ASTM F735-22

Standard Test Method for Abrasion Resistance of Transparent Plastics and Coatings Using the Oscillating Sand Method

SIGNIFICANCE AND USE
4.1 Plastic materials, when used as transparencies, covers, or enclosures, are subject to wiping, cleaning, or other types of rubbing actions that cause abrasion. It is the intent of this test method to provide a means of estimating the resistance of such materials to this type and degree of abrasion.
SCOPE
1.1 This test method determines the resistance of transparent plastics and transparent coatings utilized in windows or viewing ports to surface abrasion using oscillating sand.  
1.2 Units—The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.  
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, health, and environmental practices and determine the applicability of regulatory limitations prior to use.  
1.4 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

General Information

• Status: Published
• Publication Date: 30-Apr-2022
• ICS: 25.220.60 - Organic coatings
• Technical Committee: F07 - Aerospace and Aircraft
• Drafting Committee: F07.08 - Transparent Enclosures and Materials

Relations

• Refers: ASTM E177-14 - Standard Practice for Use of the Terms Precision and Bias in ASTM Test Methods
• Effective Date: 01-May-2014
• Refers: ASTM E11-13 - Standard Specification for Woven Wire Test Sieve Cloth and Test Sieves
• Effective Date: 01-Oct-2013
• Refers: ASTM E177-13 - Standard Practice for Use of the Terms Precision and Bias in ASTM Test Methods
• Effective Date: 01-May-2013
• Refers: ASTM E691-13 - Standard Practice for Conducting an Interlaboratory Study to Determine the Precision of a Test Method
• Effective Date: 01-May-2013
• Refers: ASTM E691-11 - Standard Practice for Conducting an Interlaboratory Study to Determine the Precision of a Test Method
• Effective Date: 01-Nov-2011
• Refers: ASTM D1003-11e1 - Standard Test Method for Haze and Luminous Transmittance of Transparent Plastics
• Effective Date: 15-Apr-2011
• Refers: ASTM D1003-11 - Standard Test Method for Haze and Luminous Transmittance of Transparent Plastics
• Effective Date: 15-Apr-2011
• Refers: ASTM E177-10 - Standard Practice for Use of the Terms Precision and Bias in ASTM Test Methods
• Effective Date: 01-Oct-2010
• Refers: ASTM E11-09e1 - Standard Specification for Woven Wire Test Sieve Cloth and Test Sieves
• Effective Date: 01-May-2009
• Refers: ASTM D618-08 - Standard Practice for Conditioning Plastics for Testing
• Effective Date: 01-Nov-2008
• Refers: ASTM E177-08 - Standard Practice for Use of the Terms Precision and Bias in ASTM Test Methods
• Effective Date: 01-Oct-2008
• Refers: ASTM E691-08 - Standard Practice for Conducting an Interlaboratory Study to Determine the Precision of a Test Method
• Effective Date: 01-Oct-2008
• Refers: ASTM D1003-07 - Standard Test Method for Haze and Luminous Transmittance of Transparent Plastics
• Effective Date: 01-Nov-2007
• Refers: ASTM E177-06b - Standard Practice for Use of the Terms Precision and Bias in ASTM Test Methods
• Effective Date: 15-Nov-2006
• Refers: ASTM E177-06a - Standard Practice for Use of the Terms Precision and Bias in ASTM Test Methods
• Effective Date: 01-Nov-2006

Overview

ASTM F735-22: Standard Test Method for Abrasion Resistance of Transparent Plastics and Coatings Using the Oscillating Sand Method is an international standard developed by ASTM. It provides a method to assess the abrasion resistance of transparent plastics and coatings, particularly those used in windows, viewing ports, and protective enclosures. Abrasion from wiping, cleaning, or physical contact can degrade clarity and function, making abrasion testing critical for quality control and product development in various industries.

The ASTM F735-22 standard outlines laboratory procedures for subjecting transparent plastic materials and coatings to surface abrasion using oscillating sand. The resulting changes in light transmission and haze are measured to quantify material performance.

Key Topics

• Abrasion Resistance Testing: The standard describes how to evaluate the durability of transparent plastics and coatings against mechanical abrasion caused by sand particles.
• Oscillating Sand Method: This method involves using a sand cradle and reciprocating motion to expose test specimens to controlled abrasive action.
• Measurement of Optical Properties: Quantifies changes in luminous transmission and haze using an integrating sphere photometer before and after abrasion.
• Specimen Preparation: Details procedures for cleaning, mounting, and conditioning specimens to ensure consistent, repeatable results.
• Test Conditions: Ensures tests are conducted in a standard laboratory atmosphere to maintain accuracy.
• Reporting Results: Requires documenting the type of material, initial and post-abrasion light transmission and haze, and specific test parameters used.
• Precision and Repeatability: Discusses requirements and expectations for repeatability and reproducibility between laboratories.

