Viscosity Index

Written by Jerry Ratzlaff on . Posted in Fluid Dynamics

Viscosity index ( \(VI\) ) is a measure of a fluid's sensitivity to change in viscosity with change in temperature.


Viscosity Index Standards

  • ASTM Standards
    • ASTM D2116 - Standard Method for Conversion of Kinematic Viscosity to Saybolt Universal Viscosity or to Saybolt Furol Viscosity
    • ASTM D2270 - Standard Practice for Calculating Viscosity Index from Kinematic Viscosity at 40 and 100°C
    • ASTM STP168 - ASTM Viscosity Index Calculated from Kinematic Viscosity
    • ASTM STP532 - Viscosity Testing of Asphalt and Experience with Viscosity Graded Specifications


Tags: Equations for Viscosity