ASTM D658-91

Standard Test Method for Abrasion Resistance of Organic Coatings by Air Blast Abrasive (Withdrawn 1996)

SCOPE
1.1 This test method covers the determination of the resistance of organic coatings to abrasion produced by an air blast of abrasive on coatings applied to a plane, rigid surface, such as a metal or glass panel.  
1.2 This standard does not purport to address the safety problems 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• Status: Withdrawn
• Publication Date: 31-Dec-1990
• Withdrawal Date: 09-Nov-1996
• ICS: 25.220.60 - Organic coatings
• Technical Committee: D01 - Paint and Related Coatings, Materials, and Applications
• Drafting Committee: D01.23 - Physical Properties of Applied Paint Films

Standards Content (Sample)

ÄSTN-Db58 93 W 0759530 0070698 T
AMERICAN SOCIETY FOR TESTING AND MATERIALS
1916 RaceSt. Philadelphia, Pa 19103
Reprinted from the Annual Book of ASTM Standards. Copyright ASTM
Designation: D 658 - 91
If not listed in the current combined index, will appear in the next edition.
Standard Test Method for
Abrasion Resistance of Organic Coatings by Air Blast
Abrasive'
This standard is issued under the fixed designation D 658; the number immediately following the designation indicafes 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) indicafes an editorial change since the last revision or reapproval.
1. Scope
1.1 This test method covers the determination of the
resistance of organic coatings to abrasion produced by an air
blast of abrasive on coatings applied to a plane, rigid surface,
such as a metal or glass panel.
1.2 This standard does not purport to address the safety
problems 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.
FROM
41R CONTROL
2. Referenced Documents APPARATUS
2.1 ASTM Standards:
FLOWMETER
D823 Test Methods for Producing Films of Uniform
\
Thickness of Paint, Varnish, and Related Products on
a
Test Panels2
D968 Test Method for Abrasion Resistance of Organic
Coatings by Falling Abrasive2
D1005 Test Methods for Measurement of Dry Film
Thickness of Organic Coatings Using Micrometers2
D 1 186 Test Methods for Nondestructive Measurement of
Dry Film Thickness of Nonmagnetic Coatings Applied
to a Ferrous Base2
D 1400 Test Method for Nondestructive Measurement of
Dry Film Thickness of Nonconductive Coatings Ap-
plied to a Nonferrous Metal Base2
E 11 Specification for Wire-Cloth Sieves For Testing
FIG. 1 Abrasion Test Apparatus (Closed)
Purposes3
5. Significance and Use
3. Terminology
5.1 This test method and Test Method D 968 are two
3.1 Description of Term Specific to This Standard:
similar methods to measure the abrasion resistance of
3.1.1 abrasion resistance-the weight of abrasive required
organic coatings.
to wear through a unit fdm thickness of the coating.
5.2 These test methods provide approximately the same
rankings of coatings for abrasion resistance.
5.3 Each of the test methods has been found useful in
4. Summary of Test Method
rating the abrasion resistance of specific types of coatings.
4.1 An abrasive under the action of a controlled air
on a coated panel until the
stream is allowed to impinge
substrate becomes visible. The amount of abrasive used per
6. Apparatus
unit film thickness is reported as the abrasion resistance of
6.1 Abrasion Tester: such as is illustrated in Figs. 1 and 2
the coating.
equipped with a giass nozzle as illustrated in Fig. 3, The
specimen stage should be set at 45" from horizontal.
This test method is under the juridiction of ASTM Committee D-1 on Paint
NOTE 1-To prevent clogging of the tube outlet of the abrasive
and Related Coatings and Materials and is the direct responsibility of Subcom-
holder by extraneous material, a screen can be inserted at the throat of
mittee W1.23 on Physical Properties of Applied Paint Films.
Current edition approved Feb. 22, 1991. Published Apd 1991. Originaiiy
published as D 658 - 42 T. Last previous edition D 658 - 81(1986)".
Anniial Book o$ASTMStandards, Vol 06.01, 4Drawings for a suitable tester of this type are available from ASTM
Annical Book of ASTM Standards, Vol 14.02. Headquarters. Order Adjunct No. 12-406580-00.
1

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ASTM Db58 93 0759530 0070b99 3
4m D658
8. Standardization
8.1 Assemble the abrasion tester and connect the inner
tube of the nozzle by a flexible tube to a suitable oil-free air
GY supply under pressure.
8.2 Set the air supply pressure at a value that will provide
approximately the desired flow rate of abrasive.
8.2.1 Unless otherwise agreed upon between the pur-
i*
chaser and seiler, the abrasive flow rate should be 45 f 2
t
g/min. An air supply pressure of approximately 13 kPa (100
t z
mmHg) should provide this rate.
-LW *
FROM
WNOMETER
NOTE 6-For some types of coatings, it may be desirable to use a
higher flow rate of abrasive. A rate of 15 f 2 g/min has been found to be
useful in some instances.
REAR LAMP2
ABRASION &&-FRONT LAMP
8.3 Place a metal panel on the specimen stage of the
NOZZLE -
abrader. Using the operating steps outlined in the procedure
SPECIMEN
srm
section, determine the flow rate of the abrasive by allowing
the abrasive to flow for 3 min and weighing the amount
collected.
8.4 If needed, make further adjustments to the air pres-
sure and make repeated checks of the flow rate until the
specified rate is obtained,
9. Conditioning
9.1 Unless otherwise
...