ASTM C419-08
(Practice)Standard Practice for Making and Curing Test Specimens of Mastic Thermal Insulation Coatings
Standard Practice for Making and Curing Test Specimens of Mastic Thermal Insulation Coatings
SIGNIFICANCE AND USE
The method of preparation of test specimens of mastic thermal insulation coatings can have an impact upon values obtained during testing. Testing laboratories should follow this practice to help ensure the reproducibility of test methods for which a cured sheet or film of a mastic thermal insulation coating is required.
SCOPE
1.1 This practice covers the preparation of specimens of mastics and coatings in the form of cured sheets or films that may be used in other procedures for evaluation of physical properties.
1.2 Three procedures are described for casting and curing (Note 1) mastics and coatings of all types for thermal insulation.
Note 1—The term “cure” is used primarily to denote the condition that develops as the result of loss of volatile matter but also to denote possible subsequent changes in chemical or physical properties due to crosslinking.
1.2.1 Procedure A is intended to provide a specimen of controlled thickness applied to insulation, and equivalent in other respects to that obtainable under field application conditions. The thermal insulation intended for field use may be specified as the backing.
1.2.2 Procedure B is intended to provide a free-film specimen of controlled thickness having smooth surfaces on both sides. This type is required for some types of physical testing.
1.2.3 Procedure C is intended to provide a free-film specimen of controlled thickness having one smooth surface (as field applied).
1.3 The procedures of this practice are not intended for the evaluation of application properties. These are covered in Test Methods C 461 and Guide C 647.
1.4 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.
1.5 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: C419 − 08
StandardPractice for
Making and Curing Test Specimens of Mastic Thermal
1
Insulation Coatings
This standard is issued under the fixed designation C419; 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 2. Referenced Documents
2
1.1 This practice covers the preparation of specimens of 2.1 ASTM Standards:
mastics and coatings in the form of cured sheets or films that C168 Terminology Relating to Thermal Insulation
may be used in other procedures for evaluation of physical C461 Test Methods for Mastics and Coatings Used With
properties. Thermal Insulation
C533 Specification for Calcium Silicate Block and Pipe
1.2 Three procedures are described for casting and curing
Thermal Insulation
(Note 1) mastics and coatings of all types for thermal insula-
C647 Guide to Properties and Tests of Mastics and Coating
tion.
Finishes for Thermal Insulation
NOTE 1—The term “cure” is used primarily to denote the condition that
D6 Test Method for Loss on Heating of Oil and Asphaltic
develops as the result of loss of volatile matter but also to denote possible
Compounds
subsequentchangesinchemicalorphysicalpropertiesduetocrosslinking.
1.2.1 Procedure A is intended to provide a specimen of
3. Terminology
controlled thickness applied to insulation, and equivalent in
3.1 Definitions—For definitions used in this practice see
other respects to that obtainable under field application condi-
Terminology C168.
tions. The thermal insulation intended for field use may be
specified as the backing.
4. Summary of Practice
1.2.2 Procedure B is intended to provide a free-film speci-
4.1 Mastics and coatings are applied by a metal blade to
men of controlled thickness having smooth surfaces on both
thermal insulation backing material in a thickness regulated by
sides. This type is required for some types of physical testing.
guide bars. Moderate heat is applied to the specimens to dry or
1.2.3 Procedure C is intended to provide a free-film speci-
otherwise cure them.
men of controlled thickness having one smooth surface (as
field applied).
5. Significance and Use
1.3 The procedures of this practice are not intended for the
5.1 The method of preparation of test specimens of mastic
evaluation of application properties. These are covered in Test
thermal insulation coatings can have an impact upon values
Methods C461 and Guide C647.
obtained during testing. Testing laboratories should follow this
1.4 The values stated in inch-pound units are to be regarded
practice to help ensure the reproducibility of test methods for
as standard. The values given in parentheses are mathematical
which a cured sheet or film of a mastic thermal insulation
conversions to SI units that are provided for information only
coating is required.
and are not considered standard.
