ASTM D6294-98

Standard Test Method for Corrosion Resistance of Ferrous Metal Fastener Assemblies Used in Roofing and Waterproofing

SCOPE
1.1 This test method covers components of ferrous metal fastner 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 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 G 87.
1.6 The values stated in SI units are to be regarded as the standard. The inch-pound values given in parentheses may be approximate, and are presented for information purposes.
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.

General Information

• Status: Historical
• Publication Date: 09-Jul-1998
• Technical Committee: D08 - Roofing and Waterproofing
• Drafting Committee: D08.20 - Roofing Membrane Systems

Relations

• Replaced By: ASTM D6294-98(2003) - Standard Test Method for Corrosion Resistance of Ferrous Metal Fastener Assemblies Used in Roofing and Waterproofing
• Effective Date: 10-Jul-2003

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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.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: D 6294 – 98
AMERICAN SOCIETY FOR TESTING AND MATERIALS
100 Barr Harbor Dr., West Conshohocken, PA 19428
Reprinted from the Annual Book of ASTM Standards. Copyright ASTM
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 D 6294; 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 (e) indicates an editorial change since the last revision or reapproval.
1. Scope 3.1.1 For definitions of terms used in this method, see
Terminology D 1079 and Definitions G 15 and Terminology
1.1 This test method covers components of ferrous metal
D 16.
fastener assemblies, excluding those of stainless steel, such as
3.2 Definitions of Terms Specific to This Standard:
fasteners, stress plates, and batten bars used in low slope
3.2.1 barrier—any material limiting passage through itself
roofing and waterproofing, to a sulfurous acid environment.
of solids, liquids, semi-solids, gases, vapors, or forms of
This test method evaluates relative corrosion resistance of the
energy such as ultraviolet light.
components by determination of percentage of rust or white
3.2.2 surface treatment—a process by which the surface of
rust.
the ferrous metal component is treated with a barrier coating to
1.2 The components may or may not have a surface treat-
inhibit corrosion. Examples of barrier coatings for ferrous
ment applied.
metal components include galvanization, zinc plating with or
1.3 A limiting factor is the subjectiveness when determining
without yellow or clear chromate sealer, cadmium, mechanical
actual percentage of rust or white rust corrosion.
zinc plating and organic or inorganic polymers.
1.4 Other performance characteristics of ferrous metal com-
ponents such as abrasion resistance of barrier coatings are not
4. Summary of Test Method
evaluated in this method.
4.1 This test method exposes ferrous metal specimens to 15
1.5 This test method was developed based on Practice G 87.
or 30 (24) h cycles consisting of the following:
1.6 The values stated in SI units are to be regarded as the
4.1.1 Eight (8) h exposure to the sulfur dioxide atmosphere
standard. The inch-pound values given in parentheses may be
in a closed chamber.
approximate, and are presented for information purposes.
4.1.2 An intermediate step of rinsing with distilled water,
1.7 This standard does not purport to address all of the
and
safety concerns, if any, associated with its use. It is the
4.1.3 Sixteen (16) h of drying under vented conditions at
responsibility of the user of this standard to establish appro-
controlled temperature and humidity.
priate safety and health practices and determine the applica-
4.2 After drying, the test specimens are visually examined
bility of regulatory limitations prior to use.
to evaluate the percentage of rust or white rust that formed on
2. Referenced Documents the surface.
4.3 The total surface area of the components exposed in the
2.1 ASTM Standards:
2 2
chamber is 0.5 6 0.1 m (775 6 155 in. ).
D 16 Terminology Relating to Paint, Varnish, Lacquer, and
2
Related Products
5. Significance and Use
D 1079 Terminology Relating to Roofing, Waterproofing,
3
5.1 It is important to evaluate the corrosion resistance of
and Bituminous Materials
ferrous metal components used in low-slope roofing and
G 15 Definitions of Terms Relating to Corrosion and Cor-
4
waterproofing because they provide integrity and securement
rosion Testing
4 of other system components, such as insulation and mem-
G 87 Practice for Conducting Moist SO Tests
2
branes. Corrosion of ferrous metal components may result in
3. Terminology their early deterioration and may lead to roofing or waterproof-
ing system failure.
3.1 Definitions:
5.2 Results from testing ferrous metal components in an
acidic atmosphere serve as an indication of the relative
1
This test method is under the jurisdiction of ASTM Committee D-8 on Roofing,
corrosion resistance of such components, coated or uncoated,
Waterproofing and Bituminus Materials and is the direct responsibility of Subcom-
to the environment of the test chamber. The results are not to
mittee D08.20 on Roofing Membrane Systems.
Current edition approved July 10, 1998. Published November 1998.
be construed as a general guideline to the corrosion resistance
2
Annual Book of ASTM Standards, Vol 06.01.
of such components in other environments or in usage that may
3
Annual Book of ASTM Standards, Vol 04.04.
4 be conducive to corrosion.
Annual Book of ASTM Standards, Vol 03.02.
1

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NOTICE:¬This¬standard¬has¬either¬been¬superceded¬and¬re
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