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ASTM G14-04(2010)

(Test Method)

Standard Test Method for Impact Resistance of Pipeline Coatings (Falling Weight Test)

Standard Test Method for Impact Resistance of Pipeline Coatings (Falling Weight Test)

SIGNIFICANCE AND USE
The ability of a pipe coating to resist mechanical damage during shipping, handling, and installation will depend upon its impact resistance. This test method provides a systematic means for screening coating materials with regard to this property.
SCOPE
1.1 This test method covers the determination of the energy required to rupture coatings applied to pipe under specified conditions of impact from a falling weight.
1.2 The values stated in SI units to three significant decimals are to be regarded as the standard. The values given in parentheses are for information only.
1.3 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
30-Nov-2010
ICS
87.040 - Paints and varnishes
Technical Committee
D01 - Paint and Related Coatings, Materials, and Applications
Drafting Committee
D01.48 - Durability of Pipeline Coating and Linings
Current Stage
Ref Project

Relations

Replaces
ASTM G14-04 - Standard Test Method for Impact Resistance of Pipeline Coatings (Falling Weight Test)
Effective Date
01-Dec-2010
Referred By
ASTM A934/A934M-22 - Standard Specification for Epoxy-Coated Prefabricated Steel Reinforcing Bars
Effective Date
01-Dec-2010
Referred By
ASTM D8104-17(2023) - Standard Guide for Determining Coating Qualification Test Data Applicability
Effective Date
01-Dec-2010
Referred By
ASTM A950/A950M-11(2023) - Standard Specification for Fusion-Bonded Epoxy-Coated Structural Steel H-Piles and Sheet Piling
Effective Date
01-Dec-2010
Referred By
ASTM A972/A972M-00(2021) - Standard Specification for Fusion Bonded Epoxy-Coated Pipe Piles
Effective Date
01-Dec-2010
Referred By
ASTM D6577-15(2019) - Standard Guide for Testing Industrial Protective Coatings
Effective Date
01-Dec-2010
Referred By
ASTM A775/A775M-22 - Standard Specification for Epoxy-Coated Steel Reinforcing Bars
Effective Date
01-Dec-2010
Referred By
ASTM F2896-23 - Standard Specification for Reinforced Polyethylene Composite Pipe For The Transport Of Oil And Gas And Hazardous Liquids
Effective Date
01-Dec-2010
Referred By
ASTM A1055/A1055M-22 - Standard Specification for Zinc and Epoxy Dual-Coated Steel Reinforcing Bars
Effective Date
01-Dec-2010
Referred By
ASTM G11-19 - Standard Practice for Effects of Outdoor Weathering on Pipeline Coatings
Effective Date
01-Dec-2010
Referred By
ASTM A1124/A1124M-23 - Standard Specification for Textured Epoxy-Coated Steel Reinforcing Bars
Effective Date
01-Dec-2010
Referred By
ASTM D7230-06(2021) - Standard Guide for Evaluating Polymeric Lining Systems for Water Immersion in Coating Service Level III Safety-Related Applications on Metal Substrates
Effective Date
01-Dec-2010
Referred By
ASTM G74-13(2021) - Standard Test Method for Ignition Sensitivity of Nonmetallic Materials and Components by Gaseous Fluid Impact
Effective Date
01-Dec-2010
Referred By
ASTM A882/A882M-20 - Standard Specification for Filled Epoxy-Coated Seven-Wire Steel Prestressing Strand
Effective Date
01-Dec-2010

