1、 EVALUATIONS OF THE ELEVATED TEMPERATURE TENSILE AND CREEP-RUPTURE PROPERTIES OF C-Mo,Mn-Mo and Mn-Mo-Ni STEELS Prepared by G.V.Smith ASTM DATA SERIES PUBLICATION DS 47 05-047000-02 List price$6.25 AMERICAN SOCIETY FOR TESTING AND MATERIALS 1916 Race Street,Philadelphia,Pa.19103 1 BY AMERICAN SOCIET
2、Y FOR TESTING AND MATERIALS 1971 Library of Congress Catalog Card Number:70-174977 NOTE The Society is not responsible,as a body,for the statements and opinions advanced in this publication.Printed in Alpha,NJ.November 1971 Data Series DS 47 American Society for Testing and Materials Related ASTM Pu
3、blications Report on the Elevated-Temperature Properties of Chromium-Molybdenum Steels,DS 6(1953),$4.75 Supplemental Report on the Elevated-Temperature Properties of Chromium-Molybdenum Steels,DS6S1(1966),$2.25 Supplemental Report on the Elevated-Temperature Properties of Chromium-Molybdenum Steels(
4、An Evaluation of 2V4 Cr-1 Mo Steel),DS 6S2(1971),$6.00 Contents Abstract 1 Figs.1-6 3 Introduction 9 Yield Strength,Tensile Strength,Elongation,and Reduction of Area 9 Creep and Rupture Properties 11 Acknowledgments 14 References 14 Tables I-X 15 Figs.7-26 47 REFERENCE:Smith,G.V.,Evaluations of the
5、Elevated Temperature Tensile and Creep-Rupture Properties of C-Mo,Mn-Mo and Mn-Mo-Ni Steels;ASTM Data Series DS 47.American Society for Testing and Materials,1971.ABSTRACT:This report evaluates the elevated temperature strength properties of carbon-moly steel,and various modified versions of that st
6、eel commonly identified as manganese-molybdenum or manganese-molybdenum-nickel steels.The data that have been evaluated encompass test results pre-,.,viouslv included in ASTM Data Series DS 6(1953)l and DS6-S1(1966)*,and previously unpublished test results gathered by The Metal Properties Council.Em
7、ploying the method of least squares,trend curves depicting in ratio form the characteristic temperature variations of yield and tensile strengths have been developed.The rupture data have been evaluated by both direct isothermal interpolation or extrapolation,and by time-temperature parameters,to es
8、tablish the tempera-ture dependences of the average and minimum stresses to cause rupture in 1000,10,000 and 100,000 hours.The secondary creep rate data have been evaluated by direct interpolation or extra-polation to determine the temperature dependences of average and minimum stresses to cause sec
9、ondary creep rates of 0.1 and 0.01 percent per 1000 hours.These latter trend curves could be developed only for C-Mo steel,there being too few data for the remaining grades to warrant such evaluation.Elongation and reduction of area data are included for both the short time elevated temperature tens
10、ile tests and for the rupture tests.Several summary figures immediately following this abstract,Figs.1-6,show the temperature dependence of strength properties for the various grades evaluated in this report.In these figures,the yield and tensile strength curves have been computed from the respectiv
11、e ratio trend curves so that they correspond at room temperature to the specified minimum values of common ASTM specifica-tions.The body of the report provides in tables,text,and figures,details concerning the identifi-cation of the individual lots of material,fhe evaluation procedures,and the resul
12、ts.KEY WORDS:elevated temperature,tensile strength,yield strength,creen strength,rupture strength,elongation,reduction of area,carbon molv and manganese molv steels,time-temperature parameter,data evaluation,mechanical properties.DS47-EB/Nov.1971?Copyright 1971 by ASTM International www.astm.org Pig
13、.1 Effect of temperature on yield strength,tensile strength,creep strength(0.01#per 1000 hrs)and rupture strength(100,000 hrs)of C-Mo steel.Yield and tensile strengths are adjusted to 40 and 70 ksi at 75*Creep and rupture strengths are averages of available data.Fig.2 Effect of temperature on yield
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