ASTM F1137-00

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

SCOPE
1.1 This specification covers the basic requirements for seven grades of corrosion protection for fasteners. 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, 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).
1.2 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: 09-Jun-2000
• 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

• Replaced By: ASTM F1137-00(2006) - Standard Specification for Phosphate/Oil and Phosphate/Organic Corrosion Protective Coatings for Fasteners
• Effective Date: 01-Jun-2006
• 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: 10-Jun-2000
• Referred By: ASTM F1940-07a(2019) - Standard Test Method for Process Control Verification to Prevent Hydrogen Embrittlement in Plated or Coated Fasteners
• Effective Date: 10-Jun-2000

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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.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: F 1137 – 00
Standard Specification for
Phosphate/Oil and Phosphate/Organic Corrosion Protective
1
Coatings for Fasteners
This standard is issued under the fixed designation F 1137; 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.
TABLE 1 Classification and Performance Requirements of
1. Scope
Protective Coatings
1.1 This specification covers the basic requirements for
Grade No. Zinc Supplemental Coating Salt Spray,
seven grades of corrosion protection for fasteners. Grade 0A
Phosphate, Coating Thickness, h
2
consists of a zinc phosphate coating with no additional sealer
g/m µm
A
(dry), Grade 0B consists of a zinc phosphate coating with a dry
Grade 0A 11, min none see 5.5 72
organic sealer, Grade 0C, Grade 0D, and Grade I consist of a Grade 0B 11, min sealer see 5.5 72
Grade 0C 11, min protective oil-type see 5.5 24
zinc phosphate coating with supplemental protective oil type
compound
compound, and Grades II and III consist of a zinc phosphate
Grade 0D 11, min protective oil-type see 5.5 72
compound
with a supplemental zinc-rich epoxy resin coating (Grade II
Grade I 26–32 protective oil-type see 5.5 168
includes a clear organic topcoat).
compound
B
1.2 This specification is intended primarily for fasteners
Grade II 13–16 zinc-rich resin 15–25 240
flake
such as nuts, clips, washers, and other ferrous threaded and
Grade III 13–16 zinc-rich resin 10–20 400
non-threaded fasteners that require corrosion protection.
C
powder
1.3 These coatings may or may not have a decorative finish.
A
When testing Grade 0A finished parts, a protective oil coating shall be added
before salt spray testing.
2. Referenced Documents B
Zinc-rich resin to contain 60 % minimum metallic zinc flake by volume with 14
to 16 % aluminum.
2.1 ASTM Standards:
C
Zinc-rich resin to contain 80 % minimum metallic zinc powder by volume with
2
B 117 Practice for Operating Salt Spray (Fog) Apparatus
trace aluminum.
D 2247 PracticeforTestingWaterResistanceofCoatingsin
3
100 % Relative Humidity
4.1.1 Quantity of parts,
D 3359 Test Methods for Measuring Adhesion by Tape
4.1.2 Grade required (see Table 1), and
3
Test
4.1.3 Any additions agreed upon between the purchaser and
F 1470 GuideforFastenerSamplingforSpecifiedMechani-
the supplier.
4
cal Properties and Performance Inspection
5. Requirements
3. Classification
5.1 Appearance—Unless otherwise agreed upon between
3.1 The zinc phosphate treatment and subsequent protective
the purchaser and the producer, the color of the protective
coatings are classified into seven grades according to the
coating shall be as-coated gray for Grades 0A, 0B, 0C, and 0D,
requirements shown inTable 1. Phosphate bath concentrations,
black for Grade I, and metallic gray for Grades II and III. In
temperatures and immersion times recommended by the
addition, Grades II and III shall be free from tears, sags, and
chemical manufacture should be followed.
excess coating that may affect appearance or performance, or
both.
4. Ordering Information
5.2 Adhesion—The coating for Grades II and III shall show
4.1 Orders for material under this specification shall include
no evidence of blistering nor other appearance changes after
the following information:
exposure to humidity testing for 96-h minimum. It shall show
no more than 3.0-mm peal-back from intersection of lines
scribed and tape tested immediately after a 10-min recovery
1
This specification is under the jurisdiction of ASTM Committee F16 on
period following exposure, and no other peeling in area under
FastenersandisthedirectresponsibilityofSubcommitteeF16.03onMetalCoatings
the tape.
on Threaded Fasteners.
Current edition approved June 10, 2000. Published August 2000. Originally
5.3 Corrosion Resistance—These coatings shall be capable
published as F 1137 – 88. Last previous edition F 1137 – 88 (1993).
of withstanding neutral salt spray for the minimum h specified
2
Annual Book of ASTM Standards, Vol 03.02.
3
inTable 1 with no base metal corrosion on significant surfaces.
Annual Book of ASTM Standards, Vol 06.01.
4
Annual Book of ASTM Standards, Vol 01.08. Significant surfaces on threaded fasteners are defined as the
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F 1137
exposed surfaces when the fasteners are installed in a normal a coating thickness (see note). Coating thickness, for referee
manner (bolt head, nut head, face, etc.). On other surfaces purposes, shall be measured by microscopic examination.
where control of the coating cannot be obtai
...