# # SAE86B20 Thru Carburized Simulated Case Rc=63 100%Martensite # Material cyclically hardens substantially. # ElecFurnace, ConCast(184.2mm Billet), HotRolled to 53.2mm bar, Spec. machined # polished and then thru Carburized in atmosphere, then tested. # Inclusions: TypeA=1.5Thin, TypeBC=0, TypeD=1.5Thin # ASTM GrainSize: T-T 5 to 6, L-T=5 to 6, # Test: UoToledo, H.Zhang and A.Fatemi Apr.2005 #FileType= strain_life #DataType= raw #Name= SAE86B20 #Name= AisiIt_75 #Stress_units= MPa #Strain_units= strain #Sy= 1114.9 #Su= 1309.4 #E= 201100 average of 10 obsv. Initially reported= 200000 #monotonic_K= 6985.0 #monotonic_n= 0.293 #FractureStrain= 0.01 #FractureStress= 1312. #%RA= 0.3 #MaterialForm= bar #FailureDef= 50% load drop #BHN= 507.6 #Hardness, Rockwell C= 63 at surface, Rc=55 at center #StrAmp 2Nf StsAmp So CalcPlasStr InitialModulus 0.0094 6 1668 -326.6 0.00100 200000 #IGL 0.0079 86 1527 -233.2 0.00033 202000 #IGL 0.0078 118 1518 -222.5 0.00025 201000 #IGL 0.0078 120 1517 -242.9 0.00037 205000 #IGL 0.0064 276 1245 -146.3 0.00013 200000 #IGL 0.0065 430 1260 -193.8 0.00011 199000 #IGL 0.00497 1730 1007 -26.8 0.00000 202000 #IGL 0.00496 3186 996 19.8 0.00000 200000 #IGL 0.00499 4008 1005 34.5 0.00001 202000 #IGL 0.00375 83296 776 0.0 0.00000 201100 #IGL 0.00375 100916 776 0.0 0.00000 201100 #IGL 0.00300 145452 620 0.0 0.00000 201100 #IGL 0.00300 1262796 620 0.0 0.00000 201100 #IGL 0.00300 10000000 620 0.0 0.00000 201100 #Runout #Basic Oxygen= False #Electric Furnace= True #Vacuum Degas= False #Ladle Refined= False #Ingot Cast= False #Continuous Cast= True #Martensite, %= 100 #Carbon, %= 0.19 #Manganese, %= 0.9 #Phosphorus, %= 0.018 #Sulfur, %= 0.029 #Silicon, %= 0.24 #Copper, %= 0.24 #Nickel, %= 0.36 #Chromium, %= 0.58 #Molybdenum, %= 0.2 #Aluminum, %= 0.021 #Titanium, %= 0.034 #Calcium, %= 0.00 #Boron, %= 0.002 #Oxygen, ppm= 12 #Nitrogen, ppm= 65 # #