Applications

ASTM F735-22 is widely used in industries where transparent plastics or coatings must maintain optical clarity after exposure to everyday wear and cleaning. Typical applications include:

• Aerospace and Aviation: Evaluating materials used in aircraft canopies, windows, and instrument panels for resistance to abrasion from airborne particles or maintenance activities.
• Automotive: Assessing abrasion resistance of automotive windows, headlight covers, and displays.
• Consumer Electronics: Quality control of screen protectors, display covers, and optical components.
• Architectural Glazing: Testing building windows, skylights, and other transparent architectural elements to ensure long-term optical performance.
• Medical Devices: Examining plastic windows or covers on medical equipment for resistance to repeated cleaning and disinfecting.
• Protective Equipment: Assessing visors, shields, and other personal protective gear made from transparent plastics.

By following ASTM F735-22, manufacturers and product developers can compare materials, select suitable products, enhance durability, and meet regulatory or customer requirements.

Related Standards

Several other ASTM standards support or complement the F735-22 standard, including:

• ASTM C136: Test Method for Sieve Analysis of Fine and Coarse Aggregates.
• ASTM D618: Practice for Conditioning Plastics for Testing.
• ASTM D1003: Test Method for Haze and Luminous Transmittance of Transparent Plastics.
• ASTM E11: Specification for Woven Wire Test Sieve Cloth and Test Sieves.
• ASTM E177: Practice for Use of the Terms Precision and Bias in ASTM Test Methods.
• ASTM E691: Practice for Conducting an Interlaboratory Study to Determine the Precision of a Test Method.

Adhering to ASTM F735-22 and its related standards ensures consistent evaluation of abrasion resistance and facilitates compliance across global markets. This helps guarantee that transparent plastics and coatings perform reliably throughout their intended service life.

Standards Content (Sample)

