ASTM F1137-11

Standard Specification for Phosphate/Oil and Phosphate/Organic Corrosion Protective Coatings for Fasteners

ABSTRACT
This specification covers the basic physical requirements and test methods for phosphate/oil and phosphate/organic corrosion protective coatings for fasteners such as nuts, clips, washers, and other ferrous threaded and non-threaded fasteners that require corrosion protection. The zinc phosphate treatment and subsequent protective coatings are classified into seven grades according to the following requirements: Grade 0A consists of a zinc phosphate coating with no additional sealer (dry); Grade 0B consists of a zinc phosphate coating with a dry organic sealer; Grades 0C, 0D, and I consist of a zinc phosphate coating with supplemental protective oil type compound; and Grades II and III consist of a zinc phosphate with a supplemental zinc-rich epoxy resin coating (with the addition of a clear organic topcoat for Grade II). These coatings may or may not have a decorative finish. The coatings shall meet the requirements specified for appearance, adhesion, corrosion resistance, coating flexibility, thread fit, and dry-to-touch characteristics. In addition, they shall also undergo humidity and coating thickness tests.
SCOPE
1.1 This specification covers the basic requirements for four grades of corrosion protection for fasteners. Grade A consists of a zinc phosphate coating with no additional sealer (dry), Grade B consists of a zinc phosphate coating with a dry organic sealer, Grade C, and Grade D.1.2 This specification is intended primarily for fasteners such as nuts, clips, washers, and other ferrous threaded and non-threaded fasteners that require corrosion protection.
1.2 This specification is intended primarily for fasteners such as nuts, clips, washers, and other ferrous threaded and non-threaded fasteners that require corrosion protection.
1.3 These coatings may or may not have a decorative finish.

General Information

• Status: Historical
• Publication Date: 30-Apr-2011
• ICS: 21.060.01 - Fasteners in general
• ICS: 25.220.60 - Organic coatings
• Technical Committee: F16 - Fasteners
• Drafting Committee: F16.03 - Coatings on Fasteners

Relations

• Replaces: ASTM F1137-00(2006) - Standard Specification for Phosphate/Oil and Phosphate/Organic Corrosion Protective Coatings for Fasteners
• Effective Date: 01-May-2011
• Replaced By: ASTM F1137-11e1 - Standard Specification for Phosphate/Oil Corrosion Protective Coatings for Fasteners
• Effective Date: 01-May-2011
• Referred By: ASTM F2833-11(2017) - Standard Specification for Corrosion Protective Fastener Coatings with Zinc Rich Base Coat and Aluminum Organic/Inorganic Type
• Effective Date: 01-May-2011
• Referred By: ASTM F1940-07a(2019) - Standard Test Method for Process Control Verification to Prevent Hydrogen Embrittlement in Plated or Coated Fasteners
• Effective Date: 01-May-2011

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: F1137 – 11
Standard Specification for
1
Phosphate/Oil Corrosion Protective Coatings for Fasteners
This standard is issued under the fixed designation F1137; 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.
TABLE 1 Classification and Performance Requirements of
1. Scope*
Protective Coatings
1.1 This specification covers the basic requirements for four
Grade No. Zinc Supplemental Coating Salt Spray,
grades of corrosion protection for fasteners. Grade A consists
Phosphate, Coating Thickness, µm h
2
of a zinc phosphate coating with no additional sealer (dry),
g/m
A
GradeBconsistsofazincphosphatecoatingwithadryorganic
Grade A 11, min none see 5.3 72
sealer, Grade C, and Grade D.1.2This specification is intended Grade B 11, min sealer see 5.3 72
Grade C 11, min protective oil-type see 5.3 24
primarily for fasteners such as nuts, clips, washers, and other
compound
ferrous threaded and non-threaded fasteners that require cor-
Grade D 11, min protective oil-type see 5.3 72
compound
rosion protection.
A
1.2 This specification is intended primarily for fasteners When testing Grade A finished parts, a protective oil coating shall be added
before salt spray testing.
such as nuts, clips, washers, and other ferrous threaded and
non-threaded fasteners that require corrosion protection.
4.1.3 Any additions agreed upon between the purchaser and
1.3 These coatings may or may not have a decorative finish.
the supplier.
2. Referenced Documents
5. Requirements
2
2.1 ASTM Standards:
5.1 Appearance—Unless otherwise agreed upon between
B117 Practice for Operating Salt Spray (Fog) Apparatus
the purchaser and the producer, the color of the protective
F1470 Practice for Fastener Sampling for Specified Me-
coating shall be as-coated gray for Grades A, B, C, and D.
chanical Properties and Performance Inspection
5.2 Corrosion Resistance—These coatings shall be capable
of withstanding neutral salt spray for the minimum h specified
3. Classification
inTable 1 with no base metal corrosion on significant surfaces.
3.1 The zinc phosphate treatment and subsequent protective
Significant surfaces on threaded fasteners are defined as the
coatings are classified into four grades according to the
exposed surfaces when the fasteners are installed in a normal
requirements shown in Table 1.
manner (bolt head, nut head, face, etc.). On other surfaces
where control of the coating cannot be obtained under normal
4. Ordering Information
processing such as holes, recesses, threads, etc., the above
4.1 Orders for material under this specification shall include
requirements do not apply.
the following information:
5.3 Thread Fit—The maximum thickness of coating which
4.1.1 Quantity of parts,
may be applied to threads on threaded products is limited by
4.1.2 Grade required (see Table 1), and
the basic thread size (see 8.2). Threads may be produced
undersize/oversize (before coating) to accommodate the coat-
1
This specification is under the jurisdiction of ASTM Committee F16 on ing thickness, providing the finished product (after coating)
Fasteners and is the direct responsibility of Subcommittee F16.03 on Coatings on
meets all specified mechanical properties. All undersize/
Fasteners.
oversize must be within permissible limits as agreed upon
Current edition approved May 1, 2011. Published May 2011. Originally
between the supplier and the purchaser.
approved in 1988. Last previous edition approved in 2006 as F1137 – 00(2006).
DOI: 10.1520/F1137-11.
5.4 Dry-to-Touch—Grade C shall be evenly coated and
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
dry-to-touchsuchthatwhenheldwithfilterpaperorequivalent
contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM
and applying hand pressure for 5 to 10 s, there shall be no
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website. visible staining of the filter paper when viewed without use of
*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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F1137 – 11
supplementary magnification. For referee purposes, this test
W = mass of deposit, g,
2
shall be performed using a force of 10 N as measured with a
A = area of deposit, m , and
3
load-indicating gage.
D = density of coating, kg/m .
6. Sampling
8. Inspection
6.1 The purchaser may request samples in accordance with
8.1 Samples shall be taken in accordance with Practice
Practice F1470.
F1470.
8.2 Ref
...

