Standard Practice for Calculation of Permanent Shear Stability Index

Available format(s)

Hardcopy , PDF

Language(s)

English

Published date

01-01-2020

Publisher

American Society for Testing and Materials

Committee	D 02
DocumentType	Standard Practice
Pages	4
PublisherName	American Society for Testing and Materials
Status	Current
Supersedes	ASTM D 6022 : 2006 : R2012

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

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

1.3This 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.

1.4This 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.

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