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ASTM G14-04(2010) - Standard Test Method for Impact Resistance of Pipeline Coatings (Falling Weight Test)ASTM G14-04(2010) - Standard Test Method for Impact Resistance of Pipeline Coatings (Falling Weight Test)
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ASTM G14-04(2010) - Standard Test Method for Impact Resistance of Pipeline Coatings (Falling Weight Test)
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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: G14 − 04 (Reapproved 2010)
StandardTest Method for
Impact Resistance of Pipeline Coatings (Falling Weight
Test)
This standard is issued under the fixed designation G14; 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 (´) indicates an editorial change since the last revision or reapproval.
1. Scope 4. Significance and Use
1.1 This test method covers the determination of the energy 4.1 The ability of a pipe coating to resist mechanical
required to rupture coatings applied to pipe under specified damage during shipping, handling, and installation will depend
conditions of impact from a falling weight. upon its impact resistance. This test method provides a
systematic means for screening coating materials with regard
1.2 The values stated in SI units to three significant deci-
to this property.
mals are to be regarded as the standard. The values given in
parentheses are for information only.
5. Apparatus
1.3 This standard does not purport to address all of the
5.1 This test method can be successfully used with impact
safety concerns, if any, associated with its use. It is the
apparatus conforming to the following specifications:
responsibility of the user of this standard to establish appro-
5.1.1 Tup—The tup shall be made up from a tup body and a
priate safety and health practices and determine the applica-
tup nose having a combined, fixed weight of 1.361 kg (3.00 lb)
bility of regulatory limitations prior to use.
and shall be used over a drop range of 0.61 to 1.22 m (2 to 4
ft). With most coatings, a 1.361-kg (3.00-lb) tup dropped
2. Referenced Documents
through a distance of 914 mm (3 ft) yields suitable results. The
2.1 ASTM Standards: tup nose shall have a 15.875-mm ( ⁄8-in.) hemispherical head.
G12 Test Method for Nondestructive Measurement of Film
NOTE 1—Frequent replacement of the tup nose can be avoided if it is
Thickness of Pipeline Coatings on Steel
cut from steel capable of being hardened to a hardness of Rockwell C/45
G62 Test Methods for Holiday Detection in Pipeline Coat-
while retaining an impact toughness of at least 15 ft·lb (20.34 J). Ball
bearings conforming to SAE Grade 52100 have also been found suitable
ings
for this purpose.
2.2 SAE Standard:
5.1.2 Drop Tube—Atube 1.52 m (5 ft) long shall be used to
Grade 52100 Steel
containthetupandguideitduringfreefall.Thedroptubeshall
3. Summary of Test Method be constructed of steel, aluminum, or any other suitably rigid
material and internally sized to provide a minimum of friction
3.1 This test method uses a falling fixed weight having a
to the falling tup. A scale shall be attached for measuring the
specified diameter impact surface, tup, which is restrained
height of drop to the nearest 2.54 mm (0.10 in.).
vertically and dropped from varying heights to produce impact
5.1.3 Specimen Holder—The base plate of the apparatus
energies over the required range. Electrical inspection is used
shall include a device for positioning and holding the pipe
to detect resultant breaks in the coating. Impact resistance is
specimen on line with the axis of the vertical drop tube.
determined as the amount of energy required to cause penetra-
tion of the coating film.
NOTE 2—An arrangement using a V-notch vise made of metal with
springclampisrecommendedforthispurpose.Glancingblows,causedby
an out-of-plumb condition between drop tube and pipe sample, will cause
erratic test results.
This test method is under the jurisdiction of ASTM Committee D01 on Paint
and Related Coatings, Materials, andApplications and is the direct responsibility of
5.1.4 Apparatus Support—Both the apparatus and sample
Subcommittee D01.48 on Durability of Pipeline Coating and Linings.
shall be firmly supported and secured to a rigid base to
Current edition approved Dec. 1, 2010. Published December 2010. Originally
optimize energy transfer from the tup to the specimen.
approved in 1969. Last previous edition approved in 2004 as G14 – 04. DOI:
10.1520/G0014-04R10.
5.2 A design for the test apparatus appears in Figs. X1.1-
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
X1.3 of Appendix X1.
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
Standards volume information, refer to the standard’s Document Summary page on
5.3 Thickness Gage—Measurements of coating thickness
the ASTM website.
will be required for this test, and shall be done in accordance
Available from SAE International (SAE), 400 Commonwealth Dr.,Warrendale,
PA 15096-0001, http://www.sae.org. with Test Method G12.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
G14 − 04 (Reapproved 2010)
5.4 Holiday Detector—A suitable detector as specified in 9.4 If the coating film is penetrated on the initial drop, make
Test Methods G62 shall be used to locate breaks in the coating the next test at the next lower height increment. If the first
film. specimen does not fail, make the second test at the next higher
increment.
6. Test Specimen
9.5 In a similar manner, determine the height of fall by the
performance of the coating on each preceding drop. Maintain a
6.1 The test specimen shall be a 406.4 mm (16 in.) long
constant height increment between readings. Continue to apply
piece of Schedule 40, 60.325 mm (2.375 in.) outside diameter
this “up-and-down” method until 20 successive impact read-
coated pipe prepared with its surface preparation and coating
ings have been made.
procedures equivalent to that of production coated pipe.
6.2 Seven specimens shall be required for the test.
10. Calculation
10.1 Calculate the mean value of impact strength, m,in
7. Conditioning
g/cm (or in./lb) as follows:
7.1 The specimen shall be exposed to a room temperature of
A 1
m 5 h 1d 6 3W (1)
21 to 25°C (70 to 77°F) for a period of 24 h before beginning F S DG
N 2
the test.
where:
h = minimum height at which the less frequent event
8. Preliminary Measurements
occurs, cm (or in.),
8.1 Measure the applied coating thickness of each specimen
d = increment in height of drop, cm (or in.),
in accordance with Test Method G12.
A = sum of the frequency of occurrence at each height
8.2 Place test specimen in sample holder and lightly place increment times the number of increments above the
tup on surface of the coating.Adjust either the drop tube or the h value for each observation in the N total,
attached scale so that the wing bolt (lifting pin) is at the zero N = total number of the less frequent event (coating fail-
ures or nonfailures), and
mark of the scale.
W = tup weight, g (or lb).
8.3 Make a pre
...

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1.1 This test method covers a procedure for rapidly deforming by impact a coating film and its substrate and for evaluating the effect of such deformation.  
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