This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the
Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
Designation: F735 − 22
Standard Test Method for
Abrasion Resistance of Transparent Plastics and Coatings
Using the Oscillating Sand Method
ThisstandardisissuedunderthefixeddesignationF735;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginal
adoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscript
epsilon (´) indicates an editorial change since the last revision or reapproval.
1. Scope* 3. Summary of Test Method
1.1 This test method determines the resistance of transpar- 3.1 Thetestmethodconsistsofmeasuringandrecordingthe
ent plastics and transparent coatings utilized in windows or haze and light transmission of a test specimen, mounting the
viewing ports to surface abrasion using oscillating sand. specimen so that it forms part of the bottom tray (sand cradle),
coveringthespecimenwithabradingmedia,andsubjectingthe
1.2 Units—The values stated in SI units are to be regarded
cradle to a specific number of oscillations. At specified
asstandard.Nootherunitsofmeasurementareincludedinthis
intervals, the test specimen is cleaned then the haze and light
standard.
transmission are remeasured to determine any change in these
1.3 This standard does not purport to address all of the
values. The degree of surface abrasion is determined by the
safety concerns, if any, associated with its use. It is the
amount of change in light transmission and haze.
responsibility of the user of this standard to establish appro-
3.2 At the stroke velocity specified in this test method, the
priate safety, health, and environmental practices and deter-
entire mass of sand shifts significantly within the sand cradle
mine the applicability of regulatory limitations prior to use.
because of its inertia; therefore, the relative motion between
1.4 This international standard was developed in accor-
sand and specimen at the interface is large.
dance with internationally recognized principles on standard-
ization established in the Decision on Principles for the
3.3 The thickness or height of the sand resting on top of the
Development of International Standards, Guides and Recom-
test specimen remains relatively constant during the motion of
mendations issued by the World Trade Organization Technical
the cradle. Therefore, the average pressure of the sand also
Barriers to Trade (TBT) Committee.
remains constant, giving highly reproducible results over the
entire surface of the test specimen.
2. Referenced Documents
4. Significance and Use
2.1 ASTM Standards:
4.1 Plastic materials, when used as transparencies, covers,
C136Test Method for Sieve Analysis of Fine and Coarse
or enclosures, are subject to wiping, cleaning, or other types of
Aggregates
rubbing actions that cause abrasion. It is the intent of this test
D618Practice for Conditioning Plastics for Testing
methodtoprovideameansofestimatingtheresistanceofsuch
D1003Test Method for Haze and Luminous Transmittance
materials to this type and degree of abrasion.
of Transparent Plastics
E11Specification forWovenWireTest Sieve Cloth andTest
5. Apparatus
Sieves
5.1 Abrader—The abrader consists of a specimen holder,
E177Practice for Use of the Terms Precision and Bias in
sand cradle, drive mechanism, and counter. One such example
ASTM Test Methods
is shown in Fig. 1.
E691Practice for Conducting an Interlaboratory Study to
5.1.1 The specimen holder shall have a cutout approxi-
Determine the Precision of a Test Method
mately 100mm by 100mm to receive the specimen. Alterna-
tive specimen holders can be used to test other specimen sizes
This test method is under the jurisdiction of ASTM Committee F07 on
as long as they can be used within the testing limitations
Aerospace andAircraft and is the direct responsibility of Subcommittee F07.08 on
defined in this test method.
Transparent Enclosures and Materials.
5.1.2 The specimen holder forms the bottom of the sand
Current edition approved May 1, 2022. Published May 2022. Originally
cradle.
approved in 1981. Last previous edition approved in 2017 as F735–17. DOI:
10.1520/F0735-22.
5.1.3 The sand cradle shall be approximately 250mm ×
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
250mm × 50 mm, with the sides set at an angle of 60°.
contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM
5.1.4 A drive mechanism shall provide 300 strokes per
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website. minute of reciprocating motion of approximately 100mm
*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
F735 − 22
FIG. 1 Oscillating Sand Abrader
travel. Motion in one direction is defined as one stroke. One 7. Test Specimens
forward stroke and one reverse stroke are defined as one
7.1 The specimens shall be clean, transparent plates,
oscillation or cycle.
100mm square, having both sides substantially plane and
5.1.5 A counter shall record the number of strokes (or
parallel, unless otherwise specified and defined in 5.1.1. Three
cycles) during a test.
