ASTM D6294/D6294M-13
(Test Method)Standard Test Method for Corrosion Resistance of Ferrous Metal Fastener Assemblies Used in Roofing and Waterproofing
Standard Test Method for Corrosion Resistance of Ferrous Metal Fastener Assemblies Used in Roofing and Waterproofing
SIGNIFICANCE AND USE
5.1 It is important to evaluate the corrosion resistance of ferrous metal components used in low-slope roofing and waterproofing because they provide integrity and securement of other system components, such as insulation and membranes. Corrosion of ferrous metal components may result in their early deterioration and may lead to roofing or waterproofing system failure.
5.2 Results from testing ferrous metal components in an acidic atmosphere serve as an indication of the relative corrosion resistance of such components, coated or uncoated, to the environment of the test chamber. The results are not to be construed as a general guideline to the corrosion resistance of such components in other environments or in usage that may be conducive to corrosion.
5.3 Moist air containing sulfur dioxide quickly produces easily visible corrosion on many ferrous metals. It is therefore a test medium suited to detect pores or other sources of weakness in protective barrier coatings.
5.4 This test method applies primarily to evaluating the effectiveness of barrier coatings to provide general corrosion protection under test conditions. It is not intended to evaluate the resistance of the components to specific corrosion mechanisms such as crevice, galvanic, or stress corrosion.
5.5 This test method does not address abrasion resistance of barrier coatings when the fasteners are driven through above roof deck components, such as an existing built-up roof or insulations, or both.
5.6 Only the above deck portion of fasteners subjected to this test method is evaluated.
SCOPE
1.1 This test method covers components of ferrous metal fastener assemblies, excluding those of stainless steel, such as fasteners, stress plates, and batten bars used in low slope roofing and waterproofing, to a sulfurous acid environment. This test method evaluates relative corrosion resistance of the components by determination of percentage of rust or white rust.
1.2 The components may or may not have a surface treatment applied.
1.3 A limiting factor is the subjectiveness when determining actual percentage of rust or white rust corrosion.
1.4 Other performance characteristics of ferrous metal components such as abrasion resistance of barrier coatings are not evaluated in this method.
1.5 This test method was developed based on Practice G87.
1.6 The values stated in either SI units or inch-pound units are to be regarded separately as standard. The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from the two systems may result in non-conformance with the 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:D6294/D6294M −13
Standard Test Method for
Corrosion Resistance of Ferrous Metal Fastener Assemblies
1
Used in Roofing and Waterproofing
This standard is issued under the fixed designation D6294/D6294M; 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 D16 TerminologyforPaint,RelatedCoatings,Materials,and
Applications
1.1 This test method covers components of ferrous metal
D1079 Terminology Relating to Roofing and Waterproofing
fastener assemblies, excluding those of stainless steel, such as
G15 Terminology Relating to Corrosion and Corrosion Test-
fasteners, stress plates, and batten bars used in low slope
3
ing (Withdrawn 2010)
roofing and waterproofing, to a sulfurous acid environment.
G87 Practice for Conducting Moist SO Tests
2
This test method evaluates relative corrosion resistance of the
components by determination of percentage of rust or white
3. Terminology
rust.
3.1 Definitions:
1.2 The components may or may not have a surface treat-
3.1.1 For definitions of terms used in this test method, see
ment applied.
Terminology D1079, G15, and D16.
1.3 Alimiting factor is the subjectiveness when determining
3.2 Definitions of Terms Specific to This Standard:
actual percentage of rust or white rust corrosion.
3.2.1 barrier—any material limiting passage through itself
1.4 Other performance characteristics of ferrous metal com-
of solids, liquids, semi-solids, gases, vapors, or forms of
ponents such as abrasion resistance of barrier coatings are not
energy such as ultraviolet light.
evaluated in this method.
3.2.2 surface treatment—a process by which the surface of
1.5 This test method was developed based on Practice G87.
the ferrous metal component is treated with a barrier coating to
1.6 The values stated in either SI units or inch-pound units
inhibit corrosion. Examples of barrier coatings for ferrous
are to be regarded separately as standard. The values stated in
metal components include galvanization, zinc plating with or
each system may not be exact equivalents; therefore, each
without yellow or clear chromate sealer, cadmium, mechanical
system shall be used independently of the other. Combining
zinc plating and organic or inorganic polymers.
values from the two systems may result in non-conformance
with the standard.
4. Summary of Test Method
1.7 This standard does not purport to address all of the
4.1 This test method exposes ferrous metal specimens to 15
safety concerns, if any, associated with its use. It is the
or 30 (24) h cycles consisting of the following:
responsibility of the user of this standard to establish appro-
4.1.1 Eight (8) h exposure to the sulfur dioxide atmosphere
priate safety and health practices and determine the applica-
in a closed chamber.
bility of regulatory limitations prior to use.
