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ASTM International - ASTM D6022-01

Standard Practice for Calculation of Permanent Shear Stability Index

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Organization: ASTM International
Publication Date: 10 November 2001
Status: inactive
Page Count: 3
ICS Code (Measurement of volume, mass, density, viscosity): 17.060
scope:

1.1 This practice specifies the procedure for the calculation of Permanent Shear Stability Index (PSSI) of an additive using viscosities before and after a shearing procedure.

1.2 PSSI is calculated for a single blend component and can then be used to estimate the effects of that component on finished lubricant blends.

1.3 This practice is applicable to many products and may use data from many different test methods. The calculation is presented in its most general form in order not to restrict its use.

Document History

December 1, 2019
Standard Practice for Calculation of Permanent Shear Stability Index
5.1 Permanent Shear Stability Index (PSSI) is a measure of the loss of viscosity, due to shearing, contributed by a specified additive. Note 2: For example, a PSSI of 50 means the additive will lose...
November 1, 2012
Standard Practice for Calculation of Permanent Shear Stability Index
5.1 Permanent Shear Stability Index (PSSI) is a measure of the loss of viscosity, due to shearing, contributed by a specified additive. Note 2—For example, a PSSI of 50 means the additive will lose...
May 1, 2006
Standard Practice for Calculation of Permanent Shear Stability Index
Permanent Shear Stability Index (PSSI) is a measure of the loss of viscosity, due to shearing, contributed by a specified additive. Note 2—For example, a PSSI of 50 means the additive will lose 50 %...
ASTM D6022-01
November 10, 2001
Standard Practice for Calculation of Permanent Shear Stability Index
1.1 This practice specifies the procedure for the calculation of Permanent Shear Stability Index (PSSI) of an additive using viscosities before and after a shearing procedure. 1.2 PSSI is calculated...
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