ASTM D2370-16

Standard Test Method for Tensile Properties of Organic Coatings

SIGNIFICANCE AND USE
5.1 Tensile properties determined by this method are of value in studying the behavior of coatings subjected to environmental stresses, such as those produced by aging and weathering. (See Refs. (1-10).)4  
5.2 Tensile properties may vary with specimen thickness, method of preparation, gage length, rate of load application, tensile tester response, and type of grips used. Consequently, where precise comparative results are desired, these factors must be carefully controlled.
SCOPE
1.1 This test method covers the determination of the elongation, tensile strength, and stiffness (modulus of elasticity) of organic coatings when tested as free films.  
1.2 The values stated in SI units are to be regarded as standard. The values given in parentheses are mathematical conversions to inch-pound units that are provided for information only and are not considered standard.  
1.3 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.

General Information

• Status: Historical
• Publication Date: 30-Jun-2016
• ICS: 25.220.60 - Organic coatings
• Technical Committee: D01 - Paint and Related Coatings, Materials, and Applications
• Drafting Committee: D01.23 - Physical Properties of Applied Paint Films

Standards Content (Sample)

NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
Contact ASTM International (www.astm.org) for the latest information
Designation: D2370 − 16
Standard Test Method for
1
Tensile Properties of Organic Coatings
This standard is issued under the fixed designation D2370; 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.
This standard has been approved for use by agencies of the U.S. Department of Defense.
1. Scope 3.1.1 elongation at break, n—the increase in specimen
length from the point of initial load application to the point of
1.1 This test method covers the determination of the
film rupture in a tension test.
elongation, tensile strength, and stiffness (modulus of elastic-
3.1.2 gage length, n—the initial length of the test specimen
ity) of organic coatings when tested as free films.
between the jaws of the tensile tester.
1.2 The values stated in SI units are to be regarded as
3.1.3 stiffness (modulus of elasticity), n—the load per unit
standard. The values given in parentheses are mathematical
arearequiredtoelongatethefilm1%fromthefirstpointinthe
conversions to inch-pound units that are provided for informa-
stress-strain curve where the slope becomes constant.
tion only and are not considered standard.
3.1.4 stress-strain curve, n—the curve resulting from a plot
1.3 This standard does not purport to address all of the
of tensile load against the distance of jaw separation (elonga-
safety concerns, if any, associated with its use. It is the
tion of specimen).
responsibility of the user of this standard to establish appro-
3.1.5 tensile strength (nominal), n—the load per original
priate safety and health practices and determine the applica-
unit area at which a specimen fails or yields in a tension (pull)
bility of regulatory limitations prior to use.
test.
2. Referenced Documents
4. Summary of Test Method
2
2.1 ASTM Standards:
4.1 Free unsupported films of the materials to be tested are
D823Practices for Producing Films of Uniform Thickness
prepared in accordance with Test Method D4708. The tensile
of Paint, Varnish, and Related Products on Test Panels
propertiesofthefreefilmsaredeterminedbymeansofatensile
D882Test Method for Tensile Properties of Thin Plastic
testing apparatus.
Sheeting
D1005Test Method for Measurement of Dry-Film Thick-
5. Significance and Use
ness of Organic Coatings Using Micrometers
5.1 Tensile properties determined by this method are of
D3980Practice for Interlaboratory Testing of Paint and
3
value in studying the behavior of coatings subjected to envi-
Related Materials (Withdrawn 1998)
ronmental stresses, such as those produced by aging and
D4708Practice for Preparation of Uniform Free Films of
4
weathering. (See Refs. (1-10).)
Organic Coatings
5.2 Tensile properties may vary with specimen thickness,
3. Terminology
method of preparation, gage length, rate of load application,
tensile tester response, and type of grips used. Consequently,
3.1 Definitions of Terms Specific to This Standard:
where precise comparative results are desired, these factors
must be carefully controlled.
1
This test method is under the jurisdiction of ASTM Committee D01 on Paint
6. Apparatus
and Related Coatings, Materials, andApplications and is the direct responsibility of
Subcommittee D01.23 on Physical Properties of Applied Paint Films.
6.1 Equipment for applying films of uniform thickness as
Current edition approved July 1, 2016. Published November 2016. Originally
described in Practices D823.
approved in 1965. Last previous edition approved in 2010 as D2370–98(2010).
DOI: 10.1520/D2370-16.
6.2 Micrometer Film Thickness Gage as described in Test
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
Method D1005.
contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website.
3 4
The last approved version of this historical standard is referenced on Boldfacenumbersinparenthesesrefertothelistofreferencesattheendofthis
www.astm.org. standard.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1

