ASTM International - ASTM D6022-19

Standard Practice for Calculation of Permanent Shear Stability Index

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Organization: ASTM International
Publication Date: 1 December 2019
Status: active
Page Count: 4
ICS Code (Measurement of volume, mass, density, viscosity): 17.060
significance And Use:

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... View More

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.

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.

Document History

ASTM D6022-19
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 %...
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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