4.1.2 An intermediate step of rinsing with distilled water,
and
2. Referenced Documents
4.1.3 Sixteen (16) h of drying under vented conditions at
2
2.1 ASTM Standards:
controlled temperature and humidity.
4.2 After drying, the test specimens are visually examined
to evaluate the percentage of rust or white rust that formed on
1
This test method is under the jurisdiction ofASTM Committee D08 on Roofing
the surface.
and Waterproofing and is the direct responsibility of Subcommittee D08.20 on
Roofing Membrane Systems.
4.3 The total surface area of the components exposed in the
Current edition approved May 1, 2013. Published June 2013. Originally
2 2
chamber is 0.5 6 0.1 m [775 6 155 in. ].
approved in 1998. Last previous edition approved in 2009 as D6294 – 98
(2009)E01. DOI: 10.1520/D6294_D6294M-13.
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
3
Standards volume information, refer to the standard’s Document Summary page on The last approved version of this historical standard is referenced on
the ASTM website. www.astm.org.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1
---------------------- Page: 1 ----------------------
D6294/D6294M−13
5. Significance and Use 8.2 It is allowable to mix the type of ferrous metal compo-
nents (that is, fasteners, stress plates, an batten bars) in the test
5.1 It is important to evaluate the corrosion resistance of
chamber, provided that the different components do not have
ferrous metal components used in low-slope roofing and
vastly different resistance to corrosion under test conditions.
waterproofing because they provide integrity and securement
The different types of com
...
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.
´1
Designation: D6294/D6294M − 98 (Reapproved 2009) D6294/D6294M − 13
Standard Test Method for
Corrosion Resistance of Ferrous Metal Fastener Assemblies
1
Used in Roofing and Waterproofing
This standard is issued under the fixed designation D6294/D6294M; 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
ε NOTE—Editorially corrected the units of measure in December 2009.
1. Scope
1.1 This test method covers components of ferrous metal fastener assemblies, excluding those of stainless steel, such as
fasteners, stress plates, and batten bars used in low slope roofing and waterproofing, to a sulfurous acid environment. This test
method evaluates relative corrosion resistance of the components by determination of percentage of rust or white rust.
1.2 The components may or may not have a surface treatment applied.
1.3 A limiting factor is the subjectiveness when determining actual percentage of rust or white rust corrosion.
1.4 Other performance characteristics of ferrous metal components such as abrasion resistance of barrier coatings are not
evaluated in this method.
1.5 This test method was developed based on Practice G87.
1.6 The values stated in either SI units or inch-pound units are to be regarded separately as standard. The values stated in each
system may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from the
two systems may result in non-conformance with the 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:
D16 Terminology for Paint, Related Coatings, Materials, and Applications
D1079 Terminology Relating to Roofing and Waterproofing
3
G15 Terminology Relating to Corrosion and Corrosion Testing (Withdrawn 2010)
G87 Practice for Conducting Moist SO Tests
2
3. Terminology
3.1 Definitions:
3.1.1 For definitions of terms used in this test method, see Terminology D1079, G15, and D16.
3.2 Definitions of Terms Specific to This Standard:
3.2.1 barrier—any material limiting passage through itself of solids, liquids, semi-solids, gases, vapors, or forms of energy such
as ultraviolet light.
3.2.2 surface treatment—a process by which the surface of the ferrous metal component is treated with a barrier coating to
inhibit corrosion. Examples of barrier coatings for ferrous metal components include galvanization, zinc plating with or without
yellow or clear chromate sealer, cadmium, mechanical zinc plating and organic or inorganic polymers.
1
This test method is under the jurisdiction of ASTM Committee D08 on Roofing and Waterproofing and is the direct responsibility of Subcommittee D08.20 on Roofing
Membrane Systems.
Current edition approved Dec. 1, 2009May 1, 2013. Published December 2009June 2013. Originally approved in 1998. Last previous edition approved in 19982009 as
D6294 – 98.D6294 – 98 (2009)E01. DOI: 10.1520/D6294_D6294M-98R09E01.10.1520/D6294_D6294M-13.
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.
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 ----------------------
D6294/D6294M − 13
4. Summary of Test Method
4.1 This test method exposes ferrous metal specimens to 15 or 30 (24) h cycles consisting of the following:
4.1.1 Eight (8) h exposure to the sulfur dioxide atmosphere in a closed chamber.
4.1.2 An intermediate step of rinsing with distilled water, and
4.1.3 Sixteen (16) h of drying under vented conditions at controlled temperature and humidity.
4.2 After drying, the test specimens are visually examined to evaluate the percentage of rust or white rust that formed on the
surface.
2 2
4.3 The total surface area of the components exposed in the chamber is 0.5 6 0.1 m [775 6 155 in. ].
5. Significance a
...
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