specimens shall be tested. Any specimen thickness can be
5.2 Photometer—An integrating sphere photoelectric pho- utilized provided the specimen is flush with the specimen
tometer(hazemeter),describedinTestMethodD1003,shallbe holder when mounted (see 9.2).
used to measure light transmission and haze.
NOTE 2—A protective backing material may be applied to the un-
abraded side of the specimen to prevent scratching during testing and
6. Reagents and Materials
handling. Prior to measuring light transmission and haze, remove the
backing material and clean the specimen thoroughly according to 9.1.
6.1 Abrading Medium—Quartz Sand —The sand shall be
quartz silica, graded 6/9, and shall meet the following require-
8. Conditioning
ments:
8.1 Where conditioning of the test specimen is required,
6.1.1 Properties (typical)—See Table 1 for sieve analysis
percent retained. utilize Procedure A of Practice D618.
8.2 Tests shall be conducted in the Standard Laboratory
NOTE1—Theuseofquartzsilicasand6/12or4/10specifiedinprevious
versionsofthistestmethodcanstillbeusedifavailable.SeeAppendixX1
Atmosphere of 23 6 2°C and 50 6 5% relative humidity,
for additional details
unless otherwise specified.
9. Procedure
9.1 Prior to testing, clean the specimen using the following
The sole source of supply of the sand known to the committee at this time is
procedure.Handlespecimenbyedgesonly.Washbothsidesof
Premier Silica LLC, Brady, TX 76825. If you are aware of alternative suppliers,
the specimen with 50:50 isopropyl alcohol (IPA) / distilled
please provide this information to ASTM International Headquarters. Your com-
water and a clean 100% lint free cotton cloth. Soak the cloth
ments will receive careful consideration at a meeting of the responsible technical
committee, which you may attend.
first, and then use a linear motion to wipe the test specimen;
first wipe the specimen vertically, then wipe the specimen
TABLE 1 Properties
horizontally, and as a final step, wipe the edges. Dry by
blowinglightlywithfilteredairornitrogen.Alternativeaccept-
E11 Sieve Designation
Individual % Weight
Retained
U.S. No. mm able cleaning methods can be used if agreed between the
interested parties.
5 4.00 0–7
6 3.36 2–11
9.2 Measure the specimen’s initial average light transmis-
7 2.83 15–25
8 2.38 30–50 sion and haze. Using a photoelectric, integrating sphere pho-
10 2.00 20 – 40
tometer and Test Method D1003, measure the percentage of
12 1.68 1 – 7
transmittedlightandpercentofhazeinthreedifferentlocations
Pan . <1–5
on the specimen. The abraded side of the specimen shall be
Physical Analysis: Roundness 0.6+; Sphericity 0.6+; Hardness 7.0; S.G. 2.65,
placedagainsttheentranceportoftheintegratingsphereofthe
Loss on Ignition 0.1; MP 2800°/3100°; Color Tan/White; pH Neutral 7.0.
photometer (facing away from the light source). Report as the
Chemical Content (%); SiO 99.48; Fe O 0.06; Al O 0.21; MgO < 0.01; CaO
2 2 3 2 3
< 0.01; and TiO < 0.01. average.
F735 − 22
9.3 Mount the specimen in the specimen holder using a analysis of the data; the details are given in ASTM Research
protective means (such as masking tape) to secure in place and Report No. F07-1010.
prevent sand from damaging the specimen’s bottom surface. 11.1.1 Repeatability Limit (R)—The difference between re-
The specimen shall be mounted flush to within 61mmofthe petitive results obtained by the same operator in a given
specimen holder. laboratory applying the same test method with the same
apparatus under constant operating conditions on identical test
9.4 Fill the sand cradle and cover specimen with sand to a
materialwithinshortintervalsoftimewouldinthelongrun,in
uniform depth of 13mm.
thenormalandcorrectoperationofthetestmethod,exceedthe
NOTE 3—For a sand cradle 250mm x 250mm, 800mL of sand has
following values only in one case in 20.
been found to be sufficient to obtain a uniform depth of 13mm.
11.1.1.1 Repeatability limit can be interpreted as the maxi-
9.4.1 Agiven batch of sand may be used for a maximum of
mum difference between two results, obtained under repeat-
600 strokes (300 cycles). New sand shall be used for each
ability conditions, that is accepted as plausible due to random
specimen tested.
causes under normal and correct operation of the test method.
11.1.1.2 Repeatability limits are listed in Tables 2-9.
9.5 Subject the specimen to abrasion.
11.1.2 Reproducibility Limit (R)—The difference between
9.5.1 After 100, 200, 300, and 600 strokes (50, 100, 150,
two single and independent results obtained by different
and 300 cycles), remove the specimen from the holder and
operators applying the same test method in different laborato-
clean using the procedure described in 9.1.
ries using different apparatus on identical test material would,
9.5.2 Measurethelighttransmissionandhazeinaccordance
in the long run, in the normal and correct operation of the test
with 9.2.
method, exceed the following values only in one case in 20.
9.6 Repeat 9.3 to 9.5.2 until a total of 600 strokes (300
11.1.2.1 Reproducibility limit can be interpreted
...