1.5 This standard does not purport to address all of the
6. Apparatus
safety concerns, if any, associated with its use. It is the
6.1 Guide Bars—Two rectangular steel bars of thickness
responsibility of the user of this standard to establish appro-
equal to the desired wet thickness of the applied mastic or
priate safety and health practices and determine the applica-
coating. The guide bars shall be equal in length to the total
bility of regulatory limitations prior to use.
length of the specimens. For use on relatively soft backing
material, the guide bars may be equipped with pins projecting
1
This practice is under the jurisdiction of ASTM Committee C16 on Thermal
Insulation and is the direct responsibility of Subcommittee C16.33 on Insulation
2
Finishes and Moisture. For referenced ASTM standards, visit the ASTM website, www.astm.org, or
Current edition approved May 1, 2008. Published May 2008. Originally contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
approved in 1958. Last previous edition approved in 2000 as C419 – 94 (2000). Standards volume information, refer to the standard’s Document Summary page on
DOI: 10.1520/C0419-08. the ASTM website.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1
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C419 − 08
from the lower surface at each end, which can be forced into end to end of the specimen covers the entire space between the
the backing to hold the bars in position during preparation of guide bars. Remove the guide bars without disturbing the wet
the test specimen. specimen.
6.2 Strike-Off Bar—Aflat strip of rigid metal, not less than 7.5 Procedure B (Free Film)—For the determination of
2 in. (51 mm) greater in length t
...
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:C 419–94(Reapproved 2000) Designation: C419 – 08
Standard Practice for
Making and Curing Test Specimens of Mastic Thermal
1
Insulation Coatings
This standard is issued under the fixed designation C419; 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 the preparation of specimens of mastics and coatings in the form of cured sheets or films that may be
used in other procedures for evaluation of physical properties.
1.2 Three procedures are described for casting and curing (Note 1) mastics and coatings of all types for thermal insulation.
NOTE 1—The term “cure” is used primarily to denote the condition that develops as the result of loss of volatile matter but also to denote possible
subsequent changes in chemical or physical properties due to crosslinking.
1.2.1 Procedure A is intended to provide a specimen of controlled thickness applied to insulation, and equivalent in other
respects to that obtainable under field application conditions. The thermal insulation intended for field use may be specified as the
backing.
1.2.2 Procedure B is intended to provide a free-film specimen of controlled thickness having smooth surfaces on both sides.
This type is required for some types of physical testing.
1.2.3 Procedure C is intended to provide a free-film specimen of controlled thickness having one smooth surface (as field
applied).
1.3 The procedures of this practice are not intended for the evaluation of application properties. These are covered in Test
Methods C 461C461 and Guide C 647C647.
1.4The values stated in inch-pound units are to be regarded as the standard. The values given in parentheses are for information
only.
1.4
1.5 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:
C168 Terminology Relating to Thermal Insulation
C461 Test Methods for Mastics and Coatings Used With Thermal Insulation
C533 Specification for Calcium Silicate Block and Pipe Thermal Insulation
C647 Guide to Properties and Tests of Mastics and Coating Finishes for Thermal Insulation
D6 Test Method for Loss on Heating of Oil and Asphaltic Compounds
3. Summary of Practice
3.1Mastics and coatings are applied by a metal blade to thermal insulation backing material in a thickness regulated by guide
bars. Moderate heat is applied to the specimens to dry or otherwise cure them. Terminology
3.1 Definitions—For definitions used in this practice see Terminology C168.
4. Significance and Use
4.1The method of preparation of test specimens of mastic thermal insulation coatings can have an impact upon values obtained
1
This practice is under the jurisdiction of ASTM Committee C16 on Thermal Insulation and is the direct responsibility of Subcommittee C16.33 on Insulation Finishes
and Moisture.
Current edition approved Dec. 15, 1994. Published February 1995. Originally published as C 419–58 T. Last previous edition C 419–81(1990).
Current edition approved May 1, 2008. Published May 2008. Originally approved in 1958. Last previous edition approved in 2000 as C419 – 94 (2000). DOI:
10.1520/C0419-08.
2
For referencedASTM standards, visit theASTM website, www.astm.org, or contactASTM Customer Service at service@astm.org. For Annual Book of ASTM Standards
, Vol 04.06.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 ----------------------
C419 – 08
during testing. Testing laboratories should follow this practice to help ensure the reproducibility of test methods for which a cured
sheet or film of a mastic thermal insulation coating is required. Summary of Practice
4.1 Mastics and coatings are applied by a metal blade to thermal insulation backing material in a thickness regulated by guide
bars. Moderate heat is applied to the specimens to dry or otherwise cure them.
5. Significance and Use
5.1 The method of preparation of test specimens of mastic thermal insulation coatings can have an
...
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