# #Copyright (C) 2012 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 # # Note: Fitted Data !! # SAE 4140 or 42CrMo4 Quenched and tempered 4h at 570C # 0.44C wt% .32Si .73Mn 1.11Cr .22Mo .014P .028S .11Ni # Note: Short life tests show substantial cyclic softening behaviour. # See paper for details: # Ref. D.Eifler and E.Macherauch, "Microstructure and cyclic deformation # behaviour of plain carbon and low-alloyed steels," Int.J.Fat. May1990 pp.165-174 # Original test data points digitzed from graphs and may contain errors. # #FileType= strain_life #DataType= fitted #TIMEcol= 0 #NAME= SAE4140 #NAME= 42CrMo4 #Name= Q+T #Strain_units= strain #Stress_units= mpa #Sy= 1000. mpa = 145 ksi #Su= 1120. = 163 ksi #eu= 0 not reported #E= 209090 mpa = 30350. ksi #%RA= 0. % not reported #BHN= 0. not reported #FractureStrain= 0. not reported #FractureStress= 0. not reported #monotonic_K= 0 not reported #monotonic_n= 0 not reported #elongation= 12 % (gauge length not reported) #saedigcurve_v2.2.f starts. # # NOTE!! The Following Points are <b>FITTED DATA:</b>#NOTE!! Fitted Stress computed using Experm. K' and n' #TotStrAmpl 2Nf StsAmpl So PlasStrAmpl Init.Modulus NeubEqStsAmp 0.17460 1 1127.6 0. 0.16921 209090. #Fitted_point from traditional fit 0.00610 2000 741.9 0. 0.00255 209090. #Fitted_point 0.00491 5000 705.2 0. 0.00154 209090. #Fitted_point 0.00429 10000 678.5 0. 0.00104 209090. #Fitted_point 0.00383 20000 652.5 0. 0.00071 209090. #Fitted_point 0.00338 50000 619.2 0. 0.00042 209090. #Fitted_point 0.00312 100000 594.6 0. 0.00028 209090. #Fitted_point 0.00291 200000 570.6 0. 0.00018 209090. #Fitted_point 0.00269 500000 539.8 0. 0.00011 209090. #Fitted_point 0.00254 1000000 517.3 0. 0.00007 209090. #Fitted_point 0.00242 2000000 495.6 0. 0.00004 209090. #Fitted_point 0.00226 5000000 468.2 0. 0.00003 209090. #Fitted_point 0.00216 10000000 448.5 0. 0.00002 209090. #Fitted_point #