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DIN EN ISO 20844:2015 Edition

DIN EN ISO 20844:2015 Edition

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Petroleum and related products – Determination of the shear stability of polymer-containing oils using a diesel injector nozzle

Published By Publication Date Number of Pages
DIN 2015-12 18
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This document specifies a method to assess the resistance to shear stresses applied to mineral oils, synthetic oils and other fluids containing polymers, when passed through a specified diesel injector nozzle. The shear stability is measured by the change in viscosity of the fluid under test, brought about by the polymer degradation during stress. Under normal circumstances, this document is applied to hydraulic fluids of categories HR and HV as defined in ISO 6743-4 and specified in ISO 11158, but it may also be applied to fire-resistant hydraulic fluids within categories HFA, HFB, HFC and HFD, with modified conditions as specified in ISO 12922.

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DIN EN ISO 20844
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