This document is not an ASTM standard and is intended only to provide the user of an ASTM 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: F735 − 17 F735 − 22
Standard Test Method for
Abrasion Resistance of Transparent Plastics and Coatings
Using the Oscillating Sand Method
This standard is issued under the fixed designation F735; 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*
1.1 This test method determines the resistance of transparent plastics and transparent coatings utilized in windows or viewing
ports,ports to surface abrasion using oscillating sand.
1.2 Units—The values stated in SI units are to be regarded as standard. No other units of measurement are included in this
standard.
1.2.1 Exception—The inch-pound units in parentheses are provided 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 safety, health, and healthenvironmental practices and determine the
applicability of regulatory limitations prior to use.
1.4 This international standard was developed in accordance with internationally recognized principles on standardization
established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued
by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
2. Referenced Documents
2.1 ASTM Standards:
C136 Test Method for Sieve Analysis of Fine and Coarse Aggregates
D618 Practice for Conditioning Plastics for Testing
D1003 Test Method for Haze and Luminous Transmittance of Transparent Plastics
E11 Specification for Woven Wire Test Sieve Cloth and Test Sieves
E177 Practice for Use of the Terms Precision and Bias in ASTM Test Methods
E691 Practice for Conducting an Interlaboratory Study to Determine the Precision of a Test Method
3. Summary of Test Method
3.1 The test method consists of measuring and recording the haze and light transmission of a test specimen, mounting the
specimen so that it forms part of the bottom tray (sand cradle), covering the specimen with abrading media, and subjecting the
cradle to a specific number of oscillations. After exposure to the abrasion, At specified intervals, the test specimen is cleaned then
This test method is under the jurisdiction of ASTM Committee F07 on Aerospace and Aircraft and is the direct responsibility of Subcommittee F07.08 on Transparent
Enclosures and Materials.
Current edition approved June 1, 2017May 1, 2022. Published July 2017May 2022. Originally approved in 1981. Last previous edition approved in 20112017 as
F735 – 11.F735 – 17. DOI: 10.1520/F0735-17.10.1520/F0735-22.
For referenced ASTM standards, visit the ASTM website, www.astm.org, or contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM Standards
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
F735 − 22
the haze and light transmission are remeasured to determine any change in these values. The degree of surface abrasion is
determined by the amount of change in light transmission and haze.
3.2 At the stroke velocity specified in this test method, the entire mass of sand shifts significantly within the sand cradle because
of its inertia; therefore, the relative motion between sand and specimen at the interface is large.
3.3 The thickness or height of the sand resting on top of the test specimen remains relatively constant during the motion of the
cradle. Therefore, the average pressure of the sand also remains constant, giving highly reproducible results over the entire surface
of the test specimen.
3.4 The degree of abrasion is measured by the amount of change in luminous transmission and haze after exposure to the test.
4. Significance and Use
4.1 Plastic materials, when used as transparencies, covers, or enclosures, are subject to wiping, cleaning, or other types of rubbing
actions that cause abrasion. It is the intent of this test method to provide a means of estimating the resistance of such materials
to this type and degree of abrasion.
5. Apparatus
5.1 Abrader—The abrader consists of a specimen holder, sand cradle, drive mechanism, and counter. One such example is shown
in Fig. 1.
5.1.1 The specimen holder shall have a cutout approximately 100 by 100 mm (4 by 4 in.) 100 mm by 100 mm to receive the
specimen. Alternative specimen holders can be used to test other specimen sizes as long as they can be used within the testing
limitations defined in this test method.
5.1.2 The specimen holder forms the bottom of the sand cradle.
5.1.3 The sand cradle shall be approximately 250250 mm × 250 × 50 mm (10 × 10 × 2 in.), 250 mm × 50 mm, with the sides set
at an angle of 60°.
5.1.4 A drive mechanism shall provide 300 strokes per minute of reciprocating motion of approximately 100-mm (4-in.) 100 mm
travel. Motion in one direction is defined as one stroke. One forward stroke and one reverse stroke are defined as one oscillation
or cycle.
5.1.5 A counter shall record the number of strokes (or cycles) during a test.
5.2 Photometer—An integrating sphere photoelectric photometer, photometer (hazemeter), described in Test Method D1003, shall
be used to measure light transmission (LT) and haze.
FIG. 1 Oscillating Sand Abrader
F735 − 22
6. Reagents and Materials
6.1 Abrading Medium—Quartz Sand —The sand shall be quartz silica, graded 6/9, and shall meet the following requirements:
6.1.1 Properties (typical)—See Table 1 for sieve analysis percent retained.
NOTE 1—The use of quartz silica sand 6/12 or 4/10 specified in previous versions of this test method can still be used if available. See AppendixAppendix
X1 X1 for additional details
7. Test Specimens
7.1 The specimens shall be clean, transparent plates, 100-mm (4-in.) 100 mm square, having both sides substantially plane and
