1.1 This practice specifies the procedures for calculating the viscosity index of petroleum products, such as lubricating oils, and related materials from their kinematic viscosities at 40 and 100°C.<b> </b></p> <p>1.1.1 Procedure A -For petroleum products of viscosity index up to and including 100. </p> <p>1.1.2 Procedure B -For petroleum products of which the viscosity index is 100 or greater. </p> <p>1.2 Table 1 given in this practice applies to petroleum products with kinematic viscosities between 2 and 70 mm<b> </b>/s (cSt) at 100°C.<b> </b> Equations are provided for calculating viscosity index for petroleum products having kinematic viscosities above 70 mm<b> </b>/s (cSt) at 100°C.</p> <p>1.3 The kinematic viscosity values are determined with reference to a value of 1.0038 mm<b> </b>/s (cSt) at 20.00°C for distilled water. The determination of the kinematic viscosity of a petroleum product shall be carried out in accordance with Test Methods D445, IP 71, ISO 3104, or ISO 2909.</p> <p>1.4 The values stated in SI units are to be regarded as the standard.</p>
| SDO | ASTM: ASTM International |
| Document Number | D2270 |
| Publication Date | April 10, 1998 |
| Language | en - English |
| Page Count | 6 |
| Revision Level | 93(1998) |
| Supercedes | |
| Committee | D02.07 |