# # AISI-8615 Carburized(Atmosphere) Case+Core Composite, 4pt-Bending # Shallow CaseDepth, Constant Amplitude, HRc=60 # Gerdau Ht.M35300 ElecFurn,VacDegas,LadleRefined,ConCast HotRoll 31.8mm bar # Raw Chem.: 0.11wt%C .11Mn .009P .035S .3Si .14Cu .40Ni .60Cr # .20Mo .005V .002Columb. .03Al .007Sn 15ppm_O # Inclusion Rating Type A(sulfide)=2.5T 0.5H, B=1.0T 0.0H, # C=0.5T 0.0H, D=1.5T 0.5H Microstructure in FatigueReport. # Stress converted from loads using elastic Mc/I analysis # Moment arm of load couple is 2 inch. I =0.00065104 in^4 # Tested A.El-Menoufy UWaterloo 2014 #FileType= strain_life #DataType= raw #Name= AISI8615steel #Name= 4pt-Bend #Name= AisiIt.159 #Stress_Units= mpa #Strain_Units= strain #Sy= 0 #Su= 0 #E= 176400 average Bending Slope= Sts/Str #monotonic_K= 0 #monotonic_n= 0. #MaterialForm= bar #FailureDef= 50% load drop #BHN= 653 #Emod below is simply StsAmpl/StrAmpl #strAmpl 2Nf StsAmpl So PlsStrAmp Sts/Str 0.0085 580 1400 0 0 164777 #retest 0.00693 5480 1123 0 0 161991 0.00747 3380 1178 0 0 157730 0.00736 3080 1213 0 0 164763 #retest 0.0064 9332 1056 0 0 165066 0.00498 21572 912 0 0 183159 0.00498 20228 923 0 0 185282 0.00545 13688 987 0 0 181207 0.00442 33920 778 0 0 176112 0.00566 23700 996 0 0 175891 #retest 0.0064 10220 1067 0 0 166721 0.00432 100000 823 0 0 190612 0.00432 1000000 778 0 0 180187 0.00396 2000000 756 0 0 190888 #runout 0.00391 2000000 701 0 0 179111 #runout 0.00381 2000000 701 0 0 183807 #runout 0.00381 2000000 718 0 0 188323 #runout # #