A computer wasprogrammed to perform the necessary calculations; type selection; andarrangement in the desired format. The intervalsfor these viscosity values were selected on the basis of the importance ofthe size of the interval in a given viscosity range; ease of interpolation; andthe size of the resulting publication. at 100°C. Kinematic viscosity 2. mm 2 /s. × Error: Please fill in all fields! Kinematic viscosity 1. mm 2 /s.
VISCOSITY INDEX TABLESFOR CELSIUS TEMPERATURES ASTM DATA SERIES PUBLICATION DS 39B 05-039020-12A AMERICAN SOCIETY FOR TESTING AND MATERIALS 1916 Race Street, Philadelphia, Pa. 19103, © by AMERICAN SOCIETY FOR TESTING AND MATERIALS 1975 Library of Congress Catalog Card Number: 75-10096 ISBN 0-8031-0817-6 NOTE The Society is not responsible, as a body, for the statements and opinions advanced in this publication. Table 1 of the Method lists the basic viscosity values ofthe reference series used in the calculation. During the interim period in which the use of 100 and 210°F asreference temperatures is being phased out, either DS 39a or this newpublication can be used interchangeably. A high viscosity indexsignifies a relatively small change of kinematic viscosity with temperature.Calculation of Viscosity Index The viscosity index of an oil is calculated from its viscosities at 40 and100°C. Stir viscous material with our Versatile Magnetic Stirrer designed to use in any lab! Enter the table in the column headed 9.12 under \"Kinematic Viscosityat 100°C.\" Go down this column to the value 79.61. Wright, W. A., \"A Proposed Modification of the ASTM Viscosity Index,\" Pro-ceedings, American Petroleum Institute, Vol. 44, Section 3, (Refining), 1964,pp. 100 Centipoise = 1 Poise U = kinematic viscosity in centistokes at 40 °C to be listed in the body of the table. Definition The viscosity index is an arbitrary number indicating the effect of change of temperature on the kinematic viscosity of an oil. 32, 1940, pp. The viscosity index should be reported only to thenearest whole number.Method of Calculating Tabular Data and Publication It is considered desirable to record the procedures by which this editionof the ASTM Viscosity Index Tables were prepared. This was to bebased on kinematic viscosities determined at 40 and 100°C, and to be inagreement with the prior Method D 2270-64 using 100 and 210°F. 1 Centipoise = 1 mPa s (Millipascal Second) This deviation can arise from the rounding procedure usedby the computer when producing the tables. Returns Wright, W. A., Manning, R. E., and Talbot, A. F., \"Metrication of the ViscosityIndex System—ASTM D 2270,\" ASTM Committee D-2 Research Report No. This is theviscosity index of the oil.Example 2 What is the kinematic viscosity of an oil at 40 °C which is required foran oil of 13.60 cSt at 100°C and 125 viscosity index? W. A. Wright Past Chairman vRnesearch and Development Division ASTM Committee D-2, Acknowledgment of Work Personnel of Research and Development Division VII of ASTM Com-mittee D-2 responsible for the development of ASTM Standard MethodD 2270-74, Calculating Viscosity Index From Kinematic Viscosity at 40and 100°C on which these viscosity index tables are based. Reprints and Permissions, Convenient reference tables for obtaining calculated Viscosity Index vales obtained from basic kinematic values (in centistokes) given in ASTM Standard D 2270 and in Standards on Viscosity Tables for Kinematic Viscosity Conversions. Kinematic viscosity values at 40 and 1000 degrees are given. The accuracy of the calculatedviscosity index obtained by the use of Method D 2270 or the tables pre-sented here is dependent on the accuracy of the viscosity determinations.It is recommended that the viscosity index be reported only to wholenumbers and that the use of decimal values be avoided.Structure and Use of the Tables The tables are arranged according to the kinematic viscosity at 100°C.The viscosity at 100°C is given at the top of each column. This … Viscosity Tables – Measurement data. Procedure A—Oils of Viscosity Index Up to and Including 100 ? Enter the column headed 13.60 cSt at 100°C and proceed down thecolumn to the line at which 125 appears in the left hand column. Related Products Products and Services / Standards & Publications / Manuals, Monographs, & Data Series, Wright W., Talbot A., Manning R. About | Printed in Baltimore, Md. Dean, E. W., Bauer, A. D., and Bergland, J. H., \"Viscosity Index of LubricatingOils,\" Industrial and Engineering Chemistry, Vol. Automotive Lubricant Viscosity Grades: Engine Oils – SAE J 300, Dec. 1999.
