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Description of ASTM-D2270 2004ASTM D2270-04Historical Standard: Standard Practice for Calculating Viscosity Index From Kinematic Viscosity at 40 and 100°CASTM D2270Scope 1.1 This practice covers the procedures for calculating the viscosity index of petroleum products, such as lubricating oils, and related materials from their kinematic viscosities at 40 and 100oC. Note 1 -- The results obtained from the calculation of VI from kinematic viscosities determined at 40 and 100oC are virtually the same as those obtained from the former VI system using kinematic viscosities determined at 37.78 and 98.89oC. 1.1.1 Procedure A - For petroleum products of viscosity index up to and including 100. 1.1.2 Procedure B - For petroleum products of which the viscosity index is 100 or greater. 1.2 This standard does not apply to petroleum products with kinematic viscosities less than 2.0 mm2/s (cSt) at 100oC. Table 1 given in this practice applies to petroleum products with kinematic viscosities between 2 and 70 mm2/s (cSt) at 100oC. Equations are provided for calculating viscosity index for petroleum products having kinematic viscosities above 70 mm2/s (cSt) at 100oC. Note 2 - 1 cSt = 1 mm2/s = 106m2/s. 1.2.1 In cases where kinematic viscosity data are not available at temperatures of 40 and 100oC, an estimate may be made of the viscosity index by calculating the kinematic viscosity at temperatures of 40 and 100oC from data obtained at other temperatures. Such viscosity index data may be considered as suitable for information only and not for specification purposes. See Test Method D 341, Annex A1. 1.3 The kinematic viscosity values are determined with reference to a value of 1.0034 mm2/s (cSt) at 20.00oC for distilled water. The determination of the kinematic viscosity of a petroleum product shall be carried out in accordance with Test Methods D 445, IP 71, ISO 3104, or ISO 2909. 1.4 The values stated in SI units are to be regarded as the standard. Keywords kinematic viscosity; viscosity index ICS Code ICS Number Code 75.080 (Petroleum products in general) DOI: 10.1520/D2270-04 The following editions for this book are also available...This book also exists in the following packages...Subscription InformationMADCAD.com ASTM Standards subscriptions are annual and access is unlimited concurrency based (number of people that can access the subscription at any given time) from single office location. For pricing on multiple office location ASTM Standards Subscriptions, please contact us at info@madcad.com or +1 800.798.9296.
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About ASTMASTM International, formerly known as the American Society for Testing and Materials (ASTM), is a globally recognized leader in the development and delivery of international voluntary consensus standards. Today, some 12,000 ASTM standards are used around the world to improve product quality, enhance safety, facilitate market access and trade, and build consumer confidence. ASTM’s leadership in international standards development is driven by the contributions of its members: more than 30,000 of the world’s top technical experts and business professionals representing 150 countries. Working in an open and transparent process and using ASTM’s advanced electronic infrastructure, ASTM members deliver the test methods, specifications, guides, and practices that support industries and governments worldwide. |
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