#Copyright (C) 2011 Fatigue Design and Evaluation Comm. #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 # # SAE 1018 Normalized, Longitudinal Specimens, tested in Oil # Specimens machined from 3.5 inch normalized forged billet. # 0.18C wt% .006P .028S .50Mn .04Si .036Cu .036Cr .008Sn .025Ni .01Mo .03Co # Hardnes Rb= 48.5, Vickes(30kg)= 101 # Sources: The data points were derived from graphs in the paper: # D.G.Havard and T.H.Topper, "Low-Cycle Biaxial Fatigue of AISI 1018 Steel," # Ontario Hydro Res. Quaterly, 2nd Q. 1969, pp.1-12. # Note: Data may contain errors from digitization process. # #FileType= strain_life #DataType= raw #TIMEcol= 0 #NAME= SAE1018steel #NAME= Normalized #NAME= test_in_oil #Name= Longitudinal #Stress_units= mpa #Strain_units= strain #Su= 422. mpa #Sy= 200. mpa #E= 206700. #Modulus not reported. Assumed=30000ksi #FractureStrain= 0.968 #FractureStress= 1102. #BHN= 82 HV-30kg= 101, HRb=48.5 #%RA= 61.8 #Elongation= 54.2 (3/8 inch G.L.) # #StrAmpl 2Nf StsAmpl So PlasStrAmpl IniMod NeuberAmpl_mpa 0.92446 1 1144 0 0.91892 206700 14788 0.06619 47 648 0 0.06305 206700 2977 0.02964 189 499 0 0.02723 206700 1748 0.01984 480 458 0 0.01763 206700 1370 0.01295 1048 347 0 0.01127 206700 964 0.00983 2268 331 0 0.00823 206700 820 0.00736 3579 303 0 0.00589 206700 679 0.00446 11262 286 0 0.00308 206700 513 0.00361 26001 237 0 0.00246 206700 420 0.00284 32232 222 0 0.00176 206700 361 0.00179 176347 144 0 0.00109 206700 230 0.00119 1808502 132 0 0.00055 206700 180 0.00092 17243730 182 0 0.00003 206700 186 #runout #0.00030 17397790 117 0 0.00000 206700 85 #runout #0.00059 17697480 59 0 0.00000 206700 84 #runout # #