12/10/2023 0 Comments Calculating viscosity index![]() ![]() Permitted and described below, each ASTM Product to which Licensee has subscribed. Revocable, nonexclusive, non-transferable license to access, by means of one or moreĪuthorized IP addresses, and according to the terms of this Agreement, to make the uses Or employee of the Licensee, at the Single or Multiple Site. To this Product if a Site License, also includes registered students, faculty or staff member, Independently administered multiple locations within one city or an organization orĬompany located in more than one city, state or country, with central administration for all locations. Sites within one city that are part of a single organization unit administered centrally įor example, different campuses of the same university within the same city administered centrally. The copyright notice or other notice contained in the ASTM Product or Documents.Ī single unique computer, with an individual IP address (in both electronic file and hard copy) belong to ASTM. This is not a sale all right, title and interest in the ASTM Product or Documents (Licensee) have no ownership or other rights in the ASTM Product or in the Documents. ("ASTM"), 100 Barr Harbor Drive, West Conshohocken, PA 19428-2959 USA, except as may beĮxplicitly noted in the text of the individual Documents. Promptly exit this page without entering the ASTM Product.Ĭompilation and as individual standards, articles and/or documents ("Documents") by ASTM If you do not agree to the terms of this License Agreement, IMPORTANT- READ THESE TERMS CAREFULLY BEFORE ENTERING THIS ASTM PRODUCT.īy purchasing a subscription and clicking through this agreement, you are entering intoĪ contract, and acknowledge that you have read this License Agreement, that you understand 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.ġ.4 The values stated in SI units are to be regarded as the standard. See Test Method D 341, Annex A1.ġ.3 The kinematic viscosity values are determined with reference to a value of 1.0034 mm 2/s (cSt) at 20.00 oC for distilled water. ![]() ![]() Such viscosity index data may be considered as suitable for information only and not for specification purposes. Equations are provided for calculating viscosity index for petroleum products having kinematic viscosities above 70 mm 2/s (cSt) at 100 oC.ġ.2.1 In cases where kinematic viscosity data are not available at temperatures of 40 and 100 oC, an estimate may be made of the viscosity index by calculating the kinematic viscosity at temperatures of 40 and 100 oC from data obtained at other temperatures. ![]() Table 1 given in this practice applies to petroleum products with kinematic viscosities between 2 and 70 mm 2/s (cSt) at 100 oC. Note 1 - The results obtained from the calculation of VI from kinematic viscosities determined at 40 and 100 oC are virtually the same as those obtained from the former VI system using kinematic viscosities determined at 37.78 and 98.89 oC.ġ.1.1 Procedure A - For petroleum products of viscosity index up to and including 100.ġ.1.2 Procedure B - For petroleum products of which the viscosity index is 100 or greater.ġ.2 This standard does not apply to petroleum products with kinematic viscosities less than 2.0 mm 2/s (cSt) at 100 oC. 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 100 oC. ![]()
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