#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 # # 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. May 1990 pp.165-174 # Some long life load control tests included: see table below for details # Data points digitzed from graphs and may contain errors. # #FileType= strain_life #DataType= raw #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) #TotStrAmpl 2Nf StsAmpl So PlasStrAmpl Init.Modulus NeubEqStsAmp 0.00570 2279 735 0 0.00218 209090 936 0.00500 4740 698 0 0.00166 209090 854 0.00410 12629 667 0 0.00091 209090 756 0.00370 28167 654 0 0.00057 209090 711 0.00320 66617 648 0 0.00010 209090 659 0.00300 132199 614 0 0.00007 209090 620 0.00280 313446 554 0 0.00015 209090 570 0.00230 1978342 481 0 0.00000 209090 481 #runout #Points above were Strain control tests. # #Points below were Load control tests. 0.00287 72309 600 0 0.00000 209090 600 0.00239 456834 500 0 0.00000 209090 500 # #