ASTM F3019/F3019M-19
(Specification)Standard Specification for Chromium Free Zinc-Flake Composite, with or without Integral Lubricant, Corrosion Protective Coatings for Fasteners
Standard Specification for Chromium Free Zinc-Flake Composite, with or without Integral Lubricant, Corrosion Protective Coatings for Fasteners
ABSTRACT
This specification establishes the basic requirements for non-electrolytically applied zinc-flake composite corrosion protective coating systems for fasteners. The requirements apply to appearance, adhesion, corrosion resistance, blisters, thread fit, hydrogen embrittlement, and total coefficient of friction. The coating systems covered by this specification do not contain hexavalent chromium, lead, cadmium, or mercury. This specification is intended for corrosion protection of inch and metric series threaded fasteners as well as for non-threaded fasteners such as washers and pins. This specification also covers test methods, application, inspection, and certification.
SCOPE
1.1 This specification covers the basic requirements for non-electrolytically applied zinc-flake composite corrosion protective coating systems for fasteners (See Note 1).
Note 1: The coating systems do not contain hexavalent chromium, lead, cadmium, or mercury.
1.2 This specification is intended for corrosion protection of inch and metric series threaded fasteners with minimum nominal diameters of 0.250 in. for inch series and [6.00 mm] for metric as well as for non-threaded fasteners such as washers and pins.
1.3 This coating system may be specified to consist of a zinc-flake basecoat, or a zinc-flake basecoat and topcoat (See Note 2).
Note 2: For threaded fasteners, the coating system will typically consist of a zinc-flake basecoat and topcoat.
1.3.1 The basecoat is a zinc-rich material containing aluminum flakes dispersed in a compatible liquid medium. The zinc-flake basecoat may be specified to contain integral lubricant.
1.3.2 Topcoats may be organic or inorganic in composition depending upon the specified requirements.
1.3.2.1 Organic topcoats consist of polymer resins, aluminum, dispersed pigments, and are colored in their applied state.
1.3.2.2 Inorganic topcoats consist of water-dispersed silicate compounds and are transparent in their applied state.
1.3.2.3 Topcoats contain integral lubricants and are applied in conjunction with zinc-flake basecoats to form a coating system with enhanced performance attributes such as increased corrosion resistance, total coefficient of friction properties, chemical resistance, and color.
1.4 These zinc-flake basecoats and topcoats are applied by conventional dip-spin, dip-drain, or spray methods to fasteners which can be handled through a cleaning, coating, and curing operation. The maximum curing temperature is 482 °F [250 °C].
1.5 The friction properties of the coating system may be determined by a standard test to verify process control or by a part specific test which requires the purchaser to establish and communicate technical criteria.
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 are not necessarily exact equivalents; therefore, to ensure conformance with the standard, each system shall be used independently of the other, and values from the two systems shall not be combined.
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, health, and environmental practices and determine the applicability of regulatory limitations prior to use.
1.8 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
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This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the
Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
Designation:F3019/F3019M −19
Standard Specification for
Chromium Free Zinc-Flake Composite, with or without
Integral Lubricant, Corrosion Protective Coatings for
1
Fasteners
ThisstandardisissuedunderthefixeddesignationF3019/F3019M;thenumberimmediatelyfollowingthedesignationindicatestheyear
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* 1.4 These zinc-flake basecoats and topcoats are applied by
conventional dip-spin, dip-drain, or spray methods to fasteners
1.1 This specification covers the basic requirements for
which can be handled through a cleaning, coating, and curing
non-electrolytically applied zinc-flake composite corrosion
operation. The maximum curing temperature is 482 °F
protective coating systems for fasteners (See Note 1).
[250°C].
NOTE 1—The coating systems do not contain hexavalent chromium,
1.5 The friction properties of the coating system may be
lead, cadmium, or mercury.
determined by a standard test to verify process control or by a
1.2 Thisspecificationisintendedforcorrosionprotectionof
part specific test which requires the purchaser to establish and
inch and metric series threaded fasteners with minimum
communicate technical criteria.
nominal diameters of 0.250 in. for inch series and [6.00 mm]
1.6 The values stated in either SI units or inch-pound units
formetricaswellasfornon-threadedfastenerssuchaswashers
are to be regarded separately as standard. The values stated in
and pins.
each system are not necessarily exact equivalents; therefore, to
1.3 This coating system may be specified to consist of a
ensure conformance with the standard, each system shall be
zinc-flake basecoat, or a zinc-flake basecoat and topcoat (See
used independently of the other, and values from the two
Note 2).
systems shall not be combined.
NOTE 2—For threaded fasteners, the coating system will typically
1.7 This standard does not purport to address all of the
consist of a zinc-flake basecoat and topcoat.
safety concerns, if any, associated with its use. It is the
responsibility of the user of this standard to establish appro-
1.3.1 The basecoat is a zinc-rich material containing alumi-
num flakes dispersed in a compatible liquid medium. The priate safety, health, and environmental practices and deter-
mine the applicability of regulatory limitations prior to use.
zinc-flake basecoat may be specified to contain integral lubri-
1.8 This international standard was developed in accor-
cant.
dance with internationally recognized principles on standard-
1.3.2 Topcoats may be organic or inorganic in composition
ization established in the Decision on Principles for the
depending upon the specified requirements.
