# Note ! : Periodic Overstrain Tests ! # SAE8822 Simulated Carb. Core, Low side Chem. Quenched+Tempered # Axial samples, constant ampl. tests. # Simulated Carburized Core (Atmosphere) Martensite= 100% HRc=31.5 # Original ElecFurn. VacDegas LadleRef ConCast 20.6mm HotRolled Bar # Chem." 0.21C .81Mn .02P .026S .26Si .18Cu .46Ni .50Cr # .25Mo .005V .002Colum .031Al .01Sn 15ppm_O # Tested U.Toledo, 2009 #FileType= strain_life #DataType= raw #Name= SAE8822lowSide #Name= AISIit_104POL #Name= Simul.Core #Stress_units= MPa #Strain_units= strain #Sy= 883.5 #Su= 945.7 #E= 210200 average initial loading. Reported=211600 #monotonic_K= 1073.5 #monotonic_n= 0.025 #LowerYield= 883.5 #UpperYield= 903.6 #MaterialForm= bar #FailureDef= 50% load drop #TrueFractureStrain= 1.11 #TrueFractureStress= 1170 #%RA= 67.2 #Hardness, Brinell= 297 #BHN= 297 #Hardness, Rockwell C= 31.5 #StrAmpl 2Nf Sts So PlsStr iniEmod 0.020000 524 793 -8.1 0.016230 207000 #IGL 0.019880 530 787 -6.1 0.016250 214000 #IGL 0.019880 580 800 -8.2 0.016090 214000 #IGL 0.009970 2344 706 -6.4 0.006630 206000 #IGL 0.009970 2418 718 -5.6 0.006600 203000 #IGL 0.009990 2598 712 -5.3 0.006220 214000 #IGL 0.006000 6244 664 -3.4 0.002850 210000 #IGL 0.005980 7536 654 -4.4 0.002890 208000 #IGL 0.005960 8216 650 -3.2 0.002890 208000 #IGL 0.004000 28364 615 2.6 0.001090 211000 #IGL 0.003990 33094 613 -9.2 0.001090 212000 #IGL 0.004000 40130 619 -15.0 0.001080 208000 #IGL #0.003000 78074 641 0.0 0.000000 209000 #IGL #0.002960 80962 643 0.0 0.000000 212000 #IGL #0.003000 99388 641 0.0 0.000000 211600 #IGL #0.003040 104976 641 0.0 0.000000 214000 #IGL #0.002750 419144 579 0.0 0.000000 211600 #IGL #0.002750 7763276 581 0.0 0.000000 211600 #IGL #0.002500 10000000 533 0.0 0.000000 211600 #Runout #0.002750 10000000 582 0.0 0.000000 211600 #Runout #Above are Constant Amplitude tests #( A "#" in 1st column makes line a comment) #Below are Periodic Overstrain tests 0.00275 87430 513 105 0.00024 210200 0.00250 65030 473 178 0.00014 210200 0.00225 176614 434 177 0 210200 0.00200 183494 390 240 0 210200 0.00175 311972 343 285 0 210200 0.00150 423716 292 356 0 210200 0.00150 429904 294 375 0 210200 0.00125 990730 245 383 0 210200 0.00100 1608786 195 497 0 210200 0.00100 2010082 196 453 0 210200 0.00100 2489360 201 433 0 210200 0.00075 16408716 142 454 0 210200 # #