This document is not anASTM standard and is intended only to provide the user of anASTM 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:F1137–00 (Reapproved 2006) Designation: F1137 – 11
Standard Specification for
Phosphate/Oil and Phosphate/Organic Corrosion Protective
1
Coatings for Fasteners
This standard is issued under the fixed designation F1137; 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
1.1This specification covers the basic requirements for seven grades of corrosion protection for fasteners. Grade 0Aconsists of
a zinc phosphate coating with no additional sealer (dry), Grade 0B consists of a zinc phosphate coating with a dry organic sealer,
Grade 0C, Grade 0D, and Grade I consist of a zinc phosphate coating with supplemental protective oil type compound, and Grades
II and III consist of a zinc phosphate with a supplemental zinc-rich epoxy resin coating (Grade II includes a clear organic topcoat).
*
1.1 This specification covers the basic requirements for four grades of corrosion protection for fasteners. Grade A consists of
a zinc phosphate coating with no additional sealer (dry), Grade B consists of a zinc phosphate coating with a dry organic sealer,
Grade C, and Grade D.1.2 This specification is intended primarily for fasteners such as nuts, clips, washers, and other ferrous
threaded and non-threaded fasteners that require corrosion protection.
1.2 This specification is intended primarily for fasteners such as nuts, clips, washers, and other ferrous threaded and
non-threaded fasteners that require corrosion protection.
1.3 These coatings may or may not have a decorative finish.
2. Referenced Documents
2
2.1 ASTM Standards:
B117 Practice for Operating Salt Spray (Fog) Apparatus D2247Practice for Testing Water Resistance of Coatings in 100 %
Relative Humidity
D3359Test Methods for Measuring Adhesion by Tape Test
F1470 Practice for Fastener Sampling for Specified Mechanical Properties and Performance Inspection
3. Classification
3.1 The zinc phosphate treatment and subsequent protective coatings are classified into sevenfour grades according to the
requirements shown in Table 1. Phosphate bath concentrations, temperatures and immersion times recommended by the chemical
manufacture should be followed. .
4. Ordering Information
4.1 Orders for material under this specification shall include the following information:
4.1.1 Quantity of parts,
4.1.2 Grade required (see Table 1), and
4.1.3 Any additions agreed upon between the purchaser and the supplier.
5. Requirements
5.1 Appearance—Unless otherwise agreed upon between the purchaser and the producer, the color of the protective coating
shall be as-coated gray for Grades 0A, 0B, 0C, and 0D, black for Grade I, and metallic gray for Grades II and III. In addition,
Grades II and III shall be free from tears, sags, and excess coating that may affect appearance or performance, or both. —Unless
otherwise agreed upon between the purchaser and the producer, the color of the protective coating shall be as-coated gray for
Grades A, B, C, and D.
5.2 Adhesion—The coating for Grades II and III shall show no evidence of blistering nor other appearance changes after
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 JuneMay 1, 2006.2011. Published June 2006.May 2011. Originally approved in 1988. Last previous edition approved in 20002006 as
F1137 – 00(2006). DOI: 10.1520/F1137-00R06.10.1520/F1137-11.
2
For referencedASTM standards, visit theASTM website, www.astm.org, or contactASTM Customer Service at [e-mail]. ForAnnualBookofASTMStandards
volume information, refer to the standard’s Document Summary page on 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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F1137 – 11
TABLE 1 Classification and Performance Requirements of
Protective Coatings
Grade No. Zinc Supplemental Coating Salt Spray,
Phosphate, Coating Thickness, µm h
2
g/m
A
Grade 0 A 11, min none see 5.5 72
A
Grade A 11, min none see 5.3 72
Grade 0 B 11, min sealer see 5.5 72
Grade B 11, min sealer see 5.3 72
Grade 0 C 11, min protective oil-type see 5.5 24
compound
Grade C 11, min protective oil-type
...