#Copyright (C) 2011 F.D.E. Committee #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 #MERCHANTABILITY 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 # # SAE4340 heatTreated Q+T to Su=1240mpa=180ksi # Specimens from 0.75in diam. Rod, Crucible Steel Heat 136820 # 0.43C wt% .71Mn .01P .013S .24Si .86Cr 1.79Ni .27Mo .09Cu # Ref.: NAEC-ASL-1105 Report. Also: T.Endo and J.Morrow, "Cyclic Stress-Strain and # Fatigue Behavior of Representative Aircraft Metals," ASTM J.Matls. V4 N1, # March 1969, pp.159-157. # Apparently data points were average values of several tests. # NOTE: Data digitized from graphs and may contain errors. # #FileType= strain_life #DataType= raw #TIMEcol= 0 #NAME= SAE4340 #NAME= HeatTreated #NAME= SteelRod #Stress_units= mpa #Strain_units= strain #Sy= 1180. 0.2pc offset =171ksi #Su= 1240. # = 180ksi #eu= 0 #strain at Su not reported #E= 179000. #FractureStrain= 0.84 #computed from %RA #FractureStress= 1910. #BHN= 0. # not reported #%RA= 57 % #StrAmpl 2Nf StsAmpl So PlasStrAmpl IniMod NeuberStressAmpl 0.12410 19 1406 0 0.11625 179000 5588 0.08163 33 1261 0 0.07459 179000 4292 0.04592 145 1158 0 0.03945 179000 3084 0.02941 327 951 0 0.02410 179000 2237 0.01220 961 889 0 0.00723 179000 1393 0.01062 1920 751 0 0.00642 179000 1195 0.00490 11635 672 0 0.00115 179000 768 0.00323 129235 575 0 0.00002 179000 577 # #