ASTM C1617-19
(Practice)Standard Practice for Quantitative Accelerated Laboratory Evaluation of Extraction Solutions Containing Ions Leached from Thermal Insulation on Aqueous Corrosion of Metals
Standard Practice for Quantitative Accelerated Laboratory Evaluation of Extraction Solutions Containing Ions Leached from Thermal Insulation on Aqueous Corrosion of Metals
SIGNIFICANCE AND USE
5.1 Results from this accelerated corrosion test shall not be considered as an indicator of the useful life of the metal equipment. Many factors need consideration for applicability to specific circumstances. Refer to Guide C1696 and Practice G31 for additional information.
5.2 Corrosion associated with insulation is an important concern for insulation manufacturers, specification writers, designers, contractors, users and operators of the equipment. Some material specifications contain test methods (or reference test methods contained in other material specifications), for use in evaluating the insulation with regard to the corrosion of steel, copper, and aluminum. In some cases these tests are not applicable or effective and have not been evaluated for precision and bias.
5.3 A properly selected, installed, and maintained insulation system will reduce the corrosion that often occurs on an un-insulated structure. However, when the protective weather-resistant covering of an insulation system fails, the conditions for the aqueous environment necessary for corrosion under insulation (CUI) often develop. It is possible the insulation contains, collects, or concentrates corrosive agents, or a combination thereof, often found in industrial and coastal environments. If water is not present, these electrolytes cannot migrate to the metal surface. The electrochemical reaction resulting in the aqueous corrosion of metal surfaces cannot take place in the absence of water and electrolytes. Additional environmental factors contributing to increased corrosion rates are oxygen, and elevated-temperature (near boiling point).
5.4 Chlorides and other corrosive ions are common to many environments. The primary corrosion preventative is to protect insulation and metal from contamination and moisture. Insulation covers, jackets, and metal coating of various kinds are often used to prevent water infiltration and contact with the metal.
5.5 This procedure can be used to eval...
SCOPE
1.1 This practice covers procedures for a quantitative accelerated laboratory evaluation of the influence of extraction solutions containing ions leached from thermal insulation on the aqueous corrosion of metals. The primary intent of the practice is for use with thermal insulation and associated materials that contribute to, or alternatively inhibit, the aqueous corrosion of different types and grades of metals due to soluble ions that are leached by water from within the insulation. The quantitative evaluation criteria are Mass Loss Corrosion Rate (MLCR) expressed in mils per year determined from the weight loss due to corrosion of exposed metal coupons after they are cleaned.
1.2 This practice cannot cover all possible field conditions that contribute to aqueous corrosion. The intent is to provide an accelerated means to obtain a non-subjective numeric value for judging the potential contribution to the corrosion of metals that can come from ions contained in thermal insulation materials or other experimental solutions. The calculated numeric value is the mass loss corrosion rate. This calculation is based on general corrosion spread equally over the test duration and the exposed area of the experimental cells created for the test. Corrosion found in field situations and this accelerated test also involves pitting and edge effects and the rate changes over time.
1.3 The insulation extraction solutions prepared for use in the test can be altered by the addition of corrosive ions to the solutions to simulate contamination from an external source. Ions expected to provide corrosion inhibition can be added to investigate their inhibitory effect.
1.4 Prepared laboratory ionic solutions are used as reference solutions and controls, to provide a means of calibration and comparison.2
1.5 Other liquids can be tested for their potential corrosiveness including cooling tower water, boiler feed, and chemical stocks. ...
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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: C1617 − 19
Standard Practice for
Quantitative Accelerated Laboratory Evaluation of
Extraction Solutions Containing Ions Leached from Thermal
1
Insulation on Aqueous Corrosion of Metals
This standard is issued under the fixed designation C1617; 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.A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
1. Scope 1.4 Preparedlaboratoryionicsolutionsareusedasreference
solutions and controls, to provide a means of calibration and
1.1 This practice covers procedures for a quantitative accel-
2
comparison.
erated laboratory evaluation of the influence of extraction
1.5 Other liquids can be tested for their potential corrosive-
solutions containing ions leached from thermal insulation on
ness including cooling tower water, boiler feed, and chemical
the aqueous corrosion of metals. The primary intent of the
stocks. Added chemical inhibitors or protective coatings ap-
practice is for use with thermal insulation and associated
plied to the metal can also be evaluated using the general
materialsthatcontributeto,oralternativelyinhibit,theaqueous
guidelines of the practice.
corrosionofdifferenttypesandgradesofmetalsduetosoluble
ions that are leached by water from within the insulation. The
1.6 Thevaluesstatedininch-poundunitsaretoberegarded
quantitative evaluation criteria are Mass Loss Corrosion Rate
as standard. The values given in parentheses are mathematical
(MLCR) expressed in mils per year determined from the
conversions to SI units that are provided for information only
weight loss due to corrosion of exposed metal coupons after
and are not considered standard.
they are cleaned.
