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Standard

NS-EN ISO 20844:2004

Tilbaketrukket

Merknad: Denne standarden har en ny utgave: NS-EN ISO 20844:2015

Forhåndsvisning

Rettelser og tillegg kjøpes separat.

Språk
Tjenester

Omfang

This International Standard specifies a method to assess the resistance to shear stresses applied to mineral oils, synthetic oils and 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 International Standard is applied to class HV hydraulic fluids as defined defined in ISO 6743-4, but it may also be applied to fire-resistant hydraulic fluids within classes HFA, HFB, HFC and HFD, with modified conditions as specified in ISO 12922. This International Standard does not necessarily predict changes in properties of oils and fluids in actual service, but provides standardized conditions for the evaluation of polymer stability under minimized thermal and oxidative stresses. It is normally used by manufacturers of fluids and additives, and users, as a means of ranking existing and potential formulations. NOTE 1 - Changes in other properties than viscosity are specified in some specifications, but these are not covered by the procedures specified in this International Standard.

Dokumentinformasjon

  • Standard fra SN
  • Publisert:
  • Tilbaketrukket:
  • Utgave: 1
  • Versjon: 1
  • Varetype: NAT
  • ICS 75.080
  • National Committee SN/K 576

Referanser i lov

EU lov: 92/104/EC

Produktrelasjon

Produkt livssyklus