ASTM G92-86(2015)

Standard Practice for Characterization of Atmospheric Test Sites

SIGNIFICANCE AND USE
4.1 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.  
4.2 This practice does not give specific parameters for classifying the type of test site.
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 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.  
1.4 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: 31-Oct-2015
• ICS: 19.040 - Environmental testing
• Technical Committee: G01 - Corrosion of Metals
• Drafting Committee: G01.04 - Corrosion of Metals in Natural Atmospheric and Aqueous Environments

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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.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 2015)
Standard Practice for
1
Characterization of Atmospheric Test Sites
ThisstandardisissuedunderthefixeddesignationG92;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginal
adoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscript
epsilon (´) indicates an editorial change since the last revision or reapproval.
1. Scope G84Practice 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 characteriza-
G91Practice for Monitoring Atmospheric SO Deposition
tion can provide corrosion data, environmental data, or both 2
Rate for Atmospheric Corrosivity Evaluation
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.
1.2 Two methods are defined in this practice for the char-
3.1 Characterization Method A is to be used when atmo-
acterization of atmospheric test sites. The methods are identi-
spheric corrosion data are to be obtained.
fied as characterization Methods A and B. The preferred
3.1.1 Corrosion tests to measure the corrosivity of the test
characterization technique would require using both MethodA
site should follow the procedure established by Practice G50.
and B for concurrent data collection.
Additional special instructions are identified in this procedure
1.2.1 MethodAistobeusedwhenatmosphericcorrosionis
relating to types of materials for corrosion characterization
monitored on a continuing basis at a test site using specified
tests, time of test exposure, positioning of test specimens,
materials and exposure configurations.
removal of test specimens and proper identification, cleaning
1.2.2 Method B is specified when atmospheric factors are
practices, and reporting of data.
monitored on a continuing basis.
3.2 Characterization Method B is to be used when atmo-
1.3 The values stated in SI units are to be regarded as
spheric climatological factors influencing the corrosion of
standard. No other units of measurement are included in this
metals are to be monitored.
standard.
3.2.1 Several atmospheric factors which have been identi-
1.4 This standard does not purport to address all of the
fied as having significant bearing on the corrosion of metals
safety concerns, if any, associated with its use. It is the
include, but are not limited to, sulfur dioxide, chlorides,
responsibility of the user of this standard to establish appro-
temperature, humidity, precipitation, time of wetness, and
priate safety and health practices and determine the applica-
atmospheric particulate matter.
bility of regulatory limitations prior to use.
3.3 The preferred technique utilizes both Methods A and B
2. Referenced Documents
for concurrent data to be collected.
2
2.1 ASTM Standards:
3.3.1 Should either Method A or B be singled out as the
A36/A36MSpecification for Carbon Structural Steel
primary technique to be used on a continuing basis, both
B6Specification for Zinc
should be used at some point in time to establish a data base.
G1Practice for Preparing, Cleaning, and Evaluating Corro-
The availability of computerized weather stations greatly
sion Test Specimens
facilitates the collection of reliable atmospheric data.
G50Practice for Conducting Atmospheric Corrosion Tests
on Metals
4. Significance and Use
4.1 This practice gives suggested procedures for character-
1
This practice is under the jurisdiction ofASTM Committee G01 on Corrosion
izationofatmospherictestsites.Itcanbeusefultoresearchers,
of Metals and is the direct responsibility of Subcommittee G01.04 on Atmospheric
Corrosion.
manufacturers, engineering firms, architects, and construction
CurrenteditionapprovedNov.1,2015.PublishedDecember2015.Lastprevious
contractors to provide corrosion and environmental data, ma-
edition approved in 2010 as G92–86(2010). DOI: 10.1520/G0092-86R15.
2 terials selection information, and a materials storage practice.
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
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
1

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G92−86 (2015)
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 usin
...

This document is not an ASTM standard and is intended only to provide the user of an ASTM standard an indication of what changes have been made to the previous version. Because
it may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current version
of the standard as published by ASTM is to be considered the official document.
Designation: G92 − 86 (Reapproved 2010) G92 − 86 (Reapproved 2015)
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. 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
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 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.
1.4 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.
2. Referenced Documents
2
2.1 ASTM Standards:
A36/A36M Specification for Carbon Structural Steel
B6 Specification for Zinc
G1 Practice for Preparing, Cleaning, and Evaluating Corrosion Test Specimens
G50 Practice for Conducting Atmospheric Corrosion Tests on Metals
G84 Practice for Measurement of Time-of-Wetness on Surfaces Exposed to Wetting Conditions as in Atmospheric Corrosion
Testing
G91 Practice for Monitoring Atmospheric SO Deposition Rate for Atmospheric Corrosivity Evaluation
2
3. Summary of Methods
3.1 Characterization Method A is to be used when atmospheric corrosion data are to be obtained.
3.1.1 Corrosion tests to measure the corrosivity of the test site should follow the procedure established by Practice G50.
Additional special instructions are identified in this procedure relating to types of materials for corrosion characterization tests,
time of test exposure, positioning of test specimens, removal of test specimens and proper identification, cleaning practices, and
reporting of data.
3.2 Characterization Method B is to be used when atmospheric climatological factors influencing the corrosion of metals are
to be monitored.
3.2.1 Several atmospheric factors which have been identified as having significant bearing on the corrosion of metals include,
but are not limited to, sulfur dioxide, chlorides, temperature, humidity, precipitation, time of wetness, and atmospheric particulate
matter.
3.3 The preferred technique utilizes both Methods A and B for concurrent data to be collected.
1
This practice is under the jurisdiction of ASTM Committee G01 on Corrosion of Metals and is the direct responsibility of Subcommittee G01.04 on Atmospheric
Corrosion.
Current edition approved Sept. 1, 2010Nov. 1, 2015. Published May 2011December 2015. Last previous edition approved in 20032010 as G92–86(2003).G92–86(2010).
DOI: 10.1520/G0092-86R10.10.1520/G0092-86R15.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM Standards
volume information, refer to the standard’s Document Summary page on the ASTM website.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1

---------------------- Page: 1 ----------------------
G92 − 86 (2015)
3.3.1 Should either Method A or B be singled out as the primary technique to be used on a continuing basis, both should be
used at some point in time to establish a data base. The availability of computerized weather stations greatly facilitates the
collection of reliable atmospheric data.
4. Significance and Use
4.1 This practice gives suggested procedures for characterization of atmospheric test sites. It can be useful to researchers,
manufacturers, engineer
...