#Copyright (C) 2012 F.D.E. Committee #This data file is free software - you can redistribute it and/or #modify it under the terms of the GNU General Public License as #published by the Free Software Foundation; either version 2 of the #license, or (at your option) any later version. #This data file is distributed in the hope that it will be useful, #but WITHOUT ANY WARRANTY - without even the implied warranty of #MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the #GNU General PUblic License for more details. #You should have received a copy of the GNU General PUblic License #along with this program - if not, write to the Free Software #Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA #Try also their web site: http://www.gnu.org/copyleft/gpl.html # # SAE1028/SAE1030 Steel. from 3/4inch rod. # Outside and Core metallurgy differ. Outside is SAE1020, # Core is approx. SAE1028 to SAE1030. Specim. test section mostly core # Core hardness Rb= 73. Chem: 0.28C wt% 0.50Mn .008Ph .010S .010Si .006Al # .04Cr .03Ni # Ref.: J. Martin, "Cyclic Stress-Strain Behavior and Fatigue Resistance of # Two Structural Steels," Frac. Control Program, FCP rep. 9, Oct. 1973. # Material cyclically softens at strain amplitudes below 0.0033, and hardens # cyclically above. # #FileType= strain_life #DataType= raw #TIMEcol= 0 #NAME= SAE1028 #NAME= SAE1030 #NAME= Steel #Stress_units= mpa #Strain_units= strain #Sy= 290. 0.2pc offset, 42 ksi #Su= 451. mpa 66 ksi #eu= 0.17 #strain at Ultimate Su #E= 206900 mpa = 30000 ksi #FractureStrain= 0.90 #FractureStress= 883 map, 128ksi, 111ksi(Bridgeman) #monotonic_K= 0 See report #monotonic_n= 0 See report #BHN= 421. Rb=73 #%RA= 59. % #StrAmpl 2Nf StsAmpl So PlasStrAmpl IniMod NeuberStressAmpl 0.01531 489 382 0 0.01359 206900 1100 0.01036 1864 370 0 0.00862 206900 890 0.00787 2589 348 0 0.00603 206900 753 0.00515 5509 315 0 0.00363 206900 579 0.00335 33985 280 0 0.00198 206900 441 0.00233 139560 231 0 0.00124 206900 334 0.00175 326549 189 0 0.00085 206900 262 0.00161 581453 182 0 0.00072 206900 246 0.00126 1517330 156 0 0.00048 206900 202 # #