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Description of ASTM-D6022 2012ASTM D6022 - 06(2012)Standard Practice for Calculation of Permanent Shear Stability IndexActive Standard ASTM D6022 | Developed by Subcommittee: D02.07 Book of Standards Volume: 05.02 ASTM D6022Significance 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 will lose 50?% of the viscosity it contributes to the
finished oil.
5.2 The selection of appropriate base fluids and additive concentrations to be used in test oils is left to individual operators or companies. These choices will depend on the intended application for the additive.
Note 3 PSSI may depend more strongly on base fluid, additive concentration, additive chemistry, and the presence
of other additives for base fluids of unusual composition (for example, esters) or if additives outside the common range of chemistries and concentrations are used. Caution should be
exercised when interpreting results from different sources.
1. 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.
ASTM Standards D2603 Test Method for Sonic Shear Stability of Polymer-Containing Oils D4485 Specification for Performance of Active API Service Category Engine Oils D5119 Test Method for Evaluation of Automotive Engine Oils in the CRC L-38 Spark-Ignition Engine D5275 Test Method for Fuel Injector Shear Stability Test (FISST) for Polymer Containing Fluids D5621 Test Method for Sonic Shear Stability of Hydraulic Fluids D6278 Test Method for Shear Stability of Polymer Containing Fluids Using a European Diesel Injector Apparatus D7109 Test Method for Shear Stability of Polymer Containing Fluids Using a European Diesel Injector Apparatus at 30 and 90 Cycles CEC Standards CECL45 T 93 Viscosity Shear Stability of Transmission Lubricants (KRL)Keywords permanent shear stability index; shear; shear stability index; viscosity loss ; ICS Code ICS Number Code 17.060 (Measurement of volume, mass, density, viscosity) DOI: 10.1520/D6022-06R12 ASTM International is a member of CrossRef. ASTM D6022This book also exists in the following packages...Subscription InformationMADCAD.com ASTM Standards subscriptions are annual and access is unlimited concurrency based (number of people that can access the subscription at any given time) from single office location. For pricing on multiple office location ASTM Standards Subscriptions, please contact us at info@madcad.com or +1 800.798.9296.
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About ASTMASTM International, formerly known as the American Society for Testing and Materials (ASTM), is a globally recognized leader in the development and delivery of international voluntary consensus standards. Today, some 12,000 ASTM standards are used around the world to improve product quality, enhance safety, facilitate market access and trade, and build consumer confidence. ASTM’s leadership in international standards development is driven by the contributions of its members: more than 30,000 of the world’s top technical experts and business professionals representing 150 countries. Working in an open and transparent process and using ASTM’s advanced electronic infrastructure, ASTM members deliver the test methods, specifications, guides, and practices that support industries and governments worldwide. |
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