ASTM C1617-15
(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 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.
5.2 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).
5.3 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.
5.4 This procedure can be used to evaluate all types of thermal insulation and fireproofing materials (industrial, commercial, residential, cryogenic, fire-resistive, insulating cement) manufactured using inorganic or organic materials, faced or unfaced, for which a filtered extraction solution can be obtained.
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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 standard solutions are used as reference solutions and controls, to provide a means of calibration and comparison. See Fig. 1 and Table 1.Solution
19.02
35.17
57.31
62.61
11.68
29.87
40.91
56.48
14.04
33.00
66.76
110.54
12.13
37.91
52.46
131.35
12.45
29.80
16.53
52.27
14.42
22.72
42.51
35.42
6.13
35.42
76.33
67.01
13.27
31.78
111.82
57.48
21.25
17.04
42.19
98.92
7.59
37.78
44.42
132.35
12.83
32.55
53.61
61.52
6.70
36.12
54.25
36.42
16.08
25.66
41.87
90.44
19.02
14.93
54.50
95.48
11.42
31.08
65.67
63.44
14.81
34.21
70.46
99.63
9.38
34.46
42.57
69.63
18.38
36.06
63.44
107.28
8.62
27.38
50.10
58.84
8.49
24.19
48.63
65.10
12.13
15.25
55.40
64.27
5.36
33.70
69.12 ...
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Designation: C1617 − 15
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
practice is for use with thermal insulation and associated
1.6 Thevaluesstatedininch-poundunitsaretoberegarded
materialsthatcontributeto,oralternativelyinhibit,theaqueous
as standard. The values given in parentheses are mathematical
corrosionofdifferenttypesandgradesofmetalsduetosoluble
conversions to SI units that are provided for information only
ions that are leached by water from within the insulation. The
and are not considered standard.
quantitative evaluation criteria are Mass Loss Corrosion Rate
1.7 This standard does not purport to address all of the
(MLCR) expressed in mils per year determined from the
safety concerns, if any, associated with its use. It is the
weight loss due to corrosion of exposed metal coupons after
responsibility of the user of this standard to establish appro-
they are cleaned.
priate safety and health practices and determine the applica-
1.2 The insulation extraction solutions prepared for use in
bility of regulatory limitations prior to use.
the test can be altered by the addition of corrosive ions to the
solutions to simulate contamination from an external source.
2. Referenced Documents
Ions expected to provide corrosion inhibition can be added to
2
investigate their inhibitory effect. 2.1 ASTM Standards:
A53/A53MSpecification for Pipe, Steel, Black and Hot-
1.3 Prepared laboratory standard solutions are used as
Dipped, Zinc-Coated, Welded and Seamless
reference solutions and controls, to provide a means of
A105/A105MSpecification for Carbon Steel Forgings for
calibration and comparison. See Fig. 1 and Table 1.
Piping Applications
1.4 Other liquids can be tested for their potential corrosive-
C168Terminology Relating to Thermal Insulation
ness including cooling tower water, boiler feed, and chemical
C518Test Method for Steady-State Thermal Transmission
stocks. Added chemical inhibitors or protective coatings ap-
Properties by Means of the Heat Flow Meter Apparatus
plied to the metal can also be evaluated using the general
C665SpecificationforMineral-FiberBlanketThermalInsu-
guidelines of the practice.
lation for Light Frame Construction and Manufactured
1.5 This practice cannot cover all possible field conditions Housing
thatcontributetoaqueouscorrosion.Theintentistoprovidean C692Test Method for Evaluating the Influence of Thermal
acceleratedmeanstoobtainanon-subjectivenumericvaluefor Insulations on External Stress Corrosion Cracking Ten-
judging the potential contribution to the corrosion of metals dency of Austenitic Stainless Steel
that can come from ions contained in thermal insulation
C739Specification for Cellulosic Fiber Loose-Fill Thermal
materials or other experimental solutions. The calculated Insulation
numeric value is the mass loss corrosion rate. This calculation
C795Specification for Thermal Insulation for Use in Con-
tact with Austenitic Stainless Steel
1
This practice is under the jurisdiction of ASTM Committee C16 on Thermal
InsulationandisthedirectresponsibilityofSubcommitteeC16.31onChemicaland
2
Physical Properties. For referenced ASTM standards, visit the ASTM website, www.astm.org, or
Current edition approved March 1, 2015. Published April 2015. Originally contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
approved in 2005. Last previous edition approved in 2009 as C1617–09. DOI: Standards volume information, refer to the standard’s Document Summary page on
10.1520/C1617-15. the ASTM website.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1
---------------------- Page: 1 ----------------------
C1617 − 15
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 ch
...
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 − 09 C1617 − 15
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 standard 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.
1.5 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 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.
1.7 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.
2. Referenced Documents
2
2.1 ASTM Standards:
A53/A53M Specification for Pipe, Steel, Black and Hot-Dipped, Zinc-Coated, Welded and Seamless
A105/A105M Specification for Carbon Steel Forgings for Piping Applications
C168 Terminology Relating to Thermal Insulation
C518 Test Method for Steady-State Thermal Transmission Properties by Means of the Heat Flow Meter Apparatus
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 Nov. 1, 2009March 1, 2015. Published November 2009.April 2015.Originally . Originally approved in 2005. Last previous edition approved in
20052009 as C1617C1617–05.–09. DOI: 10.1520/C1617-09.10.1520/C1617-15.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or contact ASTM Customer Service at service@astm.org. 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 ----------------------
C1617 − 15
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 chl
...
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