# SAE8615 Case+Core Carburized AISI It.158 Axial spec. POL HRc=60 # NOTE !! Periodic overload tests at long life ! # Carburized in Atmosphere, Shallow Carbur. Depth. # Gerdau Ht. M35300 Elec.Furn., VacDegas, LadleRefined, ConCast # HotRolled 31.8mm bar, See fatigue report for Micro. # Original Chem.: 0.11C 0.84Mn .009P .035S .3Si .14Cu .4Ni .6Cr .2Mo # .005V .002Columb/Niob. .03Al .007Sn 15ppm_O then Carburized # InclusionRating: TypeA=2.5T 0.5H B=1.0T 0.0H C=0.5T 0.0H D=1.5T 0.5H # Tested at U.Dearborn 2016 #FileType= strain_life #DataType= raw #Name= SAE8615 #Name= Carburized-Rc=60 #Name= aisiIt_158 #Stress_units= mpa #Strain_units= strain #monotonic_K= 3254 #monotonic_n= 0.203 #Su= 1154 #Sy= 921 #E= 207400 avg or all initial Emods #eu= 0.012 strain at Su (at case fracture) #%RA= 8.47 % #%Elongation= 8.1 % #FractureStrain= 0.085 #FractureStress= 1100 from graph, Reported=853 ?wrong? #BHN= 653 #StrAmp 2Nf StsAmp So PlasStrAmp initEmod 0.00993 122 1085 -133.3 0.00481 212000 0.00800 328 1034 -62.8 0.0029 203000 0.00800 384 1016 -83 0.00295 201000 0.00600 2140 900 13.4 0.0017 209000 0.00600 2784 885 -19.6 0.00176 209000 0.00500 9958 813 -69.7 0.00104 205000 0.00500 15400 835 17 0.00105 211000 0.00500 92482 790 -81.3 0.00125 210000 0.00400 147660 706 -24.4 0.00062 209000 0.00399 244718 705 -15.9 0.00065 208000 #0.00350 190638 660 -76 0.00032 208000 #0.00349 136493 665 13.2 0.00024 205000 #0.00275 10000000 571 -53.7 0 206000 #runout #0.00275 10000000 567 -43.4 0 207000 #runout #Data above is const ampl. from iter 157 #A "#" in 1st char makes line a comment(unused) #Below is periodic overload tests #StrAmpl 2Nf StsAmpl So PlsStrAmpl initEmod 0.00275 416442 508.9 190.2 0.00028 205700 #KE 0.00250 614522 478 178.1 0.00022 210000 #KE 0.00225 824230 430.9 292.9 0.00015 205500 #IGL 0.00195 3063290 394.9 323.4 0.00003 205900 #IGL # #