# AISI 20MnCr5 steel Q+T Simul.Carbur.Core (Section Controlled Cooling) HRc= 32 # Periodic Overload Tests for long life tests, AISI iter 153 # Gerdau Ht.-M28513 Elec Furn. VacDegas LadleRefined, ConCast 152x152mm # HotRolled, Control Cooled 27.9mm bar, Simul. Carburized Core Axial Sample. # Martensite= 100% # Inclusion TypeA 1.5T 0.5H, TypeB 1.0T, 0.5H, TypeC 0T 0H, TypeD 1.0T 0.5H # Original Chem. Gerdau H-M28513: 0.20C 1.22Mn .008P .022S .23Si .18Cu # .09Ni 1.16Cr .05Mo .008V .003Co .029Al .0005Ca .0002B .009Sn 14ppmOxyg. # Tested by M.Yu UWaterloo 2011 #FileType= strain_life #DataType= raw #Name= 20MnCr5_POL #Name= AisiIt.153 #Name= SimulCarbCore #Stress_units= MPa #Strain_units= strain #Sy= 852.0 #Su= 1053.0 #eu= 0.050 engr. strain at Su #E= 194300 #monotonic_K= 1762.0 #monotonic_n= 0.117 #TrueFractureStress= 1991. #TrueFractureStrain= 0.832 avg. of 2 #%RA= 56.5 #FailureDef= 50% load drop #%Elongation= 11.3 over 0.3inch #BHN= 302 #Hardness, Rockwell C= 32 #Note: Chem in Fatigue Report differs from AISI spreadsheet #Assume AISI is correct version #StrAmp 2Nf StsAmp So PlsStrAmp Emod #0.020780 130 948 0.0 0.015900 194300 #0.020780 318 937 0.0 0.015960 194300 #0.029800 380 862 0.0 0.016540 194300 #0.016960 760 847 0.0 0.012600 194300 #0.010400 1700 753 0.0 0.006520 194300 #0.010490 1840 803 0.0 0.006360 194300 #0.010590 2300 815 0.0 0.006400 194300 #Data pts above are constant ampl from iter.129 #Data pts below are periodic overload tests of iter 153 0.00218 325032 423 0 0 194300 0.00203 405548 394 0 0 194300 0.00189 909630 367 0 0 194300 0.00173 867174 336 0 0 194300 0.00158 1411314 308 0 0 194300 0.00144 3504500 280 0 0 194300 0.00132 1817212 257 0 0 194300 0.00119 5365752 232 0 0 194300 0.00112 8564352 218 0 0 194300 0.00104 7501870 203 0 0 194300 # #