# All of the data below was derived, but not copied, from the NASA Tech. # Note D-1574.The derivations and additions have been made by the members # of the FD&E committee of the SAE. Thus: # # Copyright (C) 1999 Fatigue Design & Evaluation Committee of the SAE. # This data file is free software; you can redistribute it and/or modify # it under the terms of the GNU General Public License as published by # the Free Software Foundation; either version 2 of the license, or (at # your option) any later version. # # This data file is distributed in the hope that it will be useful, but # WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTA- # BILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public # License for more details. # # You should have received a copy of the GNU General PUblic License along # with this program; if not, write to the Free Software Foundation, Inc., # 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. Try also their # web site: http://www.gnu.org/copyleft/gpl.html # #Fn= 34 # AISI 4340 ALLOY, HOT ROLLED AND ANNEALED, # Hour Glass Test Section 0.25in. diam. min. # SMITH, HIRCHBERG, MANSON, NASA TN D-1574, 1963 # Rc=22-24measured = BHN 243 # #FileType= strain_life #DataType= fitted #TIMEcol= 0 #NAME= SAE4340_steel #Name= HotRolled+Annealed #UNITS= KSI #Stress_units= ksi #Strain_units= strain #Su= 119.90 #Sy= 92.00 #E= 27978. #%RA= 43.4 #BHN= 243. #NO. FAT. PTS.= 11 #Tot Strain 2Nf Stress Mean Plastic Strain Initial # Amp Amp Stress Amp Elastic Mod. # SAE4340_st HotRolled+ BHN= 243 Fn= 0 # Monotonic Props. Cyclic Props. #ELAS. MOD.= 27978. KSI, 193. GPA K' = 193.9 KSI, 1337.MPA #YIELD,0.2%= 92. KSI, 634. MPA N' = 0.1681 #ULT. STRG.= 120. KSI, 827. MPA F. STRG COEF= 173.8 KSI, 1198.MPA #K = 0.0 KSI, 0. MPA F.STRG EXP, b=-0.0946 #N = 0.0000 FAT DUCT COEF= 0.5216 #RED. IN AREA = 43.4 F.DUCT EXP, c=-0.5629 #T. FRAC. STG.= 0.0 KSI, 0. MPA Exp Cyc Yld = 68. Ksi, 470.MPA #T. FRAC. STR.= 0.000 Fit Cyc Yld = 68. Ksi, 471.MPA #No. fatigue data points= 11 # # NOTE!! The Following Points are <b>FITTED DATA:</b> #UNITS= KSI #Stress_Units= KSI # Total Strain 2Nf Stress Mean Plastic Strain Initial # Amp Amp Stress Amp Elastic Mod. 0.52777 1 173.8 0. 0.52156 27978. #Fitted_point 0.35888 2 162.7 0. 0.35307 27978. #Fitted_point 0.21613 5 149.2 0. 0.21079 27978. #Fitted_point 0.14769 10 139.7 0. 0.14269 27978. #Fitted_point 0.10127 20 130.9 0. 0.09660 27978. #Fitted_point 0.06196 50 120.0 0. 0.05767 27978. #Fitted_point 0.04306 100 112.4 0. 0.03904 27978. #Fitted_point 0.03019 200 105.2 0. 0.02643 27978. #Fitted_point 0.01923 500 96.5 0. 0.01578 27978. #Fitted_point 0.01391 1000 90.4 0. 0.01068 27978. #Fitted_point 0.01026 2000 84.6 0. 0.00723 27978. #Fitted_point 0.00709 5000 77.6 0. 0.00432 27978. #Fitted_point 0.00552 10000 72.7 0. 0.00292 27978. #Fitted_point 0.00441 20000 68.1 0. 0.00198 27978. #Fitted_point 0.00341 50000 62.4 0. 0.00118 27978. #Fitted_point 0.00289 100000 58.4 0. 0.00080 27978. #Fitted_point 0.00250 200000 54.7 0. 0.00054 27978. #Fitted_point 0.00212 500000 50.2 0. 0.00032 27978. #Fitted_point 0.00190 1000000 47.0 0. 0.00022 27978. #Fitted_point 0.00172 2000000 44.0 0. 0.00015 27978. #Fitted_point 0.00153 5000000 40.4 0. 0.00009 27978. #Fitted_point 0.00141 10000000 37.8 0. 0.00006 27978. #Fitted_point 0.00131 20000000 35.4 0. 0.00004 27978. #Fitted_point 0.00118 50000000 32.5 0. 0.00002 27978. #Fitted_point 0.00110 100000000 30.4 0. 0.00002 27978. #Fitted_point 0.00103 200000000 28.5 0. 0.00001 27978. #Fitted_point 0.00094 500000000 26.1 0. 0.00001 27978. #Fitted_point 0.00088 1000000000 24.4 0. 0.00000 27978. #Fitted_point #Here is the bottom part of the html graph/calc wrapper----------- # #