ASTM C1617-05
(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
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) 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 standard solutions are used as reference solutions and controls, to provide a means of calibration and comparison. See Fig 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.
1.5 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.
1.6 The measurement values stated in inch-pound units are to be regarded as standard.
1.7 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.
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Designation: C1617 – 05
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 is based on general corrosion spread equally over the test
durationandtheexposedareaoftheexperimentalcellscreated
1.1 This practice covers procedures for a quantitative accel-
for the test. Corrosion found in field situations and this
erated laboratory evaluation of the influence of extraction
accelerated test also involves pitting and edge effects and the
solutions containing ions leached from thermal insulation on
rate changes over time.
the aqueous corrosion of metals. The primary intent of the
1.6 The measurement values stated in inch-pound units are
practice is for use with thermal insulation and associated
to be regarded as standard.
materialsthatcontributeto,oralternativelyinhibit,theaqueous
1.7 This standard does not purport to address all of the
corrosionofdifferenttypesandgradesofmetalsduetosoluble
safety concerns, if any, associated with its use. It is the
ions that are leached by water from within the insulation. The
responsibility of the user of this standard to establish appro-
quantitative evaluation criteria are Mass Loss Corrosion Rate
priate safety and health practices and determine the applica-
(MLCR) determined from the weight loss due to corrosion of
bility of regulatory limitations prior to use.
exposed metal coupons after they are cleaned.
1.2 The insulation extraction solutions prepared for use in
2. Referenced Documents
the test can be altered by the addition of corrosive ions to the
2
2.1 ASTM Standards:
solutions to simulate contamination from an external source.
A53/A53M Specification for Pipe, Steel, Black and Hot-
Ions expected to provide corrosion inhibition can be added to
Dipped, Zinc-Coated, Welded and Seamless
investigate their inhibitory effect.
A105/A105M Specification for Carbon Steel Forgings for
1.3 Prepared laboratory standard solutions are used as
Piping Applications
reference solutions and controls, to provide a means of
C518 Test Method for Steady-State Thermal Transmission
calibration and comparison. See Fig. 1.
Properties by Means of the Heat Flow Meter Apparatus
1.4 Other liquids can be tested for their potential corrosive-
C665 Specification for Mineral-Fiber Blanket Thermal In-
ness including cooling tower water, boiler feed, and chemical
sulation for Light Frame Construction and Manufactured
stocks. Added chemical inhibitors or protective coatings ap-
Housing
plied to the metal can also be evaluated using the general
C692 Test Method for Evaluating the Influence of Thermal
guidelines of the practice.
Insulations on External Stress Corrosion Cracking Ten-
1.5 This practice cannot cover all possible field conditions
dency of Austenitic Stainless Steel
thatcontributetoaqueouscorrosion.Theintentistoprovidean
C739 Specification for Cellulosic Fiber Loose-Fill Thermal
acceleratedmeanstoobtainanon-subjectivenumericvaluefor
Insulation
judging the potential contribution to the corrosion of metals
C795 Specification for Thermal Insulation for Use in Con-
that can come from ions contained in thermal insulation
tact with Austenitic Stainless Steel
materials or other experimental solutions. The calculated
C871 Test Methods for Chemical Analysis of Thermal
numeric value is the mass loss corrosion rate. This calculation
Insulation Materials for Leachable Chloride, Fluoride,
1
This practice is under the jurisdiction of ASTM Committee C16 on Thermal
2
InsulationandisthedirectresponsibilityofSubcommitteeC16.31onChemicaland For referenced ASTM standards, visit the ASTM website, www.astm.org, or
Physical Properties. contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
Current edition approved May 1, 2005. Published June 2005. DOI: 10.1520/ Standards volume information, refer to the standard’s Document Summary page on
C1617-05. the ASTM website.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
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C1617 – 05
NOTE 1—The Fig. 1 bar graph was created using the MLCR data shown in Table 1. Standard reference tests using de-ionized water, 1 ppm, 5 ppm,
and 10 ppm chloride solutions were performed on mild carbon steel coupons. The calculated MLCR test results for mild carbon steel coupons were
separated into four ranges. The rating crite
...
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