ASTM G92-86(2003)

Standard Practice for Characterization of Atmospheric Test Sites

SIGNIFICANCE AND USE
This practice gives suggested procedures for characterization of atmospheric test sites. It can be useful to researchers, manufacturers, engineering firms, architects, and construction contractors to provide corrosion and environmental data, materials selection information, and a materials storage practice.
This practice does not give specific parameters for classifying the type of test site. PROCEDURES  Top
SCOPE
1.1 This practice gives suggested procedures for the characterization of atmospheric test sites. Continuous characterization can provide corrosion data, environmental data, or both which will signal changes in corrosivity of the atmospheric environment. This practice can also provide guidance for classification of future test sites.
1.2 Two methods are defined in this practice for the characterization of atmospheric test sites. The methods are identified as characterization Methods A and B. The preferred characterization technique would require using both Method A and B for concurrent data collection.
1.2.1 Method A is to be used when atmospheric corrosion is monitored on a continuing basis at a test site using specified materials and exposure configurations.
1.2.2 Method B is specified when atmospheric factors are monitored on a continuing basis.
1.3 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.

General Information

• Status: Historical
• Publication Date: 20-Nov-1986
• ICS: 19.040 - Environmental testing
• Technical Committee: G01 - Corrosion of Metals
• Drafting Committee: G01.04 - Corrosion of Metals in Natural Atmospheric and Aqueous Environments

Relations

• Replaces: ASTM G92-86(1997)e1 - Standard Practice for Characterization of Atmospheric Test Sites
• Effective Date: 21-Nov-1986
• Replaced By: ASTM G92-86(2010) - Standard Practice for Characterization of Atmospheric Test Sites
• Effective Date: 01-Sep-2010
• Referred By: ASTM G112-22 - Standard Guide for Conducting Exfoliation Corrosion Tests in Aluminum Alloys
• Effective Date: 21-Nov-1986
• Referred By: ASTM G50-20 - Standard Practice for Conducting Atmospheric Corrosion Tests on Metals
• Effective Date: 21-Nov-1986
• Referred By: ASTM G140-02(2019) - Standard Test Method for Determining Atmospheric Chloride Deposition Rate by Wet Candle Method
• Effective Date: 21-Nov-1986
• Referred By: ASTM G116-99(2020)e1 - Standard Practice for Conducting Wire-on-Bolt Test for Atmospheric Galvanic Corrosion
• Effective Date: 21-Nov-1986

Standards Content (Sample)

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: G92 – 86 (Reapproved 2003)
Standard Practice for
1
Characterization of Atmospheric Test Sites
This standard is issued under the fixed designation G92; the number immediately following the designation indicates the year of original
adoption or, in the case of revision, the year of last revision.Anumber in parentheses indicates the year of last reapproval.Asuperscript
epsilon (´) indicates an editorial change since the last revision or reapproval.
1. Scope G84 Practice for Measurement of Time-of-Wetness on Sur-
faces Exposed to Wetting Conditions as in Atmospheric
1.1 This practice gives suggested procedures for the char-
Corrosion Testing
acterization of atmospheric test sites. Continuous characteri-
G91 Practice for Monitoring Atmospheric SO Using the
ization can provide corrosion data, environmental data, or both 2
Sulfation Plate Technique
which will signal changes in corrosivity of the atmospheric
environment. This practice can also provide guidance for
3. Summary of Methods
classification of future test sites.
3.1 Characterization Method A is to be used when atmo-
1.2 Two methods are defined in this practice for the char-
spheric corrosion data are to be obtained.
acterization of atmospheric test sites. The methods are identi-
3.1.1 Corrosion tests to measure the corrosivity of the test
fied as characterization Methods A and B. The preferred
site should follow the procedure established by Practice G50.
characterization technique would require using both MethodA
Additional special instructions are identified in this procedure
and B for concurrent data collection.
relating to types of materials for corrosion characterization
1.2.1 MethodAis to be used when atmospheric corrosion is
tests, time of test exposure, positioning of test specimens,
monitored on a continuing basis at a test site using specified
removal of test specimens and proper identification, cleaning
materials and exposure configurations.
practices, and reporting of data.
1.2.2 Method B is specified when atmospheric factors are
3.2 Characterization Method B is to be used when atmo-
monitored on a continuing basis.
spheric climatological factors influencing the corrosion of
1.3 This standard does not purport to address all of the
metals are to be monitored.
safety concerns, if any, associated with its use. It is the
3.2.1 Several atmospheric factors which have been identi-
responsibility of the user of this standard to establish appro-
fied as having significant bearing on the corrosion of metals
priate safety and health practices and determine the applica-
include, but are not limited to, sulfur dioxide, chlorides,
bility of regulatory limitations prior to use.
temperature, humidity, precipitation, time of wetness, and
2. Referenced Documents atmospheric particulate matter.
2
3.3 The preferred technique utilizes both Methods A and B
2.1 ASTM Standards:
for concurrent data to be collected.
A36/A36M Specification for Carbon Structural Steel
3.3.1 Should either Method A or B be singled out as the
B6 Specification for Zinc
primary technique to be used on a continuing basis, both
G1 Practice for Preparing, Cleaning, and Evaluating Corro-
should be used at some point in time to establish a data base.
sion Test Specimens
The availability of computerized weather stations greatly
G50 Practice for Conducting Atmospheric Corrosion Tests
facilitates the collection of reliable atmospheric data.
on Metals
4. Significance and Use
1
This practice is under the jurisdiction of ASTM Committee G01 on Corrosion
4.1 This practice gives suggested procedures for character-
of Metals and is the direct responsibility of Subcommittee G01.04 on Atmospheric
ization of atmospheric test sites. It can be useful to researchers,
Corrosion.
manufacturers, engineering firms, architects, and construction
Current edition approved Nov. 21, 1986. Published January 1987. DOI: 10.1520/
G0092-86R03.
contractors to provide corrosion and environmental data, ma-
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
terials selection information, and a materials storage practice.
contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM
4.2 This practice does not give specific parameters for
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website. classifying the type of test site.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
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G92 – 86 (2003)
PROCEDURES 5.2.2 An identifying code should be assigned to each
specimen. Locating a permanent code on each test specimen
5. Method A can be accomplished easily by using a code template (Fig. 1).
5.2.2.1 Pre-assignment of codes for a definite test period is
5.1 Materials:
suggested. After a
...