ASTM D5009-96(2002)
(Test Method)Standard Test Method for Evaluating and Comparing Transfer Efficiency of Spray Applied Coatings Under Laboratory Conditions
Standard Test Method for Evaluating and Comparing Transfer Efficiency of Spray Applied Coatings Under Laboratory Conditions
SCOPE
1.1 This test method covers the evaluation and comparison of the transfer efficiency of spray-applied coatings under controlled laboratory conditions.
1.2 This test method has been shown to yield excellent intralaboratory reproducibility. Interlaboratory precision is poorer and is highly dependent on closely controlled air flow in the spray booth, the rate at which the paint is delivered to the part, and other variables suggested in the test method.
1.3 Limitations
1.3.1 This laboratory procedure only indicates the direction of the effect of spray variables on transfer efficiency. The magnitude of the effect is determined only by specific plant experience.
Note 1—This laboratory procedure requires specific equipment and procedures. For those laboratories that do not have access to the type of equipment required a more general laboratory procedure is being prepared as Procedure B.
1.4 The values stated in inch-pound units are to be regarded as the standard. The values given in parentheses are for information only.
1.5 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. For specific hazard statements, see Section 9 and Note 2 and Note 3.
General Information
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Standards Content (Sample)
NOTICE: This standard has either been superseded and replaced by a new version or discontinued.
Contact ASTM International (www.astm.org) for the latest information.
Designation: D 5009 – 96 (Reapproved 2002)
Standard Test Method for
Evaluating and Comparing Transfer Efficiency of Spray
Applied Coatings Under Laboratory Conditions
This standard is issued under the fixed designation D 5009; 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.
1. Scope 2.2 National Fire Protection Association Documents
NFPA 33 Spray Application Using Flammable and Combus-
1.1 This test method covers the evaluation and comparison
tible Materials
of the transfer efficiency of spray-applied coatings under
NFPA 86 Standard for Ovens and Furnaces
controlled laboratory conditions.
1.2 This test method has been shown to yield excellent
3. Terminology
intralaboratory reproducibility. Interlaboratory precision is
3.1 Definitions of Terms Specific to This Standard:
poorer and is highly dependent on closely controlled air flow in
3.1.1 conveyor speed—the speed of the conveyor in centi-
the spray booth, the rate at which the paint is delivered to the
meters per minute during the test.
part, and other variables suggested in the test method.
3.1.2 fluid mass flow rate—the mass flow rate of paint in
1.3 Limitations:
grams per minute during the test.
1.3.1 This laboratory procedure only indicates the direction
3.1.3 mass of foil—the weight of each target foil in grams
of the effect of spray variables on transfer efficiency. The
before being painted.
magnitude of the effect is determined only by specific plant
3.1.4 mass of foil plus paint solids—the weight of each
experience.
target foil in grams after being painted and baked.
NOTE 1—This laboratory procedure requires specific equipment and
3.1.5 mass of paint solids—the difference in the mass of the
procedures. For those laboratories that do not have access to the type of
foils before painting and the mass of the foils after painting and
equipment required a more general laboratory procedure is being prepared
baking. This is the sum of the mass of the foil plus paint solids
as Procedure B.
less the sum of the mass of the foil.
1.4 The values stated in inch-pound units are to be regarded
3.1.6 transfer effıciency—the ratio of the mass of the paint
as the standard. The values given in parentheses are for
solids deposited on the foil to the mass of the paint solids
information only.
sprayed during the test expressed as a percent.
1.5 This standard does not purport to address all of the
3.1.7 weight percent solids—the solids content in percent of
safety concerns, if any, associated with its use. It is the
the total weight of a sample of the paint used during the test.
responsibility of the user of this standard to establish appro-
priate safety and health practices and determine the applica- 4. Summary of Test Method
bility of regulatory limitations prior to use. For specific hazard
4.1 Metal panels covered with preweighed aluminum foil
statements, see Section 9 and Note 2 and Note 3.
are conveyed in a spraybooth past a fixed spraygun. The coated
foils are then baked to remove volatile matter. The transfer
2. Referenced Documents
efficiency is calculated on a weight basis using the solids
2.1 ASTM Standards:
content and quantity of the paint sprayed and the amount of
D 1200 Test Method for Viscosity by Ford Viscosity Cup
solids on the coated aluminum foil target.