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D2370 − 16
6.3 Tensile Testeroftheconstantrateofjawseparationtype, facturer and models. The material and method of making the
equipped with load cells having capacities of 1 to 50 N (0.2 to marks must not affect the characteristics of the sample.
10 lb), and equipped with computer with tester controlling
10.3 Set the jaw separation of the tensile tester at the gage
software, or optionally an indicating device such as an elec-
length selected. Place the test specimen in the grips of the
tro
...

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: D2370 − 98 (Reapproved 2010) D2370 − 16
Standard Test Method for
1
Tensile Properties of Organic Coatings
This standard is issued under the fixed designation D2370; 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.
This standard has been approved for use by agencies of the U.S. Department of Defense.
1. Scope
1.1 This test method covers the determination of the elongation, tensile strength, and stiffness (modulus of elasticity) of organic
coatings when tested as free films.
1.2 The values stated in inch-poundSI units are to be regarded as standard. The values given in parentheses are mathematical
conversions to SIinch-pound units that are provided for information only and are not considered standard.
1.3 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.Specific hazard statements are given in Section 7.
2. Referenced Documents
2
2.1 ASTM Standards:
D823 Practices for Producing Films of Uniform Thickness of Paint, Varnish, and Related Products on Test Panels
D882 Test Method for Tensile Properties of Thin Plastic Sheeting
D1005 Test Method for Measurement of Dry-Film Thickness of Organic Coatings Using Micrometers
3
D3980 Practice for Interlaboratory Testing of Paint and Related Materials (Withdrawn 1998)
D4708 Practice for Preparation of Uniform Free Films of Organic Coatings
3. Terminology
3.1 Definitions of Terms Specific to This Standard:
3.1.1 elongation, elongation at break, n—the increase in specimen length from the point of initial load application to the point
of film rupture in a tension test.
3.1.2 gage length, n—the initial length of the test specimen between the jaws of the tensile tester.
3.1.3 stiffness (modulus of elasticity), n—the load per unit area required to elongate the film 1 % from the first point in the
stress-strain curve where the slope becomes constant.
3.1.4 stress-strain curve, n—the curve resulting from a plot of tensile load against the distance of jaw separation (elongation of
specimen).
3.1.5 tensile strength (nominal), n—the load per original unit area at which a specimen fails or yields in a tension (pull) test.
4. Summary of Test Method
4.1 Free unsupported films of the materials to be tested are prepared. prepared in accordance with Test Method D4708. The
tensile properties of the free films are determined by means of a tensile testing apparatus.
1
This test method is under the jurisdiction of ASTM Committee D01 on Paint and Related Coatings, Materials, and Applications and is the direct responsibility of
Subcommittee D01.23 on Physical Properties of Applied Paint Films.
Current edition approved Dec. 1, 2010July 1, 2016. Published December 2010November 2016. Originally approved in 1965. Last previous edition approved in 20022010
ε1
as D2370 – 98 (2002)(2010). . DOI: 10.1520/D2370-98R10.10.1520/D2370-16.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM Standards
volume information, refer to the standard’sstandard’s Document Summary page on the ASTM website.
3
The last approved version of this historical standard is referenced on www.astm.org.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1

---------------------- Page: 1 ----------------------
D2370 − 16
5. Significance and Use
5.1 Tensile properties determined by this method are of value in studying the behavior of coatings subjected to environmental
4
stresses, such as those produced by aging and weathering. (See Refs. (1-10).)
5.2 Tensile properties may vary with specimen thickness, method of preparation, gage length, rate of load application, tensile
tester response, and type of grips used. Consequently, where precise comparative results are desired, these factors must be carefully
controlled.
6. Apparatus
6.1 Equipment for applying films of uniform thickness as described in Practices D823.
6.2 Micrometer Film Thickness Gage as described in Test Method D1005.
6.3 Tensile Tester of the constant rate of jaw separation type, equipped with loa
...