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ASTM G60-01(2018)

(Practice)

Standard Practice for Conducting Cyclic Humidity Exposures

Standard Practice for Conducting Cyclic Humidity Exposures

SIGNIFICANCE AND USE
3.1 The procedure described is used to observe the behavior of steels under exposure conditions that retard the formation of a protective type of rust. It is also used to evaluate seal coat on insulation.  
3.2 This practice should not be used to rank steels that form a protective type of rust under atmospheric exposure conditions.
SCOPE
1.1 This practice covers procedures for conducting cyclic humidity exposures with a corrosive dip.2 It sets forth the conditions required in cyclic humidity testing.  
1.2 This practice does not prescribe the type of exposure specimen or exposure periods nor the interpretation to be given to the results.  
1.3 The values stated in SI units are to be regarded as standard. The values given in parentheses are for information only.  
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 consult and establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use.  
1.5 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

General Information

Status
Published
Publication Date
30-Sep-2018
ICS
19.040 - Environmental testing
Technical Committee
G01 - Corrosion of Metals
Drafting Committee
G01.05 - Laboratory Corrosion Tests
Current Stage
Ref Project

Relations

Replaces
ASTM G60-01(2013) - Standard Practice for Conducting Cyclic Humidity Exposures
Effective Date
01-Oct-2018
Refers
ASTM G1-03(2011) - Standard Practice for Preparing, Cleaning, and Evaluating Corrosion Test Specimens
Effective Date
01-Dec-2011
Refers
ASTM D1193-06 - Standard Specification for Reagent Water
Effective Date
01-Mar-2006
Refers
ASTM G1-03 - Standard Practice for Preparing, Cleaning, and Evaluating Corrosion Test Specimens
Effective Date
01-Oct-2003
Refers
ASTM D1193-99e1 - Standard Specification for Reagent Water
Effective Date
10-Feb-1999
Refers
ASTM D1193-99 - Standard Specification for Reagent Water
Effective Date
10-Feb-1999
Refers
ASTM G1-90(1999)e1 - Standard Practice for Preparing, Cleaning, and Evaluating Corrosion Test Specimens
Effective Date
01-Jan-1999
Referred By
ASTM G198-17 - Standard Test Method for Determining the Relative Corrosion Performance of Driven Fasteners in Contact with Treated Wood
Effective Date
01-Oct-2018
Referred By
ASTM D3794-22 - Standard Guide for Testing Coil Coatings
Effective Date
01-Oct-2018

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ASTM G60-01(2018) - Standard Practice for Conducting Cyclic Humidity ExposuresASTM G60-01(2018) - Standard Practice for Conducting Cyclic Humidity Exposures
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ASTM G60-01(2018) - Standard Practice for Conducting Cyclic Humidity Exposures
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This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the
Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
Designation: G60 − 01 (Reapproved 2018)
Standard Practice for
Conducting Cyclic Humidity Exposures
This standard is issued under the fixed designation G60; 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 3. Significance and Use
1.1 This practice covers procedures for conducting cyclic 3.1 The procedure described is used to observe the behavior
humidity exposures with a corrosive dip. It sets forth the of steels under exposure conditions that retard the formation of
conditions required in cyclic humidity testing. a protective type of rust. It is also used to evaluate seal coat on
insulation.
1.2 This practice does not prescribe the type of exposure
specimen or exposure periods nor the interpretation to be given 3.2 This practice should not be used to rank steels that form
to the results. a protective type of rust under atmospheric exposure condi-
tions.
1.3 The values stated in SI units are to be regarded as
standard. The values given in parentheses are for information
4. Apparatus
only.
4.1 The apparatus required for cyclic humidity exposures
1.4 This standard does not purport to address all of the
consists of a test chamber, provisions for heating the chamber,
safety concerns, if any, associated with its use. It is the
a humidifying tower, a drying train, a dip mechanism, provi-
responsibility of the user of this standard to consult and
sions for introducing and draining the solution, a supply of
establish appropriate safety, health, and environmental prac-
compressed air, specimen supports, and necessary means of
tices and determine the applicability of regulatory limitations
control.
prior to use.
4.2 The size and detailed construction of the apparatus are
1.5 This international standard was developed in accor-
optional, provided the conditions obtained meet the require-
dance with internationally recognized principles on standard-
ments of this practice.
ization established in the Decision on Principles for the
Development of International Standards, Guides and Recom- 4.3 AschematicdiagramoftheapparatusisshowninFig.1.
mendations issued by the World Trade Organization Technical
4.4 The apparatus should be capable of providing an 8-h
Barriers to Trade (TBT) Committee.
humidity cycle three times per day, as shown in Fig. 2, and a
dip cycle once a day.
2. Referenced Documents
4.4.1 The cyclic variation of humidity can be obtained by
2.1 ASTM Standards:
variation of the temperature of the water in the humidifying
D1193 Specification for Reagent Water
tower. The temperature of the water is cycled thermostatically
G1 Practice for Preparing, Cleaning, and Evaluating Corro-
such that the relative humidity of air bubbling through the
sion Test Specimens
water at a minimum rate of 1 L⁄min (0.04 ft /min) will vary
between 100 and 50 % when the temperature of the air in the
test chamber is brought to 52 6 1°C (125 6 2°F).
This practice is under the jurisdiction of ASTM Committee G01 on Corrosion
4.4.2 The range of relative humidity can be extended by
of Metals and is the direct responsibility of Subcommittee G01.05 on Laboratory
adding a drying period to the humidity cycle described above.
Corrosion Tests.
Current edition approved Oct. 1, 2018. Published November 2018. Originally The minimum relative humidity shall be ≤20 % and the
approved in 1979. Last previous edition approved in 2013 as G60 – 01 (2013). DOI:
maximum relative humidity shall be ≥95 % for each cycle.
10.1520/G0060-01R18.
4.4.3 Drops of solution which accumulate on the ceiling or
Opinsky, A. J., Thomson, R. F., and Boegehold, A. L., “A Cyclic Humidity
cover of the chamber shall not be permitted to fall on the
Accelerated Corrosion Test for Sheet Steel,” ASTM Bulletin, January 1953.
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
specimens being exposed.
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
NOTE 1—Instruments to continuously record temperature and humidity
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website. are not mandatory, but these provide the most reliable and economical
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
G60 − 01 (2018)
FIG. 1 Main Parts of the Cyclic Humidity Corrosion Exposure Apparatus (Schematic)
FIG. 2 Humidity Cycle (Schematic)
way of recording such information. In the absence of such
4.6.1 The specimen-supporting device should not be af-
instrumentation, temperature and humidity measurement shall be made, at
fected by or cause contamination of the dip solution. See Note
least twice a day, at the maximum and minimum humidity in a cycle.
2.
4.5 Materials of Construction:
4.6.2 The method of supporting specimens will vary with
4.5.1 The test chamber should be made of inert materials
the apparatus used for conducting the tests, but should be
suchasplastics,glass,ormetalslinedwithimperviousplastics,
designed to insulate the specimens from each other physically
rubber or epoxy-type materials, or materials exhibiting equiva-
andelectricallyandtoinsulatethespecimensfromanymetallic
lent corrosion resistance. Material of construction shall be such
container or supporting device used within the apparatus. The
that it will not affect the corrosiveness of the exposure
specimens shall not contact any material capable of acting as a
atmosphere.
wick.
4.5.2 Thedipsolutioncontainershouldnotbeaffectedbyor
NOTE 2—Suitable materials for the construction or coating of racks and
cause contamination of the dip solution.
supports are glass, rubber, plastic, or suitably coated wood. Bare metal
4.6 Specimen Supports: shall not be used. Specimens shall preferably be supported from th
...

