# # Fitted Curve. Original data has no long-life values. Beware. # AISI 4142 ALLOY, Q+T AT 400F Longitudinal to rolling dir # LANDGRAF, T+AM 320, 1968, BHN 560 # saedigcurve_v2.2.f starts. # Copyright (C) 2000 R.W. Landgraf # 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 MERCHANTA- # BILITY 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 # #NAME= SAE4142 #NAME= AlloySteel #Fn= 85 #FileType= strain_life #DataType= fitted #TIMEcol= 0 #Stress_units= ksi #Strain_units= strain #Su= 324.80 #Sy= 244.80 #E= 29979. #%RA= 27.0 #BHN= 560. #NO. FAT. PTS.= 6 # SAE4142 AlloySteel BHN= 560 Fn= 85 # Monotonic Props. Cyclic Props. #ELAS. MOD.= 29979. KSI, 207. GPA K' = 730.5 KSI, 5037.MPA #YIELD,0.2%= 245. KSI, 1688. MPA N' = 0.1496 #ULT. STRG.= 325. KSI, 2239. MPA F. STRG COEF= 494.0 KSI, 3406.MPA #K = 0.0 KSI, 0. MPA F.STRG EXP, b=-0.1205 #N = 0.0000 FAT DUCT COEF= 0.0732 #RED. IN AREA = 27.0 F.DUCT EXP, c=-0.8052 #T. FRAC. STG.= 0.0 KSI, 0. MPA Exp Cyc Yld = 288. Ksi,1987.MPA #T. FRAC. STR.= 0.000 Fit Cyc Yld = 274. Ksi,1889.MPA #No. fatigue data points= 6 # # NOTE!! The Following Points are <b>FITTED DATA:</b>#NOTE!! Fitted Stress computed using Experm. K' and n' # NOTE!! No long life data available in original data. # Lots of extrapolation in this file. Try inserting a fatigue limit. #Stress_Units= KSI # Total Strain 2Nf Stress Mean Plastic Strain Initial # Amp Amp Stress Amp Elastic Mod. 0.08972 1 432.8 0. 0.07528 29979. #Fitted_point 0.05707 2 404.0 0. 0.04360 29979. #Fitted_point 0.03362 5 369.2 0. 0.02130 29979. #Fitted_point 0.02396 10 345.0 0. 0.01245 29979. #Fitted_point 0.01805 20 322.5 0. 0.00729 29979. #Fitted_point 0.01343 50 294.9 0. 0.00359 29979. #Fitted_point 0.01126 100 275.3 0. 0.00208 29979. #Fitted_point 0.00973 200 256.4 0. 0.00118 29979. #Fitted_point 0.00829 500 232.2 0. 0.00054 29979. #Fitted_point 0.00745 1000 214.7 0. 0.00029 29979. #Fitted_point 0.00676 2000 198.0 0. 0.00015 29979. #Fitted_point 0.00598 5000 177.5 0. 0.00006 29979. #Fitted_point 0.00548 10000 163.2 0. 0.00003 29979. #Fitted_point 0.00502 20000 150.1 0. 0.00002 29979. #Fitted_point 0.00449 50000 134.3 0. 0.00001 29979. #Fitted_point 0.00412 100000 123.5 0. 0.00000 29979. #Fitted_point 0.00379 200000 113.6 0. 0.00000 29979. #Fitted_point 0.00339 500000 101.7 0. 0.00000 29979. #Fitted_point 0.00312 1000000 93.5 0. 0.00000 29979. #Fitted_point 0.00287 2000000 86.0 0. 0.00000 29979. #Fitted_point 0.00257 5000000 77.0 0. 0.00000 29979. #Fitted_point 0.00236 10000000 70.9 0. 0.00000 29979. #Fitted_point 0.00217 20000000 65.2 0. 0.00000 29979. #Fitted_point 0.00195 50000000 58.4 0. 0.00000 29979. #Fitted_point 0.00179 100000000 53.7 0. 0.00000 29979. #Fitted_point 0.00165 200000000 49.4 0. 0.00000 29979. #Fitted_point 0.00148 500000000 44.2 0. 0.00000 29979. #Fitted_point 0.00136 1000000000 40.7 0. 0.00000 29979. #Fitted_point #