ASTM G107-95(2015)

NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
Contact ASTM International (www.astm.org) for the latest information
Designation: G107 − 95 (Reapproved 2015)
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 G107; 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 (´) indicates an editorial change since the last revision or reapproval.
1. Scope G46 Guide for Examination and Evaluation of Pitting Cor-
rosion
1.1 This guide covers the data categories and specific data
G49 Practice for Preparation and Use of Direct Tension
elements(fields)considerednecessarytoaccommodatedesired
Stress-Corrosion Test Specimens
search strategies and reliable data comparisons in computer-
G78 Guide for Crevice Corrosion Testing of Iron-Base and
ized corrosion databases. The data entries are designed to
Nickel-Base Stainless Alloys in Seawater and Other
accommodate data relative to the basic forms of corrosion and
Chloride-Containing Aqueous Environments
to serve as guides for structuring multiple source database
compilations capable of assessing compatibility of metals and
3. Terminology
alloys for a wide range of environments and exposure condi-
3.1 Definitions—For definitions of terms applicable to this
tions.
guide see Practice E1314 and Terminology G15.
2. Referenced Documents
4. Significance and Use
2.1 ASTM Standards:
4.1 The guide is intended to facilitate the recording of
E8 Test Methods for Tension Testing of Metallic Materials
corrosion test results and does not imply or endorse any
E399 Test Method for Linear-Elastic Plane-Strain Fracture
particular database design or schema. It provides a useful
Toughness K of Metallic Materials
Ic
reference to be consulted before initiating a corrosion test to be
E527 Practice for Numbering Metals and Alloys in the
sure plans are made to record all relevant data.
Unified Numbering System (UNS)
E647 Test Method for Measurement of Fatigue Crack 4.2 Corrosion tests are usually performed following a pre-
Growth Rates scribed test procedure that is often not a standard test method.
E1314 Practice for Structuring Terminological Records Re- Most corrosion tests involve concurrent exposure of multiple
lating to Computerized Test Reporting and Materials specimens of one or more materials (refer to 6.1.1).
Designation Formats (Withdrawn 2000)
4.3 This guide is designed to record data for individual
E1338 Guide for Identification of Metals and Alloys in
specimens with groupings by separate tests (as contrasted to
Computerized Material Property Databases
separate test methods) as described in 4.2 and 6.1.1.
G1 Practice for Preparing, Cleaning, and Evaluating Corro-
Consequently, some of the individual fields may apply to all of
sion Test Specimens
the specimens in a single test, while others must be repeated as
G15 Terminology Relating to Corrosion and Corrosion Test-
often as necessary to record data for individual specimens.
ing (Withdrawn 2010)
4.4 The guidelines provided are designed for recording data
G34 Test Method for Exfoliation Corrosion Susceptibility in
for entry into computerized material performance databases.
2XXX and 7XXX Series Aluminum Alloys (EXCO Test)
They may be useful for other applications where systematic
recording of corrosion data is desired.
This guide is under the jurisdiction ofASTM Committee G01 on Corrosion of
4.5 Reliable comparisons of corrosion data from multiple
Metals and is the direct responsibility of Subcommittee G01.05 on Laboratory
sources will be expedited if data are provided for as many of
Corrosion Tests.
the listed fields as possible. Comparisons are possible where
Current edition approved Nov. 1, 2015. Published December 2015. Originally
approved in 1991. Last previous edition approved in 2008 as G107–95(2008). DOI:
dataarelimited,butsomedegreeofuncertaintywillbepresent.
10.1520/G0107-95R15.
4.6 Certain specialized corrosion tests may require addi-
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
tional data elements to fully characterize the data recorded.
Standards volume information, refer to the standard’s Document Summary page on
This guide does not preclude these additions. Other ASTM
the ASTM website.
guides for recording data from mechanical property tests may
The last approved version of this historical standard is referenced on
www.astm.org. be helpful.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
G107 − 95 (2015)
4.7 This guide does not cover the recording of data from 6.1.7 Type of corrosion or degradation mechanism (for
electrochemical corrosion tests. example, pitting, corrosion fatigue, etc.).
6.1.8 Results from a specific reference or source.
4.8 These material identification guidelines are compatible
with Guide E1338.
6.2 Additional information may be required to facilitate
supplementary search requirements. This guide does not pre-
5. Categorization of Corrosion Data
clude these additions.