Theupper limit of viscosity index decreases with increasing viscosity on the, basis of practicality. Use of these tables eliminates the calculations which would be required to determine the viscosity index. 618-619. ox/viscosity.html. Centipoise = Centistoke x Specific Gravity. 215, 1956, pp. The mathematical … The viscosity index values are givenin increments of one unit and are listed in the extreme left column.
Table 1 applies to petroleum products with kinematic viscosities between 2 mm2/s and 70 mm2/s at 100 °C. You are being redirected because this document is part of your ASTM Compass® subscription.
It is mostly used to characterize the viscosity-temperature behavior of lubricating oils. Foreword These tables were prepared to provide a convenient means of obtaining the viscosity index of petroleum products and lubricants without the neces-. C, \"A Comparison of Viscosity Index Proposals,\" ASTM Bulletin,No.
(At Room Temperature-70°F) *. L = kinematic viscosity in centistokes at 40°C of an oil of 0 viscosity index and having the same kinematic viscosity at 100°C as the oil whose viscosity index is to be calculated. This publication ful-fills that request.
N = log [0.00715 (VI - 100) + 1] The kinematic viscosities at 40°C in the table were tabulated to foursignificant figures. 81-84. The procedure for the calculation is given in ASTM MethodD 2270-74 for Calculating Viscosity Index from Kinematic Viscosity at40 and 100bC.
Geniesse, I. The viscosity index (VI) is an arbitrary, unit-less measure of a fluid's change in viscosity relative to temperature change. For RefWorks, EndNote, ProCite, Reference Manager, Zoteo, and many others. The viscosity index should be reported only to thenearest whole number.Method of Calculating Tabular Data and Publication It is considered desirable to record the procedures by which this editionof the ASTM Viscosity Index Tables were prepared.
Use of these tables eliminates the calculations whichwould be required to determine the viscosity index.Definition The viscosity index is an arbitrary number indicating the effect of changeof temperature on the kinematic viscosity of an oil. The left hand column on the same line gives the value 87. All calculations are based on the ASTM D2270 ‘Standard Practice for Calculating Viscosity Index from Kinematic Viscosity at 40 and 100°C’. The equa-tions used were as follows:For Oils of 0 to 100 VI U = L -[(VI/100) (L-H)]For Oils of 100 VI and greater U = antilog [log H - N log Y]where Y = kinematic viscosity of oil in centistokes at 100°C.
Cite this document. If the exact viscosities of an oil are not found in the table, the informa-tion desired can be obtained by linear interpolation between the propertabulated values. W. A. Wright, Sun Oil Company A. F. Talbot, Sun Oil Company R. E. Manning, Cannon Instrument Company, Introduction The' tables in this publication permit direct reading of the viscosity indexof a petroleum product or lubricant if its kinematic viscosities at 40 and100°C are known. These new tables are based on ASTM Method D 2270-74for Calculating Viscosity Index from Kinematic Viscosity at 40 and 100°C.Method D 2270-74 was prepared in compliance with worldwide agreementsreached within the International Standards Organization to adopt 40 and100° Celsius as the primary reference temperatures for the viscosity deter-minations of petroleum lubricants and related products. You can publish your book online for free in a few minutes! Viscosity Tables : Viscosity is the measurement of a fluid's internal resistance to flow. The value found is 107.7 cSt, which is the required kinematic viscosityat 40°C. May 1975 February 1986 Second Printing January 1990 Third Printing November 1996 Fourth Printing, Foreword These tables were prepared to provide a convenient means of obtainingthe viscosity index of petroleum products and lubricants without the neces-sity of calculation.
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