1、 ERRATUM DS 39a,ASTM VISCOSITY INDEX CALCU-LATED FROM KINEMATIC VISCOSITY Page 687,95 V.I.First three columns to read 229.1 229.5 229.8 Errata ASTM Viscosity Index Tables Calculated from Kinematic Viscosity,Data Series 39A Make the following changes:Page V.I.4 167 14 50 25 0 318 250 411 125 658 126
2、661 0 704 150 832 50 916 50 950The value after V.I.of 158 should read 159 Kinematic Viscosity at 21b F,cs Kinematic Viscosity at 100 F,cs.Change from 2.00 5.856 to 5.861 2.23 8.827 to 8.927 2.45 115657 to 11.657 7.28 2.79 to 28.79 8.82 6306 to 63.06 17.16 1591 to 159.1 17.36 48.15 to 428.15 18.84 15
3、20 to 152.0 45.50 1602.2 to 1692.2 66.20 3383.3 to 3338.3 ASTM VISCOSITY INDEX Calculated from KINEMATIC VISCOSITY ASTM DATA SERIES DS 39a(Formerly STP 168)Price$23.00 to Members$16.00 Published by the AMERICAN SOCIETY FOR TESTING AND MATERIALS 1916 Race Street,Philadelphia BY AMERICAN SOCIETY FOR T
4、ESTING AND MATERIALS 1965 Library of Congress Catalog Card Number:65-24834 NOTE The Society is not responsible,as a body,for the statements and opinions advanced in this publication Printed in York,Pennsylvania September,1965 FOREWORD These tables were prepared to provide a convenient means of obtai
5、ning the Viscosity Index of petroleum products and lubricants without the necessity of calculation.They have been prepared under the guidance of Research Division VII on Flow Properties,of ASTM Committee D-2 on Petroleum Products and Lubricants.It should be pointed out that this publication is inten
6、ded to replace a previous publication:ASTM Viscosity Index Tables,STP No.168.The adoption of ASTM Method D2270 for Calculating Viscosity Index from Kinematic Viscosity,has changed the viscosity index values above 100 VI as compared to those previously obtained by ASTM Method D567 for Calculating Vis
7、cosity Index or STP No.168.The reader is referred to Method D2270-64 and the Introduction to this publication for details of this change.The studies leading to the change in calculating viscosity index are the result of recommendations by the Third and Fourth World Petroleum Congresses that a method
8、 be selected which would avoid the problems which ultimately developed in the use of Method D567-53.The work leading to the adoption of Method D2270-64,and this volume,began in the year,1956.An exhaustive study was made of all available proposals.It is difficult to give proper acknowledgment to all
9、of those who contributed over the period of study.A following page does list the Officers of Research Division VII and the members of Section C of Research Division VII at the time at which the work was culminated.This publication is unique in that it has been produced almost entirely by computer te
10、chniques.Brief details of the procedure are given in a later section.In this regard,special acknowledgment should be given to the ASTM staff for their foresighted interest in the computer production technique;their direct assistance has been an important contribution.W.A.Wright,Chairman Research Div
11、ision VII ASTM Committee D-2 September,1965 Officers of RESEARCH DIVISION VII ON FLOW PROPERTIES Chairman:W.A.Wright,Sun Oil Co.Secretary:J.W.Blattenberger,Cities Service Research and Development Company Personnel of SECTION C ON VISCOSITY-TEMPERATURE RELATIONSHIPS W.A.Wright(Chairman),Sun Oil Compa
12、ny J.W.Blattenberger,Cities Service Research and Development Company W.Hart,Kendall Refining Company C.M.Murphy,Jr.,Naval Research Laboratory T.W.Selby,General Motors Corporation G.K.Vick,Esso Research and Engineering Company J.S.Wiberly,Socony Mobil Oil Company INTRODUCTION The tables in this publi
13、cation permit direct reading of the Viscosity Index of a petroleum product or lubricant if its kinematic viscosities at 100 F and 210 F are known.Use of these tables eliminates the calculation required for determining Viscosity Index.Definition The Viscosity Index is an empirical number that indicat
14、es the effect of change of temperature on the viscosity of an oil.A low Viscosity Index signifies relatively large change of viscosity with temperature.Calculation of Viscosity Index The viscosity index of an oil is calculated from its viscosity at 100 F(37.8 C)and at 210 F(98.9 C).The procedure for
15、 its calculation is described in ASTM Method D2270 for Calculating Viscosity Index from Kinematic Viscosity.Table I of the Method lists the basic values of the reference series used in the calculation.Viscosity index values from 0 to 100 VI are identical to those used previously in ASTM Method D567.
16、The calculation procedure and the viscosity index values above 100 VI have been changed by the new Method D2270,and result in values which are more representative of the viscosity-temperature characteristics of the oil.The accuracy of the calculated viscosity index value is dependent on the accuracy of the viscosity determinations.It is recommended that these values be reported only to whole numbers and the use of decimal values be avoided.Scope of Tables These tables are arranged according to k
