# # Fitted Data! # SAE1070 Rc=30, Bhn=286, Induction Hardened Aisi Iter_36 # Heat treated to simulate core of an Induction Hardened part # BasicOxygen, LadleRefined, ConCast(310x372mm) HotRolled to 50mmBar. # Tested as received. 69%Pearlite, 31%Ferrite, # Inclusions: TypeA,B,C= none, TypeD=1 # Considerable scatter in two Tensile tests # Test: UoWaterloo, M.Kalil, T.Topper. Oct.2000 # saedigcurve_v2.2.f starts. #FileType= strain_life #DataType= fitted #Name= SAE1070 #Name= AisiIt_36 #Stress_units= MPa #Strain_units= strain #Sy= 520.0 #Su= 659.0 #E= 207000 #monotonic_K= 1485.0 #monotonic_n= 0.177 #FractureStrain= 0.459 #FractureStress= 1360 (Bridgeman corrected) #%RA= 36. #MaterialForm= bar #FailureDef= 50% load drop #BHN= 280 #Hardness, Rockwell C= 30 Ranges from Rc=26 to Rc=34 #Basic Oxygen= True #Electric Furnace= False #Vacuum Degas= False #Ladle Refined= True #Ingot Cast= False #Continuous Cast= True #Pearlite, %= 69 #Ferrite, %= 31 #Carbon, %= 0.7 #Manganese, %= 0.98 #Phosphorus, %= 0.014 #Sulfur, %= 0.024 #Silicon, %= 0.28 #Copper, %= 0.02 #Nickel, %= 0.01 #Chromium, %= 0.11 #Molybdenum, %= 0.05 #Aluminum, %= 0.031 #Nitrogen, ppm= 33 # SAE1070 AisiIt_36 BHN= 280 Fn= 0 # Monotonic Props. Cyclic Props. #ELAS. MOD.= 30023. KSI, 207. GPA K' = 289.4 KSI, 1995.MPA #YIELD,0.2%= 75. KSI, 520. MPA N' = 0.2311 #ULT. STRG.= 96. KSI, 659. MPA F. STRG COEF= 232.2 KSI, 1601.MPA #K = 0.0 KSI, 0. MPA F.STRG EXP, b=-0.1166 #N = 0.0000 FAT DUCT COEF= 0.3861 #RED. IN AREA = 36.0 F.DUCT EXP, c=-0.5044 #T. FRAC. STG.= 197.3 KSI, 1360. MPA Exp Cyc Yld = 69. Ksi, 475.MPA #T. FRAC. STR.= 0.459 Fit Cyc Yld = 70. Ksi, 482.MPA #No. fatigue data points= 22 # # NOTE!! The Following Points are <b>FITTED DATA:</b>#NOTE!! Fitted Stress computed using Experm. K' and n' # NOTE!! Fitted short life and Fatigue limit manually. #Stress_Units= MPa # Total Strain 2Nf Stress Mean Plastic Strain Initial # Amp Amp Stress Amp Elastic Mod. .459 1 1360. 0. .452 207000. #Fitted_point manually 0.02055 500 765.2 0. 0.01685 207000. #Fitted_point 0.01530 1000 709.3 0. 0.01187 207000. #Fitted_point 0.01154 2000 657.4 0. 0.00836 207000. #Fitted_point 0.00813 5000 594.4 0. 0.00525 207000. #Fitted_point 0.00635 10000 550.6 0. 0.00369 207000. #Fitted_point 0.00505 20000 509.9 0. 0.00259 207000. #Fitted_point 0.00384 50000 460.3 0. 0.00161 207000. #Fitted_point 0.00318 100000 425.7 0. 0.00113 207000. #Fitted_point 0.00268 200000 393.4 0. 0.00078 207000. #Fitted_point .00228 500000 336. 0. .00063 207000. #Fitted_point manually .00228 10000000 336. 0. .00063 207000. #Fitted_point manually #