#
# NOTE!! Fitted Curve data !! # SAE1552 Simul.Core Induction hardened AISI Iter.94 HRc=24 # As-Rolled Simulated Induction Hardened Core # MacSteel Monrow Heat M10473 ElecFurn LadleRef. Concast HorRolled 25.7mm bar # Chem.: 0.52%C 1.43Mn .011P .012S .24Si .09Cu .09Ni .10Cr .01Mo # .066V .001Nb .001Al .0001Pb .001Ti .01Co .0003B .005Sn 115pppm_N # Axial Specimens machined, induction hardened, polished. # Inclusion Rating Type A (sulfide) 1.3T 0.1H Type B (alumina) 0.7T 0.0H # Type C (silicate) 0.3T 0.0H Type D (globular) 0.8T 0.1H # Pearlite 65% Ferrite 35% ASTM Grain Size No. (Min to Max)= 5 to 8 # Tested by A.A. Rteil Uwaterloo, 2006 #FileType= strain_life #DataType= fitted #Name= SAE1552 #Name= AisiIt_94 #Stress_units= MPa #Strain_units= strain #Sy= 420.0 #Su= 964.0 #E= 196000 #monotonic_K= 2127.0 #monotonic_n= 0.261 #MaterialForm= bar #FailureDef= 50% load drop #Hardness, Rockwell C= 24 #BHN= 247 #Original No. fatigue data points= 20 # #NOTE!! The Following Points are FITTED DATA: #NOTE!! Fitted Stress computed using Experm. K' and n' #NOTE!! Manually adjusted Fatigue limit points. FAC may09 #_Total Strain 2Nf Stress Mean Plastic Strain #_ Amp Amp Stress Amp EMod. 2.65316 1 1441.6 0. 2.64580 196000. #Fitted_point 1.57570 2 1357.8 0. 1.56877 196000. #Fitted_point 0.79255 5 1254.5 0. 0.78615 196000. #Fitted_point 0.47219 10 1181.5 0. 0.46616 196000. #Fitted_point 0.28211 20 1112.9 0. 0.27644 196000. #Fitted_point 0.14381 50 1028.2 0. 0.13856 196000. #Fitted_point 0.08713 100 968.4 0. 0.08219 196000. #Fitted_point 0.05341 200 912.2 0. 0.04875 196000. #Fitted_point 0.02875 500 842.8 0. 0.02445 196000. #Fitted_point 0.01856 1000 793.9 0. 0.01451 196000. #Fitted_point 0.01243 2000 747.8 0. 0.00861 196000. #Fitted_point 0.00784 5000 690.9 0. 0.00432 196000. #Fitted_point 0.00588 10000 650.8 0. 0.00256 196000. #Fitted_point 0.00464 20000 612.8 0. 0.00151 196000. #Fitted_point 0.00364 50000 565.7 0. 0.00075 196000. #Fitted_point 0.00316 100000 532.1 0. 0.00044 196000. #Fitted_point 0.00281 200000 500.3 0. 0.00026 196000. #Fitted_point 0.00248 500000 460.6 0. 0.00013 196000. #Fitted_point 0.00228 1000000 432.6 0. 0.00007 196000. #Fitted_point 0.00211 2000000 406.2 0. 0.00004 196000. #Fitted_point .002 3000000 391. 0. 0.0 196000. #Fitted_point Adjusted .002 10000000 391. 0. 0.0 196000. #Fitted_point Adjusted #