# # SAE4140 Q+T High Sulfur(0.077%) Rc=42.5, # MacSteel Ht.M14218 ElecFurn. Concast,Normalized 1650F, # As-Forged(2150F) Reduc 83% # Quenched from 1550 into 150F oil, Temper. 750F # Inclusions: typeA(Sulf)3.5T 1.0H, TypeD(glob) 1T 0.fH # Chem.: 0.40wt%C .85Mn .013P .077S .28Si .23Cu .15Ni .99Cr # .21Mo .010Al .009Sn 94ppm_N, 100%Matensite # Test: N.Cyril UoToledo 2007 #FileType= strain_life #DataType= raw #Name= SAE4140-Q+T #Name= AisiIt_81 #Stress_units= MPa #Strain_units= strain #Sy= 1263.2 #Su= 1299.3 #eu= 0.014 engr. strain at Su #E= 209800 avrg. of 9 initial loading, Tensile=204500 #monotonic_K= 1533.8 #monotonic_n= 0.030 #FractureStrain= 0.014 range: 0.013, 0.015 #FractureStress= 1284 #%RA= 1.3 #%Elongation= 1.5% over 0.3inch gauge #MaterialForm= bar #FailureDef= 50% load drop #BHN= 395 #Hardness, Rockwell C= 42.5 #StrAmp 2Nf StsAmp So CalcPlasStr InitialModulus 0.0100 12 1237 -46.5 0.00399 202000 #IGL 0.0100 24 1220 -40.9 0.00404 204000 #IGL 0.0100 32 1216 -39.2 0.00407 207000 #IGL 0.0065 256 1052 -15.3 0.00134 208000 #IGL 0.0065 380 1045 -26.3 0.00139 211000 #IGL 0.0065 566 998 -28.0 0.00161 205000 #IGL 0.0050 1298 969 -38.6 0.00024 204000 #IGL 0.0050 1408 985 -6.7 0.00018 208000 #IGL 0.0050 1432 967 -49.2 0.00027 203000 #IGL 0.0035 9938 724 0.0 0.00000 209800 #IGL 0.0035 10720 724 0.0 0.00000 209800 #IGL 0.0035 12894 724 0.0 0.00000 209800 #IGL 0.0028 57000 569 0.0 0.00000 209800 #IGL 0.0028 85000 569 0.0 0.00000 209800 #IGL 0.0028 97000 569 0.0 0.00000 209800 #IGL 0.0023 272978 465 0.0 0.00000 209800 #IGL 0.0023 10000000 465 0.0 0.00000 209800 #Runout 0.0023 10000000 465 0.0 0.00000 209800 #Runout #Carbon, %= 0.4 #Manganese, %= 0.85 #Phosphorus, %= 0.013 #Sulfur, %= 0.077 #Silicon, %= 0.28 #Copper, %= 0.23 #Nickel, %= 0.15 #Chromium, %= 0.99 #Molybdenum, %= 0.21 #Aluminum, %= 0.010 #Tin, %= 0.009 #Nitrogen, ppm= 94 # #