 Time (TIME)—A time is a string of six numeric
(by standardized test number). characters encoding hour, minute and second in the order
6.1.4 Materials exposed to specific environments with en- HHMMSS.
vironments defined by generic description (for example, sour 7.1.4.5 Category Set (SET—A category set is a closed list of
gas) or by specific components (for example,
values for a particular field. A database uses an integer value to
hydrocarbon + H S). record the member of the category set. Category sets should
6.1.5 Specific materials, defined by class (for example,
not be used for quantities. Use the quantity type, instead. The
metals), subclass (for example, wrought aluminum), family last column of the table gives a list of acceptable values and
(for example, Al-Si alloys), standard designation (UNS No.,
their meaning for each category set field.
ASTM specification), or common name. 7.1.4.6 Tabular (TABLE)—A tabular field is made up of a
6.1.6 Specific application or process (for example, sour gas
group of values. The last column gives the title and type of
production tubing, pulp bleaching). each value.
6.1.7 Type of corrosion or degradation mechanism (for
8. Keywords
example, pitting, corrosion fatigue, etc.).
6.1.8 Results from a specific reference or source. 8.1 computerization; corrosion; data; database; material per-
6.2 Additional information may be required to facilitate formance; metal
TABLE 1 Standard Data Entry Fields for Corrosion Database Development
Reference
Field Name or Object Tag Description Field Type Category Set/Suggested Units/Column Definition
Number
5.1.1 TestNo individual test number to identify grouping of STRING
specimens tested concurrently. See
subsequent entries of test method
G 107
TABLE 1 Continued
Reference
Field Name or Object Tag Description Field Type Category Set/Suggested Units/Column Definition
Number
TYPE OF TEST
5.1.2.1 Standard standard test specification STRING
5.1.2.2 Location field or laboratory test SET (1) F - field
(2) L - Laboratory
5.1.2.3 Date date test started DATE
TEST EMPHASIS
5.1.3.1 CorrosionType type(s) of corrosion evaluated examples: general STRING
corrosion, stress corrosion, pitting, crevice
corrosion, hot or cold wall effects, fretting, stray
current, weld corrosion, corrosion-fatigue,
galvanic corrosion, microbiological corrosion
CHEMISTRY OF ENVIRONMENT
5.1.4.1 Environment generic description of environment STRING
5.1.4.2 Component component—common name STRING
5.1.4.3 Component.Registry chemical abstracts registry number STRING
5.1.4.4 Component.Conc concentration (liquids) QUANT g/L
5.1.4.5 Component.Press partial pressure (gases) QUANT N/m , psi
5.1.4.6 Component.Form component form SET (1) solid
(2) liquid
(3) gaseous
(4) aqueous liquid
(5) non-aqueous solutions or emulsions
5.1.4.7 IonicSpecies ionic species STRING
5.1.4.8 Inhibitor inhibitors STRING
Note: many environments contain multiple
components. Reference numbers 5.1.4.1
through 5.1.4.8 should be repeated for each
component and no restrictions should be
placed on the number of components to be
described for any given environment.
