#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 Air. # 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_air #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 0.91680 1 1173 0 0.91112 206700 14910 0.07016 44 595 0 0.06729 206700 2937 0.02868 189 563 0 0.02596 206700 1827 0.02001 348 486 0 0.01765 206700 1417 0.01472 931 366 0 0.01295 206700 1055 0.00967 2613 354 0 0.00796 206700 842 0.00692 4614 302 0 0.00546 206700 657 0.00459 8009 288 0 0.00319 206700 523 0.00367 13652 261 0 0.00241 206700 445 0.00239 45468 212 0 0.00136 206700 324 0.00182 81285 193 0 0.00089 206700 269 0.00148 236201 171 0 0.00065 206700 229 0.00093 1064010 115 0 0.00037 206700 149 # #