parallel, unless otherwise specified and defined in 5.1.1. Three specimens shall be tested. Any specimen thickness can be utilized
provided the specimen is flush with the specimen holder when mounted (see 9.2).
NOTE 2—A protective backing material may be applied to the unabraded side of the specimen to prevent scratching during testing and handling. Prior
to measuring light transmission and haze, remove the backing material and clean the specimen thoroughly according to 9.4.19.1.
8. Conditioning
8.1 Where conditioning of the test specimen is required, utilize Procedure A of Practice D618.
8.2 Tests shall be conducted in the Standard Laboratory Atmosphere of 23 6 2°C2 °C and 50 6 5 % relative humidity, unless
otherwise specified.
9. Procedure
9.1 Prior to testing, clean the specimen using the following procedure. Handle specimen by edges only. Wash both sides of the
specimen with 50:50 isopropyl alcohol (IPA) / distilled water and a clean 100 % lint free cotton cloth. Soak the cloth first, and then
use a linear motion to wipe the test specimen; first wipe the specimen vertically, then wipe the specimen horizontally, and as a final
step, wipe the edges. Dry by blowing lightly with filtered air or nitrogen. Alternative acceptable cleaning methods can be used if
agreed between the interested parties.
9.2 Prior to testing, clean the specimen using the procedure described inMeasure the specimen’s initial average light transmission
and haze. Using a 9.4.1. Measure the specimen’s initial average transmissionphotoelectric, integrating sphere photometer and Test
Method D1003and haze in accordance with, measure the percentage of transmitted light and percent of haze in three different
9.5.locations on the specimen. The abraded side of the specimen shall be placed against the entrance port of the integrating sphere
of the photometer (facing away from the light source). Report as the average.
TABLE 1 Properties
E11 Sieve Designation
Individual % Weight
Retained
U.S. No. mm
5 4.00 0 – 7
6 3.36 2 – 11
7 2.83 15 – 25
8 2.38 30 – 50
10 2.00 20 – 40
12 1.68 1 – 7
Pan . < 1 – 5
Physical Analysis: Roundness 0.6+; Sphericity 0.6+; Hardness 7.0; S.G. 2.65,
Loss on Ignition 0.1; MP 2800°/3100°; Color Tan/White; pH Neutral 7.0.
Chemical Content (%); SiO 99.48; Fe O 0.06; Al O 0.21; MgO < 0.01; CaO
2 2 3 2 3
< 0.01; and TiO < 0.01.
The sole source of supply of the sand known to the committee at this time is Premier Silica LLC, Brady, TX 76825. If you are aware of alternative suppliers, please
provide this information to ASTM International Headquarters. Your comments will receive careful consideration at a meeting of the responsible technical committee, which
you may attend.
F735 − 22
9.3 Mount the specimen in the specimen holder using a protective means (such as masking tape) to secure in place and prevent
sand from damaging the specimen’s bottom surface. The specimen shall be mounted flush to within 61 mm (0.04 in.) 61 mm of
the specimen holder.
9.4 Fill the sand cradle and cover specimen with sand to a uniform depth of 13 mm (0.50 in.).13 mm.
NOTE 3—For a sand cradle 10 in. × 10 in., 800 mL 250 mm x 250 mm, 800 mL of sand has been found to be sufficient to obtain a uniform depth of 13
mm (0.50 in.).13 mm.
9.4.1 A given batch of sand may be used for a maximum of 600 strokes (300 cycles). New sand shall be used for each specimen
tested.
9.5 Subject the specimen to 100, 200, 300, and 600 strokes (50, 100, 150, and 300 cycles).abrasion.
9.5.1 After each increment (as listed in section100, 200, 300, and 600 strokes 9.4) of strokes, (50, 100, 150, and 300 cycles),
remove the specimen from the holder. Handle specimen by edges only. Wash both sides of the specimen with 50:50 IPA / distilled
water and a clean rymple cloth. Soak the cloth first, andholder and clean using the procedure described in 9.1then use a linear
motion to wipe the test specimen; first wipe the specimen vertically, then wipe the specimen horizontally, and as a final step wipe
the edges. Dry by blowing lightly with filtered air or nitrogen. Alternative acceptable cleaning methods can be used if agreed
between the interested parties. .
9.5.2 2 Measure the light transmission and haze in accordance with section 9.59.2.
9.6 Using aRepeat 9.3 photoelectric, integratingto 9.5.2 sphere photometer and Test Method until a total D1003, measure the
percentage of transmitted light and percent of haze in three different locations on the specimen. The abraded side of the specimen
shall be placed against the entrance port of the integrating sphere of the hazemeter (facing away from the light source). Report as
the average.of 600 strokes (300 cycles) have been completed.
9.7 Subtract the initial light transmittance (haze) percentagetransmission and haze of the unabraded specimen determined by
9.19.2 from the light transmittance (haze) percentagetransmission and haze of the unabradedabraded specimen as measured by
9.4.29.5.2. The difference represents the light scatter resulting from abrading the specimen.
10. Report
10.1 The report shall include the following:
10.1.1 Type of material being tested,
10.1.2 The percentage of the transmitted light and percent haze for each specimen tested, both before and after exposure to
abrasion of 100, 200, 300, and 600 strokes,strokes (50, 100, 150, and 300 cycles), along with the change in transmitted light and
haze,
10.1.3 Test results shall be reported as the average of the three specimens tested, and
10.1.4 Abrading medium, if different than specified in 6.1.
11. Precision and Bias
11.1 Precision—The precision of this test method is based on an interlaborato
...