ASTM G6-88(1998)
(Test Method)Standard Test Method for Abrasion Resistance of Pipeline Coatings (Withdrawn 2007)
Standard Test Method for Abrasion Resistance of Pipeline Coatings (Withdrawn 2007)
SCOPE
1.1 This test method of accelerated test is a procedure for determining the relative resistance of steel pipeline coatings to abrasion by a slurry of coarse abrasive and water. The method is intended to apply to the testing of all types of electrical insulating pipeline coatings and tapes, including thermoplastics, thermoset, and bituminous materials.
1.2 Pipeline coatings are not normally subjected to the type of abrasion herein specified.
1.3 Metallic protective coatings such as zinc may be compared visually, but do not meet the electrical requirements of this test method.
1.4 The values stated in SI units to three significant decimals are to be regarded as the standard.
1.5 This standard does not purport to address all of the safety problems, 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.
WITHDRAWN RATIONALE
This test method of accelerated test is a procedure for determining the relative resistance of steel pipeline coatings to abrasion by a slurry of coarse abrasive and water. The method is intended to apply to the testing of all types of electrical insulating pipeline coatings and tapes, including thermoplastics, thermoset, and bituminous materials.
Formerly under the jurisdiction of Committee D01 on Paint and Related Coatings, Materials, and Applications, this test method was withdrawn in March 2007 in accordance with section 10.5.3.1 of the Regulations Governing ASTM Technical Committees, which requires that standards shall be updated by the end of the eighth year since the last approval date.
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Standards Content (Sample)
NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
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Designation:G6–88(Reapproved1998)
Standard Test Method for
Abrasion Resistance of Pipeline Coatings
This standard is issued under the fixed designation G 6; the number immediately following the designation indicates the year of original
adoption or, in the case of revision, the year of last revision.Anumber in parentheses indicates the year of last reapproval.Asuperscript
epsilon (e) indicates an editorial change since the last revision or reapproval.
1. Scope ends of the drum and are electrically insulated from contact
with the test apparatus.
1.1 This test method of accelerated test is a procedure for
4.2 Periodic measurement of the electrical resistance be-
determining the relative resistance of steel pipeline coatings to
tween the specimen and the drum indicates the degree of
abrasion by a slurry of coarse abrasive and water. The method
abrasion resistance of the coating.
is intended to apply to the testing of all types of electrical
insulating pipeline coatings and tapes, including thermoplas-
5. Significance and Use
tics, thermoset, and bituminous materials.
5.1 This procedure defines a test method for comparing the
1.2 Pipeline coatings are not normally subjected to the type
relative resistance of pipeline coatings to abrasion.
of abrasion herein specified.
5.2 Abrasion resistance may be used to specify optimum
1.3 Metallic protective coatings such as zinc may be com-
coating thickness of candidate materials both in development
pared visually, but do not meet the electrical requirements of
and research work to study new coating systems or methods
this test method.
and in quality control.
1.4 The values stated in SI units to three significant deci-
mals are to be regarded as the standard. The values given in
6. Apparatus
parentheses are for information only.
6.1 Drum—Acylindrical steel container suitable for testing
1.5 This standard does not purport to address all of the
nine specimens simultaneously. Figs. 1-3 show construction
safety concerns, if any, associated with its use. It is the
details which may be altered at the cap assembly if desired. A
responsibility of the user of this standard to establish appro-
valve shall be provided to release any pressure built up during
priate safety and health practices and determine the applica-
test.
bility of regulatory limitations prior to use.
6.2 Apparatus for Revolving the Drum—Any suitable appa-
2. Referenced Documents ratus used to revolve the drum at 30.48 m (100 linear ft)/min.
A modified jar rolling mill has been found satisfactory for
2.1 ASTM Standards:
revolving the drum.
G12 Test Method for Nondestructive Measurement of Film
2 6.3 Thickness Gage, to be used in accordance with Test
Thickness of Pipeline Coatings on Steel
MethodG12.
G62 Test Methods for Holiday Detection in Pipeline Coat-
2 6.4 Holiday Detectors, low-voltage wet-sponge type for
ings
thin film coatings (coatings thinner than 20 mils), and high-
3. Terminology voltage type for thick film coatings (coatings thicker than 20
mils).
3.1 Definition:
3.1.1 holidays—small faults or pinholes which permit
NOTE 1—Low voltage detectors are used to locate pinholes, voids, or
current drainage through protective coatings on steel pipe. thin spots in pipeline coatings. The potential used with wet-sponge
detectors can be up to 100 V DC. Procedures for using these detectors are
4. Summary of Test Method
found in MethodAof G 62. For use of high voltage detectors operating in
the 900 to 20 000 Vdc range, see Method B of G 62.
4.1 Apparatus and materials are described whereby coatings
on steel pipe are worn away by an abrasive slurry contained in 6.5 Volt-ohm-meter—Any electrical test instrument for
a horizontally revolving drum. Specimens extend through both measuring electrical resistance of the circuit.
1 3
This test method is under the jurisdiction of ASTM Committee D-1 on Paint The sole source of supply known to the committee at this time, to provide a
and Related Coatings, Materials, andApplications and is the direct responsibility of means for revolving the drum is Figure 801-V Jar Mill available from U.S.
Subcommittee D01.48 on Durability of Pipeline Coatings and Linings. Stoneware,Inc.,Akron,OH.Ifyouareawareofalternativesuppliers,pleaseprovide
Current edition approved May 27, 1988. Published July 1988. Originally this information to ASTM Headquarters. Your comments will receive careful
published asG6–69T. Last previous editionG6–83. consideration at a meeting of the responsible technical committee, which you may
Annual Book of ASTM Standards, Vol 06.02. attend.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
G6–88 (1998)
Dimensions for Fig. 1:
Symbol mm in.
A 0.15 0.006
B 2.28 0.090
C 3.17 0.125
D 4.76 0.188
E 6.35 0.250
F 19.05 0.750
G 25.40 1.000
H 31.75 1.125
I 38.10 1.500
J 47.63 1.875
K 136.53 5.375
L 149.23 5.875
M 355.6 14.0
N 406.4 16.0
NOTE 1—Estimated weight includes water and abrasive 39.5 kg (87 lb)
FIG. 1 Abrasion-Tester Assembly
7. Reagents and Materials 9. Conditioning
7.1 The test slurry shall consist of the following: 9.1 The specimen shall be exposed to a room temperature of
7.1.1 Aluminum Oxide Grit, 13.6 kg (30 lb). 21° to 25°C (70° to 77°F) for a period of 24 h before beginning
7.1.2 Tap Water, 5.68 L (1 ⁄2 gal). the test.
8. Test Specimen 10. Procedure
10.1 Perform the test at a room temperature of 21° to 25°C
8.1 A19.1 mm test specimen 406 mm (16 in.) long shall be
prepared with its surface preparation and coati
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