# # Fitted Curve ! #saedigcurve_v2.2.f starts. # AISI SAE1090M Hot Form-Accelerated Cooled AISI Bar Group It 7 # ElecFurnace, ConCast(152x152mm), HotRolled to 15.9mmBar. Forged # Inclus: TypeA=1, Types B,C,D not found. 95+%Pearlite, 5%Martensite # 0.87%C 1.00Mn .017P .026S .58Si .12Cu .05Ni .15Cr .05Mo .094V .006Nb # Test:UoWaterloo, A.Varvani-Farahani, T.Topper, May 1998 Rc=38 # #FileType= strain_life #DataType= fitted #Fn= 673 #Name= SAE1090M #Name= AisiIt_07 #Stress_units= MPa #Strain_units= strain #Sy= 1065.0 #Su= 1388.0 #E= 217000 #monotonic_K= 2202.0 #monotonic_n= 0.168 #LowerYield= 978.6 #UpperYield= 987.5 #FractureStrain= 0.30 #FractureStress= 1427 #%RA= 25. #MaterialForm= bar #FailureDef= 50% load drop #BHN= 357 #Hardness, Rc= 38 #StrAmp 2Nf StsAmp So CalcPlasStr InitialModulus #Basic Oxygen= False #Electric Furnace= True #Vacuum Degas= False #Ladle Refined= False #Ingot Cast= False #Continuous Cast= True #Martensite, %= 5 #Pearlite, %= 95 #Carbon, %= 0.87 #Manganese, %= 1 #Phosphorus, %= 0.017 #Sulfur, %= 0.026 #Silicon, %= 0.58 #Copper, %= 0.12 #Nickel, %= 0.05 #Chromium, %= 0.15 #Molybdenum, %= 0.05 #Vanadium, %= 0.09 #Columbium/Niobium, %= 0.01 # SAE1090M AisiIt_07 BHN= 357 Fn= 673 # Monotonic Props. Cyclic Props. #ELAS. MOD.= 31473. KSI, 217. GPA K' = 333.2 KSI, 2297.MPA #YIELD,0.2%= 154. KSI, 1065. MPA N' = 0.1840 #ULT. STRG.= 201. KSI, 1388. MPA F. STRG COEF= 317.8 KSI, 2191.MPA #K = 0.0 KSI, 0. MPA F.STRG EXP, b=-0.1162 #N = 0.0000 FAT DUCT COEF= 0.7739 #RED. IN AREA = 25.0 F.DUCT EXP, c=-0.6314 #T. FRAC. STG.= 207.0 KSI, 1427. MPA Exp Cyc Yld = 106. Ksi, 732.MPA #T. FRAC. STR.= 0.300 Fit Cyc Yld = 106. Ksi, 731.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!! Short life and Fatigue limit fitted manually FAC Jul-09 #Stress_Units= MPa # Total Strain 2Nf Stress Mean Plastic Strain Initial # Amp Amp Stress Amp Elastic Mod. .30 1 1427. 0. .2934 217000. #Fitted_point manually 0.01055 2000 884.0 0. 0.00647 217000. #Fitted_point 0.00733 5000 804.6 0. 0.00362 217000. #Fitted_point 0.00577 10000 748.7 0. 0.00232 217000. #Fitted_point 0.00468 20000 696.0 0. 0.00148 217000. #Fitted_point 0.00371 50000 630.5 0. 0.00080 217000. #Fitted_point 0.00319 100000 583.8 0. 0.00050 217000. #Fitted_point 0.00279 200000 539.6 0. 0.00031 217000. #Fitted_point 0.00279 10000000 539.6 0. 0.00031 217000. #Fitted_point manually #