# # Fitted Curve ! # SAE9310 Q+T Simulated Carburized Core Rc=26 # Material cyclically softens substantially. # ElecFurnace, ConCast(166mm billet), HotRolled to 44.5mm bar, # Heat treatement not documented. 100%Martensite # Inclusions: TypeABC=non obsv., TypeD=1.0 # Test: UoWaterloo, A.Rteil and T.Topper May2005 # saedigcurve_v2.2.f starts. #FileType= strain_life #DataType= fitted #Name= SAE9310 #Name= Quench+Temp #Name= AISIiter_57 #Units= MPa #Sy= 804.0 #Su= 902.0 #E= 197000 #monotonic_K= 1135.7 #monotonic_n= 0.055 #FractureStrain= 1.23 #FractureStress= 1261. #%RA= 70.8 #MaterialForm= bar #FailureDef= 50% load drop #Hardness, Rockwell C= 26 #Bhn= 258 #Basic Oxygen= False #Electric Furnace= True #Vacuum Degas= False #Ladle Refined= False #Ingot Cast= False #Continuous Cast= True #Martensite, %= 100 #Carbon, %= 0.11 #Manganese, %= 0.7 #Phosphorus, %= 0.007 #Sulfur, %= 0.015 #Silicon, %= 0.22 #Copper, %= 0.17 #Nickel, %= 3.08 #Chromium, %= 1.15 #Molybdenum, %= 0.12 #Aluminum, %= 0.020 #Calcium, %= 0.00 #Boron, %= 0.0002 #Tin, %= 0.010 #Nitrogen, ppm= 75 # SAE9310 Quench+Tem BHN= 258 Fn= 0 # Monotonic Props. Cyclic Props. #ELAS. MOD.= 28572. KSI, 197. GPA K' = 169.4 KSI, 1168.MPA #YIELD,0.2%= 117. KSI, 804. MPA N' = 0.1030 #ULT. STRG.= 131. KSI, 902. MPA F. STRG COEF= 144.1 KSI, 993.MPA #K = 0.0 KSI, 0. MPA F.STRG EXP, b=-0.0515 #N = 0.0000 FAT DUCT COEF= 0.2075 #RED. IN AREA = 70.8 F.DUCT EXP, c=-0.5003 #T. FRAC. STG.= 182.9 KSI, 1261. MPA Exp Cyc Yld = 89. Ksi, 616.MPA #T. FRAC. STR.= 1.230 Fit Cyc Yld = 89. Ksi, 613.MPA #No. fatigue data points= 19 # # NOTE!! The Following Points are <b>FITTED DATA:</b>#NOTE!! Fitted Stress computed using Experm. K' and n' # NOTE!! Adjusted short life and fatigue limit manually. FAC Aug2009 #Stress_Units= MPa # Total Strain 2Nf Stress Mean Plastic Strain Initial # Amp Amp Stress Amp Elastic Mod. 1.23 1 1261. 0. 1.22 197000. #Fitted_point manually 0.01008 1000 688.2 0. 0.00659 197000. #Fitted_point 0.00804 2000 665.4 0. 0.00466 197000. #Fitted_point 0.00618 5000 636.4 0. 0.00295 197000. #Fitted_point 0.00521 10000 615.2 0. 0.00208 197000. #Fitted_point 0.00449 20000 594.7 0. 0.00147 197000. #Fitted_point 0.00381 50000 568.5 0. 0.00093 197000. #Fitted_point 0.00344 100000 549.4 0. 0.00065 197000. #Fitted_point 0.00315 200000 530.7 0. 0.00046 197000. #Fitted_point 0.00286 500000 506.8 0. 0.00028 197000. #Fitted_point 0.00268 1000000 489.2 0. 0.00020 197000. #Fitted_point manually .00245 3926860 446 0.0 0.00019 197000. #Fitted_point manually .00245 10000000 446 0.0 0.00019 197000. #Fitted_point manually #