1.7 This standard does not purport to address all of the
safety concerns, if any, associated with its use. It is the
1.2 This practice cannot cover all possible field conditions
responsibility of the user of this standard to establish appro-
thatcontributetoaqueouscorrosion.Theintentistoprovidean
priate safety, health, and environmental practices and deter-
acceleratedmeanstoobtainanon-subjectivenumericvaluefor
mine the applicability of regulatory limitations prior to use.
judging the potential contribution to the corrosion of metals
1.8 This international standard was developed in accor-
that can come from ions contained in thermal insulation
dance with internationally recognized principles on standard-
materials or other experimental solutions. The calculated
ization established in the Decision on Principles for the
numeric value is the mass loss corrosion rate. This calculation
Development of International Standards, Guides and Recom-
is based on general corrosion spread equally over the test
mendations issued by the World Trade Organization Technical
durationandtheexposedareaoftheexperimentalcellscreated
Barriers to Trade (TBT) Committee.
for the test. Corrosion found in field situations and this
accelerated test also involves pitting and edge effects and the
2. Referenced Documents
rate changes over time.
3
2.1 ASTM Standards:
1.3 The insulation extraction solutions prepared for use in
A53/A53MSpecification for Pipe, Steel, Black and Hot-
the test can be altered by the addition of corrosive ions to the
Dipped, Zinc-Coated, Welded and Seamless
solutions to simulate contamination from an external source.
Ions expected to provide corrosion inhibition can be added to
investigate their inhibitory effect.
2
The Uncertainty Test data have been moved to Appendix X4 because they are
based on data obtained using laboratory fabricated old style test coupons. The
precision and bias section, using the current practice of purchased test coupons,
1
This practice is under the jurisdiction of ASTM Committee C16 on Thermal replaces this uncertainty data. The Uncertainty Test data is preserved (for historical
InsulationandisthedirectresponsibilityofSubcommitteeC16.31onChemicaland purposes).
3
Physical Properties. For referenced ASTM standards, visit the ASTM website, www.astm.org, or
Current edition approved May 1, 2019. Published June 2019. Originally contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
approved in 2005. Last previous edition approved in 2018 as C1617–18a. DOI: Standards volume information, refer to the standard’s Document Summary page on
10.1520/C1617-19. the ASTM website.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1
---------------------- Page: 1 ----------------------
C1617 − 1
...
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: C1617 − 18a C1617 − 19
Standard Practice for
Quantitative Accelerated Laboratory Evaluation of
Extraction Solutions Containing Ions Leached from Thermal
1
Insulation on Aqueous Corrosion of Metals
This standard is issued under the fixed designation C1617; 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 covers procedures for a quantitative accelerated laboratory evaluation of the influence of extraction solutions
containing ions leached from thermal insulation on the aqueous corrosion of metals. The primary intent of the practice is for use
with thermal insulation and associated materials that contribute to, or alternatively inhibit, the aqueous corrosion of different types
and grades of metals due to soluble ions that are leached by water from within the insulation. The quantitative evaluation criteria
are Mass Loss Corrosion Rate (MLCR) expressed in mils per year determined from the weight loss due to corrosion of exposed
metal coupons after they are cleaned.
1.2 The insulation extraction solutions prepared for use in the test can be altered by the addition of corrosive ions to the solutions
to simulate contamination from an external source. Ions expected to provide corrosion inhibition can be added to investigate their
inhibitory effect.
1.3 Prepared laboratory ionic solutions are used as reference solutions and controls, to provide a means of calibration and
comparison. See Fig. 1 and Table 1.
1.4 Other liquids can be tested for their potential corrosiveness including cooling tower water, boiler feed, and chemical stocks.
Added chemical inhibitors or protective coatings applied to the metal can also be evaluated using the general guidelines of the
practice.
1.2 This practice cannot cover all possible field conditions that contribute to aqueous corrosion. The intent is to provide an
accelerated means to obtain a non-subjective numeric value for judging the potential contribution to the corrosion of metals that
can come from ions contained in thermal insulation materials or other experimental solutions. The calculated numeric value is the
mass loss corrosion rate. This calculation is based on general corrosion spread equally over the test duration and the exposed area
of the experimental cells created for the test. Corrosion found in field situations and this accelerated test also involves pitting and
edge effects and the rate changes over time.
1.3 The insulation extraction solutions prepared for use in the test can be altered by the addition of corrosive ions to the solutions
to simulate contamination from an external source. Ions expected to provide corrosion inhibition can be added to investigate their
inhibitory effect.
1.4 Prepared laboratory ionic solutions are used as reference solutions and controls, to provide a means of calibration and
2
comparison.
1.5 Other liquids can be tested for their potential corrosiveness including cooling tower water, boiler feed, and chemical stocks.
Added chemical inhibitors or protective coatings applied to the metal can also be evaluated using the general guidelines of the
practice.
1.6 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical
conversions to SI units that are provided for information only and are not considered standard.
1
This practice is under the jurisdiction of ASTM Committee C16 on Thermal Insulation and is the direct responsibility of Subcommittee C16.31 on Chemical and Physical
Properties.
Current edition approved Sept. 1, 2018May 1, 2019. Published October 2018June 2019. Originally approved in 2005. Last previous edition approved in 2018 as
C1617 – 18.C1617 – 18a. DOI: 10.1520/C1617-18A.10.1520/C1617-19.
2
The Uncertainty Test data have been moved to Appendix X4 because they are based on data obtained using laboratory fabricated old style test coupons. The precision
and bias section, using the current practice of purchased test coupons, replaces this uncertainty data. The Uncertainty Test data is preserved (for historical purposes).
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1
---------------------- Page: 1 ----------------------
C1617 − 19
1.7 This standard does not purport to address
...
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