5.1 This guide considers nine general categories for use in
documenting corrosion data. Categories, with input examples,
7. Data Entry Fields
are as follows:
7.1 Data entry fields are listed in Table 1.The table contains
5.1.1 Test Identification—Unique code to identify groupings
the following information:
of multiple specimens exposed at the same time and under
7.1.1 The reference number is a unique number the first
identical conditions.
three digits of which refer to the relevant paragraph numbers in
5.1.2 Type of Test—Standardized, laboratory, field tests; test
this guide.
relation to specific process or application (for example, sulfide
7.1.2 The field name or object tag is a concise label for the
stress cracking test for sour gas production tubing).
field. Tags are made up of one or more character strings
5.1.3 Test Emphasis—Specific form of corrosion or degra-
separated by periods. The first character in each string must be
dation (for example, pitting, corrosion-fatigue, crevice
alphabetic (a–z, A–Z,”). Thereafter the characters may be
corrosion, etc.).
alphanumeric (a–z, A–Z,”, 0–9).
5.1.4 Environment—Generic description; identification,
7.1.2.1 Periods are used to separate subdivisions inherent in
concentration, and state of principal components;
the information, for example “Component.Name,” “Compo-
contaminants, etc.
nent.Conc.”
5.1.5 Exposure Conditions—Duration, temperature, pH, hy-
7.1.2.2 Tags are case insensitive although mixed case is
drodynamic conditions, aeration, etc.
suggested for readability. Mixed case is used when a tag’s
5.1.6 Material Identification—Material class, subclass, and
meaning forms a single concept, for example “FlowRegime.”
family, common name, standard designation, condition, manu-
7.1.3 The field description is a textual description of the
facturing process, product form, etc.
field.
5.1.7 Specimen Identification—Specimen number, size,
7.1.4 The field type describes the format and allowed
geometry, surface condition, composition, properties.
contents for the field. The field may be one of the following
5.1.8 Specimen Performance—Mass change, property
types:
change, performance relative to specific corrosion, or degrada-
7.1.4.1 String (STRING)—A string is an undifferentiated
tion mechanism.
series of characters. Strings may contain punctuation charac-
5.1.9 Data Source or Reference.
ters except for a tab, new line, or leading semicolon.
5.2 This guide permits supplementary notes to document
7.1.4.2 Quantity (QUANT)—A quantity is a data aggregate
supplementary information considered important in interpret-
made of a real number and a unit. The last column of the table
ing data.
gives suggested units for the field. Alternative units may be
used.
6. Data Searching
7.1.4.3 Data (DATE)—A date is a string of eight numeric
6.1 This guide considers data to accommodate searches for
characters encoding year, month, and day in the order
identifying and locating data and metadata in eight specific
YYYYMMDD.
areas as follows:
7.1.4.4 Time (TIME)—A time is a string of six numeric
6.1.1 Multiple specimens of one material included in same
characters encoding hour, minute and second in the order
test (that is, exposed in same or companion test rack exposed
HHMMSS.
under identical conditions in same or companion test vessel).
7.1.4.5 Category Set (SET)—A category set is a closed list
6.1.2 Different materials included in same test.
of values for a particular field.Adatabase uses an integer value
6.1.3 Material evaluated by specific standard test methods
to record the member of the category set. Category sets should
(by standardized test number).
not be used for quantities. Use the quantity type, instead. The
6.1.4 Materials exposed to specific environments with en-
last column of the table gives a list of acceptable values and
vironments defined by generic description (for example, sour
their meaning for each category set field.
gas) or by specific components (for example, hydrocar-
7.1.4.6 Tabular (TABLE)—A tabular field is made up of a
bon+H S).
group of values. The last column gives the title and type of
6.1.5 Specific materials, defined by class (for example,
each value.
metals), subclass (for example, wrought aluminum), family
(for example, Al-Si alloys), standard designation (UNS No.
8. Keywords
(see Practice E527), ASTM specification), or common name.
6.1.6 Specific application or process (for example, sour gas 8.1 computerization;corrosion;data;database;materialper-
production tubing, pulp bleaching). formance; metal
G107 − 95 (2015)
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 Test No individual test number to identify grouping of STRING
specimens tested concurrently. See
subsequent entries of test method
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.)
G107 − 95 (2015)
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 E1338 on the identi-
fication 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
...