# # SAE4620 Rc=29 Heat treat to Simulated Core for Carburized material # Timken Ht. 28579 ElecFurn, ConCast(279x375mm), HotRolled to 48mmBar, # EDM to 0.5inch, Quench+Temper then machined , ASTM Grainsize 4 to 5 # 10%Ferrite, 45%Martensite, 45%Bainite # Chem.: 0.20wt%C .58Mn .01P .016S .21Si .16Cu 1.7Ni # .15Cr .26Mo 0V # Inclusions: TypeA=2.5Thin, TypeB,C,D=none, BHN=289, Rc=29 # Test: UoToledo: F.Yin, A.Fatemi, Oct.2001 #FileType= strain_life #DataType= raw #Name= SAE4620 #Name= AisiIt_47 #Name= Q+T #Stress_units= MPa #Strain_units= strain #Sy= 687.5 #Su= 997.8 #eu= 0.082 engr. strain at Su #E= 204800 (average of 16), original reported as: 208000 #monotonic_K= 1448.1 #monotonic_n= 0.1092 #FractureStrain= 0.87 #FractureStress= 1530 #%RA= 58. % #%Elongation= 34 % #MaterialForm= bar #FailureDef= 50% load drop #BHN= 289 #Hardness, Rockwell C= 29 #StrAmp 2Nf StsAmp So CalcPlasStr InitialModulus 0.0200 308 917 2.2 0.01557 205000 #IGL 0.0200 328 939 3.1 0.01545 201000 #IGL 0.0200 334 893 3.7 0.01569 211000 #IGL 0.0100 2116 707 -2.7 0.00662 203000 #IGL 0.0100 2202 745 1.5 0.00643 202000 #IGL 0.0100 2368 737 4.2 0.00646 208000 #IGL 0.0060 8722 638 -2.2 0.00294 200000 #IGL 0.0060 10112 604 5.0 0.00310 202000 #IGL 0.0060 12064 606 3.5 0.00309 204000 #IGL 0.0040 35354 533 6.2 0.00140 210000 #IGL 0.0040 39708 572 7.8 0.00126 202000 #IGL 0.0040 40052 536 10.6 0.00141 208000 #IGL 0.0030 116480 499 58.3 0.00057 204000 #IGL 0.0030 137222 496 54.8 0.00062 204000 #IGL 0.0030 148480 522 60.5 0.00048 203000 #IGL 0.0020 1028870 411 0.0 0.00004 204800 #IGL 0.0020 2062638 411 18.7 0.00004 204000 #IGL 0.0020 10000000 411 0.0 0.00004 204800 #Runout #Carbon, %= 0.2 #Manganese, %= 0.58 #Phosphorus, %= 0.01 #Sulfur, %= 0.016 #Silicon, %= 0.21 #Copper, %= 0.16 #Nickel, %= 1.7 #Chromium, %= 0.15 #Molybdenum, %= 0.26 #Vanadium, %= 0.00 # #