# # SAE8615 Case+Core Carburized AISI It.157 Axial spec. HRc=60 # Constant Ampl. tests # Carburized in Atmosphere, Shallow Carbur. Depth. # Gerdau Ht. M35300 Elec.Furn., VacDegas, LadleRefined, ConCast # HotRolled 31.8mm bar, See fatigue report for Micro. # Elec.Furnace, VacDegas, LadleRefined, ConCast HotRolled 31.8mm bar # 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_157 #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) #%Elongation= 8.1 % #%RA= 8.47 #FractureStrain= 0.085 #FractureStress= 1100 from graph, Reported=853 ?wrong? #BHN= 653 #StrAmp 2Nf StsAmp So PlasStrAmp initEmod 0.0093 122 1085 -133.3 0.00481 212000 0.008 328 1034 -62.8 0.0029 203000 0.008 384 1016 -83 0.00295 201000 0.006 2140 900 13.4 0.0017 209000 0.006 2784 885 -19.6 0.00176 209000 0.005 9958 813 -69.7 0.00104 205000 0.005 15400 835 17 0.00105 211000 0.005 92482 790 -81.3 0.00125 210000 0.00349 136493 665 13.2 0.00024 205000 0.004 147660 706 -24.4 0.00062 209000 0.0035 190638 660 -76 0.00032 208000 0.00399 244718 705 -15.9 0.00065 208000 0.00275 10000000 571 -53.7 0 206000 #runout 0.00275 10000000 567 -43.4 0 207000 #runout # #