D 2369 Test Method for Volatile Content of Coatings
D 3925 Practice for Sampling Liquid Paints and Related
5. Significance and Use
Pigmented Coatings
5.1 Subject to the limitations listed above, the procedure can
be used as a research tool to optimize spray equipment and
This test method is under the jurisdiction of ASTM Committee D01 on Paint paint formulations as well as to study the relative effect on
and Related Coatings, Materials, and Applications and is the direct responsibility of
Subcommittee D01.55 on Factory Applied Coatings on Preformed Products.
Current edition approved Nov. 10, 1996. Published January 1997. Originally
published as D 5009 – 89. Last previous edition D 5009 – 89. Available from National Fire Protection Assn., Batterymarch Park, Quincy, MA
Annual Book of ASTM Standards, Vol 06.01. 02269–9101.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
NOTICE: This standard has either been superseded and replaced by a new version or discontinued.
Contact ASTM International (www.astm.org) for the latest information.
D 5009
transfer efficiency of changing operating variables, spray 8.2 Agitate paint in a closed container at least 30 min before
application equipment, and types of coatings. any paint samples are taken.
8.3 Using an airtight container take a paint grab sample
6. Apparatus
from the paint pot in accordance with Practice D 3925.
6.1 Laboratory Scale, accurate to 60.001 g for weight
8.4 Determine and record the following from the paint
percent solids determination. sample:
6.2 Platform Scale, accurate, or equivalent, to 60.01 g for
8.4.1 Viscosity determined in accordance with Test Method
mass of foil, mass of foil plus paint, and mass flow rate D 1200.
instrumentation calibration.
8.4.2 Weight percent solids determined in accordance with
6.3 Mass Flow Rate Meter, or mass flow rate determination Test Method D 2369. If the baking temperature in Test Method
method, accurate to 62 % of the mass flow rate to be used
D 2369 is inadequate, use the manufacturers recommended
during the test. cure schedule.
6.4 Conveyor Timer or conveyor timing method, accurate
8.4.3 Resistivity for the samples being applied electrostati-
to 61 % of the conveyor speed to be used during the test. The cally (An ASTM method is under development).
equipment may consist of photoelectric cells or limit switches
8.5 Set up the conveyor speed measuring equipment.
used in conjunction with a digital timer or timing marks on the 8.6 Cut the aluminum foil to dimensions of 15 in. (38 cm)
conveyor used in conjunction with a stopwatch. Take at least
by approximately 50 in. (127 cm) or 2 in. (5 cm) longer than
two readings with a stopwatch and average the readings. the length of the target panel.
6.5 Targets, consisting of a set of ten steel panels 6 in. (15.2
8.7 Consecutively number each precut foil strip before
cm) wide by 0.0625 in. (0.15875 cm) with 0.25-in. (0.635-cm)
weighing using a permanent marking pen.
radius corners. A minimum panel length of 48 in. (121.9 cm) 8.8 Weigh each test foil strip and record the uncoated
should be used. The length of the panel should be set so that a
weight and the foil number.
minimum of 12 in. (30.4 cm) above and below the spray 8.9 Attach the preweighed, labeled test foil to six targets
pattern is achieved.
using the technique shown in Fig. 1. Attach the unlabeled foil
6.5.1 It is essential to do this so that the entire height of the on four scavenger targets as shown in Fig. 1.
spray pattern is effectively captured.
8.10 Mount the foil covered targets in consecutive order as
6.6 Aluminum Foil, medium temper or equivalent, 1.5 mil shown in Fig. 2, with the foil seam on each target facing away
(0.0037 cm) thick.
from the spray gun.
6.7 Back-Draw Water Wash Spray Booth, or equivalent. The 8.10.1 If electrostatic equipment is being used the resistance
booth should be a minimum of 6 ft (1.8 m) wide and capable
shall be less than 1 by 10 V between the target and the earth
of up to 120 ft/min (0.61 m/s) air velocity in the middle at the ground in accordance with Chapter 9-8 of NFPA 33.
plane of the target. If a dry filter booth is used, filters should be
8.11 Adjust the following equipment operating parameters
changed as necessary to maintain uniform air velocity. to the values desired for testing:
6.8 Adjustable Rate Overhead Conveyor System, capable of
hanging targets as specified, and capable of up to 40 ft/min
(0.20 m/s) or the maximum speed desired by the user.
6.9 Forced Draft Curing Oven, of sufficient size for curing
targets, and capable of achieving and maintaining the cure
temperatures specified by the paint supplier. All ovens should
conf
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