Development of International Standards, Guides and Recom-
1.3.2.1 Organic topcoats consist of polymer resins,
mendations issued by the World Trade Organization Technical
aluminum,dispersedpigments,andarecoloredintheirapplied
Barriers to Trade (TBT) Committee.
state.
1.3.2.2 Inorganictopcoatsconsistofwater-dispersedsilicate
2. Referenced Documents
compounds and are transparent in their applied state.
2
2.1 ASTM Standards:
1.3.2.3 Topcoats contain integral lubricants and are applied
in conjunction with zinc-flake basecoats to form a coating B117Practice for Operating Salt Spray (Fog) Apparatus
systemwithenhancedperformanceattributessuchasincreased B487Test Method for Measurement of Metal and Oxide
corrosion resistance, total coefficient of friction properties, Coating Thickness by Microscopical Examination of
chemical resistance, and color. Cross Section
B499Test Method for Measurement of CoatingThicknesses
by the Magnetic Method: Nonmagnetic Coatings on
1
This specification is under the jurisdiction of ASTM Committee F16 on
Fasteners and is the direct responsibility of Subcommittee F16.03 on Coatings on
2
Fasteners. For referenced ASTM standards, visit the ASTM website, www.astm.org, or
Current edition approved Dec. 1, 2019. Published February 2020 Originally contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
approved in 2014. Last previous edition approved in 2014 as E3019/E3019M. DOI: Standards volume information, refer to the standard’s Document Summary page on
10.1520/F3019_F3019M–19. the ASTM website.
*A Summary of Changes section appears at the end of this standard
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1
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F3019/F3019M−19
Magnetic Basis Metals 3.1.1 Grade 1—requi
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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: F3019/F3019M − 14 F3019/F3019M − 19
Standard Specification for
Chromium Free Zinc-Flake Composite, with or without
Integral Lubricant, Corrosion Protective Coatings for
1
Fasteners
This standard is issued under the fixed designation F3019/F3019M; 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 Scope*
1.1 This specification covers the basic requirements for non-electrolytically applied zinc-flake composite corrosion protective
coating systems for fasteners (See Note 1).
NOTE 1—The coating systems do not contain hexavalent chromium, lead, cadmium, or mercury.
1.2 This specification is intended for corrosion protection of inch and metric series threaded fasteners with minimum nominal
diameters of 0.250 in. for inch series and [6.00 mm] for metric as well as for non-threaded fasteners such as washers and pins.
1.3 This coating system may be specified to consist of a zinc-flake basecoat, or a zinc-flake basecoat and topcoat (See Note 2).
NOTE 2—For threaded fasteners, the coating system will typically consist of a zinc-flake basecoat and topcoat.
1.3.1 The basecoat is a zinc-rich material containing aluminum flakes dispersed in a compatible liquid medium. The zinc-flake
basecoat may be specified to contain integral lubricant.
1.3.2 Topcoats may be organic or inorganic in composition depending upon the specified requirements.
1.3.2.1 Organic topcoats consist of polymer resins, aluminum, dispersed pigments, and are colored in their applied state.
1.3.2.2 Inorganic topcoats consist of water-dispersed silicate compounds and are transparent in their applied state.
1.3.2.3 Topcoats contain integral lubricants and are applied in conjunction with zinc-flake basecoats to form a coating system
with enhanced performance attributes such as increased corrosion resistance, total coefficient of friction properties, chemical
resistance, and color.
1.4 These zinc-flake basecoats and topcoats are applied by conventional dip-spin, dip-drain, or spray methods to fasteners which
can be handled through a cleaning, coating, and curing operation. The maximum curing temperature is 482°F [250°C].482 °F
[250 °C].
1.5 The friction properties of the coating system may be determined by a standard test to verify process control or by a part
specific test which requires the purchaser to establish and communicate technical criteria.
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 are not necessarily exact equivalents; therefore, to ensure conformance with the standard, each system shall be used
independently of the other, and values from the two systems shall not be combined.
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.
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, health, and environmental practices and determine the applicability of
regulatory limitations prior to use.
1.8 This international standard was developed in accordance with internationally recognized principles on standardization
established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued
by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
1
This specification is under the jurisdiction of ASTM Committee F16 on Fasteners and is the direct responsibility of Subcommittee F16.03 on Coatings on Fasteners.
Current edition approved Oct. 1, 2014Dec. 1, 2019. Published November 2014February 2020 Originally approved in 2014. Last previous edition approved in 2014 as
E3019/E3019M. DOI: 10.1520/F3019_F3019M–14.10.1520/F3019_F3019M–19.
*A Summary of Changes section appears at the end of this standard
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1
---------------------- Page: 1 ----------------------
F3019/F3019M − 19
2. Referenced Documents
2
2.1 ASTM Standards:
B117 Practice fo
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