<<>>
EXPOSURE CONDITIONS
5.1.5.1 Duration exposure duration QUANT days
5.1.5.2 MinTemp temperature—min QUANT °C, °F
5.1.5.3 MaxTemp temperature—max QUANT °C, °F
5.1.5.4 AvgTemp temperature—av QUANT °C, °F
5.1.5.5 HeatTransfer heat transfer between specimen and SET (1) Y—yes
environment. If YES, describe conditions in (2) N—no
5.1.5.6
5.1.5.6 HeatTransfer.Description heat transfer conditions STRING
5.1.5.7 MaxPH pH—minimum QUANT
5.1.5.8 MinPH pH—maximum QUANT
5.1.5.9 AvgPH pH—avg QUANT
5.1.5.10 Alkalinity total alkalinity (total concentration of bases) QUANT moles/l
5.1.5.11 Acidity total acidity (total concentration of acids) QUANT moles/l
5.1.5.12 Conductivity conductivity QUANT mhos/m
5.1.5.13 Pressure pressure (absolute) QUANT Pa, psi
5.1.5.14 Velocity velocity QUANT m/s, ft/s
5.1.5.15 ReynoldsNo reynolds number QUANT
5.1.5.16 FlowRegime flow SET (1) none
(2) laminar
(3) turbulent
(4) forced convection
5.1.5.17 Geometry system geometry at test sample STRING
5.1.5.18 Sparging sparging SET (1) deaerated (vacuum, inert gas)
(2) none—less than saturated (open to air)
(3) air
(4) oxygen
(5) inert gas
5.1.5.19 Agitation agitation SET (1) none
(2) stirred
(3) shaken
(4) shaken but not bruised
5.1.5.20 ExpZone exposure zone SET (1) continuous immersion
(2) splash zone
(3) waterline
(4) condensate zone
(5) gaseous phase
(6) cyclic exposure describe in 5.1.5.21
5.1.5.21 ExpZone.Cycle cyclic exposure cycle (immersion/air exposure, STRING
etc.)
G 107
TABLE 1 Continued
Reference
Field Name or Object Tag Description Field Type Category Set/Suggested Units/Column Definition
Number
5.1.5.22 Process process relation STRING
examples: pulp bleaching, sour gas production,
solvent extraction, gas scrubbing, etc.
5.1.5.23 Application application relation STRING
examples: heat exchanger tubing, fasteners,
pumps, valves, scrubber ducting, etc.
2 2
5.1.5.24 AV Ratio ratio of specimen surface area to corrodent QUANT mm /L, in. /L
volume
MATERIAL IDENTIFICATION
reference numbers 5.1.6.1 through 5.1.6.6 are
basic fields for use in material identification in
database. Refer to Guide E 1338 on the
identification of Metals and Alloys in
computerized material property databases.
5.1.6.1 Matl.Class material class STRING
5.1.6.2 Matl.SubClass sub-division of class STRING
5.1.6.3 Matl.SubSubClass finer sub-division of class STRING
5.1.6.4 Matl.TradeName common name/trade name STRING
5.1.6.5 Matl.UNSNo material designation—UNS number STRING
5.1.6.6 Matl.Spec specification/standard STRING
5.1.6.7 Shape product shape SET (1)pipe/tube
(2) plate
(3) sheet/strip
(4) wire/rod/bar
(5) other—describe in 5.1.6.8
5.1.6.8 Shape.Description description for (5) in 5.1.6.7 STRING
5.1.6.9 ProdMethod product production method (1) extrusion
(2) forging
(3) casting
(4) rolling
(5) powder compaction
(6) other—describe, in 5.1.6.10
5.1.6.10 ProdMethod.Description description of (6) in 5.1.6.9 STRING
5.1.6.11 Lot.ID heat/lot identification STRING
5.1.6.12 Lot.Analysis heat/lot chemical analysis STRING
SPECIMEN IDENTIFICATION
5.1.7.1 Specimen.Thickness specimen thickness QUANT mm, in.
5.1.7.2 Specimen.Width specimen width/diameter QUANT mm, in.
5.1.7.3 Specimen.Length specimen length QUANT mm, in.
2 2
5.1.7.4 Specimen.Area specimen surface area QUANT mm , in.
3 3
5.1.7.5 Density density QUANT kg/m , lb/in.
5.1.7.6 Weld welded specimen SET (1) Y—yes
(2) N—no
5.1.7.7 Weld.Type type of weld (see section 5.1.7.8 for additional SET (1) autogenous
detail)
(2) matching filler
(3) dissimilar metal weld
5.1.7.8 Weld.Description weld details
examples: preheat, welding process, no. of
passes, heat input, joint shape, cover gas, etc.
5.1.7.9 Weld.Surface welds ground or ma
...