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ASTM D7395-07(2012)

Historical Reaffirmation

Standard Test Method for Cone/Plate Viscosity at a 500 s<sup>-1</sup> Shear Rate

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1.1 This test method covers the determination of the viscosity of paints and related products using a cone/plate viscometer at a shear rate of 500 s-1.

1.2 Viscosity values obtained by this method may be used as an alternative to results from No. 4 Ford cup measurements. The values from this method do not replicate Ford cup results, but can be used for quality control, producer-user specifications and viscosity reduction in the same manner that Ford cups are used.

1.3 If viscosity at a higher shear rate is needed, Test Method D4287, which describes viscosity measurement at 10 000 to 12 000 s-1 may be used.

1.4 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.

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.

This test has been used to measure viscosities of automotive topcoats in place of No. 4 Ford cup measurements and has provided an equivalent ability to evaluate whether the paint meets specifications and is sprayable.

The method could be considered as an alternative to No. 4 Ford cup and other efflux cup measurements for other products as well.

The type of viscometer described in this method gives better temperature control than Ford and other efflux cups and is expected to give better precision.

This test method is suitable for all paints and related materials whether they are Newtonian in behavior or not.

SDO ASTM: ASTM International
Document Number D7395
Publication Date Feb. 1, 2012
Language en - English
Page Count 3
Revision Level 07(2012)
Supercedes
Committee D01.24
Publish Date Document Id Type View
June 1, 2018 D7395-18 Revision
Nov. 1, 2007 D7395-07 Revision
Feb. 1, 2023 D7395-18R23 Reaffirmation
Feb. 1, 2012 D7395-07R12 Reaffirmation