# AISI 20MoCr4 steel Q+T Simul. Carbur.Core (Vacuum) HRc= 35 # Periodic Overload tests. # Axial spec. from 30mm bar # Bainite, %= 60 #Martensite, %= 30 #Ferrite, %= 10 # Original Chem. Gerdau H-M11652: 0.21C .75Mn .011P .026S .30Si .19Cu # .09Ni .48Cr .44Mo .005V .002Co .028Al .0008Ca .008Sn 98ppmNi # Gerdau H-M11652 Elec Furn. VacDegas LadleRefined, ConCast 152x152mm # Mean Stresses in tests indicate possible Retained Austenite(not measured) # Tested by Yikai Yin UMDearborn 2014 #FileType= strain_life #DataType= raw #Name= 20MoCr4 #Name= AisiIt140 #Name= Simul.Carb.Core #Stress_units= MPa #Strain_units= strain #Sy= 869.7 mpa #Su= 1288.3 #E= 208400 #%RA= 51.6 #monotonic_K= 1642.1 #monotonic_n= 0.062 #MaterialForm= bar #FailureDef= 50% load drop #BHN= 326 from Rockwell C= 35 #StrAmp 2Nf StsAmp So PlsStrAmp InitEmod 0.019910 448 1178 -39.0 0.014120 204000 #IGL 0.019970 544 993 -23.0 0.015180 207000 #IGL 0.009990 1874 977 -20.9 0.005290 208000 #IGL 0.009990 2198 847 -15.1 0.005870 205000 #IGL 0.005990 12038 731 -7.6 0.002460 207000 #IGL 0.005990 12044 830 -19.6 0.001980 207000 #IGL #Data above is from Const Ampl #Data below is from periodic overload tests 0.002 116454 387.2 0 0.00015 209300 0.00175 184002 354.3 0 0.00005 208700 0.0015 276716 305.9 0 0.00002 206700 0.00125 409074 259.9 0 0.00001 209900 0.001 1163046 189.1 0 0.00008 206400 # #