# # SAE4120(Mod) 1700F Carburized Case+Core HRc=57.6 on surface # Const.Ampl. Four Pt bending tests. # Original Chem: .20C .83Mn .009P .008S .31Si .85Cr .15Ni .20Mo # .20Cu .040Al .0006Ca .0010Pb # Heat treat furnace problem. Specim. were re-heated and queched. # Stress converted from loads using Mc/I analysis # Moment arm of load couple is 2 inch. I =0.00065104 in^4 # There were mean loads observed during testing # Tested U.Waterloo, W.Liang 2018 #FileType= strain_life #DataType= raw #Name= AISI 4120 Steel #Name= BendingSample #Name= Iter211 #Stress_Units= ksi #Strain_Units= strain #Sy= 0 #Su= 0 #E= 30752. #monotonic_K= 0 #monotonic_n= 0. #MaterialForm= bar #FailureDef= 50% load drop #BHN= 607 HRc=57.6 on surface #Note!: StsAmp below is Bending Stress. iniEmod= Sts/Str #StrAmp 2Nf StsAm So PlsStr iniEmod 0.00996 266 310 0 0 31148 0.00825 1518 251 0 0 30429 0.00818 3002 243 0 0 29769 0.00787 3030 215 0 0 27355 0.00719 25030 190 0 0 26403 0.00714 7026 225 0 0 31462 0.00684 56260 184 0 0 26947 0.00637 190626 178 0 0 27918 0.00600 52820 195 0 0 32520 0.00575 153988 178 0 0 30956 0.00538 36632 191 0 0 35587 0.00516 278540 161 0 0 31240 0.00495 90160 150 0 0 30334 0.00492 798418 155 0 0 31447 0.00480 365418 165 0 0 34386 0.00469 2000000 142 0 0 30224 #runout 0.00438 2000000 142 0 0 32438 #runout 0.00402 2000000 123 0 0 30507 #runout 0.00401 2000000 133 0 0 33217 #runout # #