# AISI 20MnCr5 steel ThruCarburized Simul.Carbur.Case HRc= 60 # 100% Matensite, 13.6% Retained Aust. # 0.6wt% Carbon on Surface, 0.40% at 0.17inch depth (Not really thru Carb.) # See R.Cryderman report 05-26-2017SEM-Analy167_168_170Cryderman.pdf # Constant Ampl. Tests, axial specimens # Avg Austenite Grain size 16.0 # Original Chem. Gerdau H-M53903: 0.18C 1.20Mn .01P .030S .21Si .21Cu # .16Ni 1.11Cr .04Mo .002V .002Co .034Al .00Ca .0007B .008Sn 8ppmOxyg. 97ppmN # # Gerdau H-M53903 Elec Furn. VacDegas LadleRefined, ConCast 152x152mm Billet # Axial spec. from 46.4mm bar # Tested by D.Baia UWaterloo 2015 #FileType= strain_life #DataType= raw #Name= SAE20MnCr5 #Name= AISI-It-170 #Stress_units= mpa #Strain_units= strain #Sy= 684 mpa Is also the ultimate and fracture poit #Su= 684.0 #E= 200000 #RA= 0.16 #TrueFractureStrain= 0.005 #TrueFractureStress= 684 #monotonic_K= 2881.0 #monotonic_n= 0.219 #FailureDef= 50% load drop #BHN= 653 #from Rockwell C= 60 #TotStrAmpl 2Nf, StsAmpl So PlasStrAmpl ElasticModulus 0.003320 116 667 0.0 0.000000 200000 #None 0.003630 230 729 0.0 0.000000 200000 #None 0.003650 332 733 0.0 0.000000 200000 #None 0.002860 1206 574 0.0 0.000044 200000 #None 0.002880 1818 579 0.0 0.000019 200000 #None 0.002350 3130 473 0.0 0.000000 200000 #None 0.002950 7542 592 0.0 0.000000 200000 #None 0.002630 8796 528 0.0 0.000000 200000 #None 0.002040 9838 410 0.0 0.000060 200000 #None 0.001980 51134 398 0.0 0.000020 200000 #None 0.001480 60444 297 0.0 0.000022 200000 #None 0.001990 186946 399 0.0 0.000015 200000 #None 0.001500 310726 302 0.0 0.000000 200000 #None 0.001520 463282 306 0.0 0.000000 200000 #None 0.001000 522292 202 0.0 0.000000 200000 #None 0.001190 783816 239 0.0 0.000011 200000 #None 0.001190 892076 239 0.0 0.000011 200000 #None 0.001200 2924664 242 0.0 0.000000 200000 #None 0.000700 10000000 141 0.0 0.000000 200000 #Runout 0.001000 10000000 202 0.0 0.000000 200000 #Runout 0.001000 10000000 200 0.0 0.000050 200000 #Runout 0.000920 10000000 185 0.0 0.000000 200000 #Runout # #