ASTM_DS5S2-1969.pdf

AN EVALUATION OF THE YIELD,TENSILE,CREEP,AND RUPTURE STRENGTHS OF WROUGHT 304,316,321,AND 347 STAINLESS STEELS AT ELEVATED TEMPERATURES Prepared for the METALS PROPERTIES COUNCIL by G.V.Smith#ASTM Data Series DS 5S2(Supplement to Publication DS5,formerly STP 124)Published by the AMERICAN SOCIETY FOR TESTING AND MATERIALS 1916 Race Street,Philadelphia,Pa.19103 Related Publications Report on the Elevated-Temperature Properties of Stainless Steels,DS 5 Supplement(to the above report),DS 5S1 Reports on the Elevated-Temperature Properties of:Chromium-Molybdenum Steels,DS 6 Carbon Steels,DS 11 Copper and Copper Base Alloys,DS 12 Wrought Phosphor Bronze Alloys,DS 13 Steel and Super Strength Alloys,DS 14 Wrought Medium-Carbon Alloy Steels,DS 15 Weld-Deposited Metal and Weldments,DS 16 Chromium Steels,DS 18 Cast Iron,DS 19 Aluminum Alloys,DS 20 Metals and Alloys from Cryogenic to Elevated Temperatures,DS 22 By American Society for Testing and Materials 1969 Library of Congress Catalog Card Number:78-77331 SBN 8031-2000-1 Note The Society is not responsible,as a body,for the statements and opinions advanced in this publication.Printed in Alpha,New Jersey February 1969 Data Series DS 5 S2 The American Society for Testing and Materials Contents Summary 1 Introduction 2 Evaluation Procedures 5 Yield Strength and Tensile Strength 6 Creep and Rupture Strengths 13 Charts 28 Summary This report offers evaluations of elevated temperature strength data for a number of wrought austenitic stainless steels,types 304,304L,316,316L,321,and 347.The data were previously published in ASTM Special Technical Publication No.124,The Elevated Temperature Properties of Stainless Steels(1952),and in a supplement to that report,ASTM Data Series Publication DS5-S1(1965).The evaluations have been made for the Metal Properties Council under a subcommittee,of which Dr.M.Semchyshen is Chairman.They seek to offer best current assessments of the various properties that commonly form the basis for the setting of allowable stresses,and are presented in a form readily usable by Code groups for such a purpose.The body of the report provides,in text,figures and tables,details concerning the materials,the evaluation procedures that were employed,and the results that were achieved.On the pages immediately following this abstract are provided for each of the individual grades of steel,in turn,graphical summaries of the different properties evaluated,Figures 1-7;these are followed by graphical comparisons of the different grades with one another,Figures 8-11.DS6-S2-EB/Feb.1969Copyright 1969 by ASTM International www.astm.org Introduction One of the most important functions for which the Metal Properties Council was organized is that of gathering,evaluating,and publishing available data on the engineering properties of metals In this activity,the Council will continue and extend similar work carried on by the Joint Committee on Effect of Temperature on Properties of Metals sponsored since its organization in 1925 by ASME and ASTM,and now also by the Metal Properties Council.The data that are evaluated in this report were originally gathered by the Joint Committee or by the ASME Boiler and Pressure Vessel Committee,which in turn made them available to the Joint Committee.The data were obtained from many different industrial and governmental test laboratories in the United States,and,in general,do not represent coordinated test programs.The data are included in an ASTM report,Special Technical Publication No.124,Elevated Temperature Properties of Stainless Steels published in 1952 and in a supplement to that report,ASTM Data Series Publication DS5-S1,published in 1965.However,not all of the previously published data are considered in the present evaluation.Data representing material not conforming with current ASTM specifications in respect to chemical composition,mechanical properties,and processing practices have been excluded.Since the original:data were included in ASTM STP No.124 or ASTM DS5-S1,they are not tabulated in the present report.However,all of the data considered in the.present evaluation appear.as individual points.on the plots of.yield and tensile strength vs_ temperature,or of stress vs_ creep rate or rupture time.1250 7.6 10.8 12.0 11.0 12.7 O 1300 6.0 8.5 9.45 8.5 9.9 1350 4.7 6.7 7.45 6.6 7.7 1400 3.7 5.3 5.9 5.1 6.0 1450 2.9 4.15 4.6 3.95 4.7 1500 2.3 3.25 3.61 3.05 3.7 1550 1.8 1600 1.41(1),(1)316-(1)347-316 H 321 347-347 H Adj.321 Adj.321 H 347 H Adj.43.5 40.0*48.0 52.7 34.4 31.0*31.5 31.5 36.0 39.5 26.8 23.5 23.8 24.8 27.5 30.2 21.0 17.3 17.6 19.3 20.5 22.5 16.4 12.9 13.1 15.2 15.6 17.13 12.9 9.7 9.85 11.8 11.9 13.1 10.0 7.2 7.3 9.2 9.0 9.9 7.8 5.4 5.5 7.2 6.8 7.5 6.06 4.0 4.05 5.6*5.1 5.6 4.75 3.05 3.10 4.4*3.85 4.23 3.74 2.28 2.32 3.4*2.90 3.18(1)Adjusted by displacement of the regression line by the amount required to effect coincidence with the mean of the visual extrapolation results at 1200 F.Table 7 Average Stress for Rupture i