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This practice establishes the standard procedures for evaluating the resistance of pre-stressed prepainted metal panels to cracking and loss of adhesion, or both, after accelerated aging by boiling water. This method shall require the use of boiling water bath, 10x magnifier, Scotch #610 adhesive tape or its equivalent, and deionized or other water as reagent.
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  • Standard
    4 pages
    English language
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ASTM
ASTM G128/G128M-15(2023)(Guide)
Standard Guide for Control of Hazards and Risks in Oxygen Enriched Systems

SIGNIFICANCE AND USE
4.1 The purpose of this guide is to introduce the hazards and risks associated with oxygen-enriched systems. This guide explains common hazards that often are overlooked. It provides an overview of the standards and documents produced by ASTM Committee G04 and other knowledgable sources as well as their uses. It does not highlight standard test methods that support the use of these practices. Table 1 provides a graphic representation of the relationship of ASTM G04 standards. Table 2 provides a list of standards published by ASTM and other organizations.  
4.2 The standards discussed here focus on reducing the hazards associated with the use of oxygen. In general, they are not directly applicable to process reactors in which the deliberate reaction of materials with oxygen is sought, as in burners, bleachers, or bubblers. Other ASTM Committees and products (such as the CHETAH program5) and other outside groups are more pertinent for these.  
4.3 This guide is not intended as a specification to establish practices for the safe use of oxygen. The documents discussed here do not purport to contain all the information needed to design and operate an oxygen-enriched system safely. The control of oxygen hazards has not been reduced to handbook procedures, and the tactics for using oxygen are not simple. Rather, they require the application of sound technical judgment and experience. Oxygen users should obtain assistance from qualified technical personnel to design systems and operating practices for the safe use of oxygen in their specific applications.
SCOPE
1.1 This guide covers an overview of the work of ASTM Committee G04 on Compatibility and Sensitivity of Materials in Oxygen-Enriched Atmospheres. It is a starting point for those asking the question: “What are the risks associated with my use of oxygen?” This guide is an introduction to the unique concerns that must be addressed in the handling of oxygen. The principal hazard is the prospect of ignition with resultant fire, explosion, or both. All fluid systems require design considerations, such as adequate strength, corrosion resistance, fatigue resistance, and pressure safety relief. In addition to these design considerations, one must also consider the ignition mechanisms that are specific to an oxygen-enriched system. This guide outlines these ignition mechanisms and the approach to reducing the risks.  
1.2 This guide also lists several of the recognized causes of oxygen system fires and describes the methods available to prevent them. Sources of information about the oxygen hazard and its control are listed and summarized. The principal focus is on Guides G63, G88, Practice G93, and Guide G94. Useful documentation from other resources and literature is also cited.  
Note 1: This guide is an outgrowth of an earlier (1988) Committee G04 videotape adjunct entitled Oxygen Safety and a related paper by Koch2 that focused on the recognized ignition source of adiabatic compression as one of the more significant but often overlooked causes of oxygen fires. This guide recapitulates and updates material in the videotape and paper.  
1.3 The values stated in either SI units or inch-pound units are to be regarded separately as standard. The values stated in each system are not necessarily exact equivalents; therefore, to ensure conformance with the standard, each system shall be used independently of the other, and values from the two systems shall not be combined.  
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, health, and environmental practices and determine the applicability of regulatory limitations prior to use. For specific precautionary statements see Sections 8 and 11.  
Note 2: ASTM takes no position respecting the validity of any evaluation methods asserted in connection with any ite...

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