The graphic curve will be updated as well. All other values will be re-calculated automatically. Just put your values (either imperial or metrical) in the appropriate fields below and press ENTER. The use of any of the calculators’ results is at the user’s sole risk. The calculator below is for informative purposes only. You can calculate pre-filled values of oil classified by ISO 3448 with grades VG22, VG32, VG46 or VG68 (at viscosity Index = 100) or enter specific values for any other oils. These data is enough to determine kinematic viscosity at any other values of temperature and as well Viscosity Index. The present invention provides for a lubricating composition including: a hydrocracker-derived, highly naphthenic, low viscosity index mineral oil from about 2 wt. Mineral oil viscosity at high temperatures and pressures may be. Расчёт индекса вязкости по кинематической вязкости`)Īny mineral oil is supplied with the specification of kinematic viscosity values at two different temperatures, usually at 40☌ and at 100☌ (or at 100☏ and at 210☏). The change in viscosity with temperature is described by the viscosity index (Gresham 2007). the Viscosity Index (VI) by the formulas specified in ASTM D2270 (`Standard Practice for Calculating Viscosity Index from Kinematic Viscosity at 40 and 100☌ 1`) or in ISO 2909 (`Standard Practice for Calculating Viscosity Index from Kinematic Viscosity at 40 and 100☌ 1`) or in ГОСТ 25371-2018 (`Нефтепродукты.the kinematic viscosity values, depends from temperature, calculated by the formulas specified in ASTM D341 – (‘Standard Practice for Viscosity-Temperature Charts for Liquid Petroleum Products’).‘cSt’ stands for CentiStokes, an accurate dynamic measure of viscosity ( ISO 3104:1994 & ASTM D445-04 ). It is known that the temperature range of service for gear oils and hydraulic oils can be extended by adding polymeric thickeners viscosity index improvers (VII s) and wax crystal modifiers (pour point depressants or 'PPDs') to relatively nonviscous base fluids of both mineral oil and synthetic types. The interpolation calculator provided below is used to determine: Viscosity (ISO) Modern fluid viscosity ratings are on an ISO VG (visocosity grade) using test standards set down by ASTM D-2422-97 (2002) & ISO 3448:1992 system of: cSt40C / cSt100C / VI.
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