IS 1448 Pt.56-1980

标准号：IS 1448 Pt.56-1980
发布日期：1980/12/1 12:00:00
实施日期：1999/12/31 12:00:00
适用范围：1.1 This Indian Standard specifies two procedures for calculating the viscosity index of petroleum products and related materials from their kinematic viscosities at 40°C and 100°C*:Procedure A — Applicable to petroleum products of viscosity index up to but not including 100; andProcedure B — Applicable to petroleum products of viscosity index of 100 or greater.1.2 Table 1 applies to petroleum products with kinematic viscosities between 2 and 70 mm /s〓 at 100°C. Equations are provided for calculating viscosity index for petroleum products having kinematic viscosities above 70 mnr/s at 100°C1.3 The kinematic viscosity values are determined with reference to a value of 1.0038 mm2/s at 20.00°C for distilled water. The determination of the kinematic viscosity of a petroleum product shall be carried out in accordance with IS : 1448 [ P : 25 ] - 1976*.