#Copyright (C) 2015 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 # # SAE950X 8mm and 10mm thick plates + QStE380 (SAE950XLK) 3mm sheet # See individual files for details: # Ref.1: P.Watson and T.H.Topper, "An Evaluation of the Fatigue Performance # of Automotive Steels," SAE Paper 710597, Montreal Que., Jun.7-11 1971 # Ref.2: P.Dindinger report to Fat.Des.+Eval. Comm. 1995 # Ref.3: L.DePrada, et al, "Fatigue Behaviour of High Strength Steel Sheets # Used in Automotive Industry," Fatigue 2007. # Data digitized from graphs and may contain errors. # #FileType= strain_life #DataType= raw #TIMEcol= 0 #NAME= SAE950X #NAME= HSLA-345 #NAME= QStE380 (possiby not a 950X) #NAME= Steel #Stress_units= mpa #Strain_units= strain #Sy= 432 ave. of 345. (50ksi) 437.(63) 516. (74) #Su= 496 ave. of 441. 485. 562 #eu= 0.14 (engineering strain at Su from Watson) #E= 203000 ave. of204220. 204700 200100 #FractureStrain= 1.01 ave. of 1.06 1.16 #FractureStress= 751. #monotonic_K= 0 not reported #monotonic_n= 0 not reported #BHN= 140. 170. #%RA= 65. % 68.5 ##----------merged file 1 ------------------------------------------------- ## SAE 950X HSLA-345 machined from 5/16inch plate channels. ## Some specimens were initially overstrained 10 cycles +-1.0% strain ## (as tabulated below) ## Ref.: P.Watson and T.H.Topper, "An Evaluation of the Fatigue Performance ## of Automotive Steels," SAE Paper 710597, Montreal Que., Jun.7-11 1971 ## Data digitized from graphs and may contain errors. ## Due to plasticity at long life, the traditional fit has a problem. ##FileType= strain_life ##DataType= raw ##TIMEcol= 0 ##NAME= SAE950X ##NAME= HSLA-345 ##NAME= Steel ##Stress_units= mpa ## 170 ##Strain_units= strain ##Sy= 345. 0.2pc offset = 50 ksi ##Su= 441. ##eu= 0.14 (engineerin strain at Su ) ##E= 204220. mpa =29640 ksi ##FractureStrain= 1.06 ##FractureStress= 751. ##monotonic_K= 0 not reported ##monotonic_n= 0 not reported ##BHN= 140. ##%RA= 65. % ##StrAmpl 2Nf StsAmpl So PlasStrAmpl IniMod NeuberStressAmpl 0.01022 1029 369.83 0 0.00841 204220 879 0.00505 4346 321.85 0 0.00347 204220 576 0.00249 34192 280.94 0 0.00112 204220 378 0.00199 161890 236.63 0 0.00083 204220 310 0.00169 439163 226.77 0 0.00058 204220 280 0.00161 873401 213.91 0 0.00056 204220 265 0.00142 5026490 210.81 0 0.00039 204220 248 0.00131 18644450 199.13 0 0.00034 204220 231 #runout #Initially overstrained Points: #( +-1.0% strain for 10 cycles) #0.00296 13590 310.37 0 0.00144 204220 433 #0.00202 33823 254.76 0 0.00077 204220 324 #0.00163 127063 220.87 0 0.00055 204220 271 #0.00133 990656 208.84 0 0.00031 204220 238 #0.00123 2612300 202.25 0 0.00024 204220 225 #0.00114 19364400 173.29 0 0.00029 204220 201 #runout ## ##-----------------merged file 2----------------------------------- ## SAE950X or HSLA 345 Steel ## Axial Specimens cut from 10mm thick hot rolled plate. ## Ref.: P.Dindinger report to Fat.Des.+Eval. Comm. 1995 ## ##FileType= strain_life ##DataType= raw ##TIMEcol= 0 ##NAME= HSLA345X ##Name= SAE950X ##NAME= HotRolledPlate ##NAME= Steel ##Stress_units= mpa ##Strain_units= strain ##Sy= 437. mpa 63.4 ksi 0.2pc offset ##Su= 485 mpa # 69. ksi Not reported, assumed 10% bigger than yield ##eu= 0 #strain at Su not reported ##E= 204700. mpa = 29700. ksi Average of 19 specimens. ##FractureStrain= 0 not reported ##FractureStress= 0. not reported ###monotonic_K= 0 not reported ##monotonic_n= 0 not reported ##BHN= 170. ##%RA= 0. % not reported ##Plastic strains below are = TotStrAmpl - (StsAmpl/IniMod) ##StrAmpl 2Nf StsAmpl So PlasStrAmpl IniMod NeuberStressAmpl 0.01 2922 448.5 0 0.00781 204500 958 0.008 6260 404.1 0 0.00602 204500 813 0.007 7890 403.8 0 0.00503 204500 760 0.006 9742 377.9 0 0.00415 204500 681 0.0055 9194 376.4 0 0.00366 204500 651 0.00525 17198 366.1 0 0.00346 204500 627 0.005 16400 352.6 0 0.00328 204500 600 0.0045 22832 340.8 0 0.00283 204500 560 0.004 32456 327.1 0 0.00240 204500 517 0.0035 36544 319.9 0 0.00197 208500 483 0.00325 56022 314.6 0 0.00171 204500 457 0.003 64078 298.9 0 0.00154 204500 428 0.00275 86608 297.2 0 0.00130 204500 409 0.0025 158706 286.6 0 0.00109 203500 382 0.00225 157630 283.6 0 0.00086 204500 361 0.002 324830 273.1 0 0.00066 204500 334 0.0018 647022 265.5 0 0.00050 204500 313 0.0016 1617534 268 0 0.00029 204500 296 0.0015 5400000 264.1 0 0.00021 204500 285 #runout ## ##-----------------merged file 3----------------------------------- ## QStE380 HSLA-050XLK S355MC steel 3mm HotRolled sheet ## Specimens 10.5mm gauge length, 4mm wide, 3mm thick. ## Ref. L.DePrada, C.Maestro, J.Romo, E.Canibano, J.C.Merino, "Fatigue ## Behaviour of High Strength Steel Sheets Usied in Automotive Industry," ## Fatigue 2007. ## Data points digitzed from graphs and may contain errors. ## ##FileType= strain_life ##DataType= raw ##TIMEcol= 0 ##NAME= QStE380 ##NAME= HSLA-050XLK ##NAME= SteelSheet ##Strain_units= strain ##Stress_units= mpa ##Sy= 516. mpa ##Su= 562. ##eu= 0.0 # Strain at Ultimate not reported ##Elongation 24.5% reported ##E= 200100 mpa ##%RA= 68.51 % ##BHN= 0. not reported ##FractureStrain= 1.16 not reported, compute from %RA ##FractureStress= 0. not reported ##monotonic_K= 0 not reported ##monotonic_n= 0 not reported #TotStrAmpl 2Nf StsAmpl So PlasStrAmpl Init.Modulus NeubEqStsAmp 0.00402 8272 411 0 0.00197 200100 575 0.00405 9751 420 0 0.00195 200100 584 0.00402 10629 426 0 0.00189 200100 585 0.00357 11910 416 0 0.00149 200100 545 0.00357 12632 420 0 0.00147 200100 548 0.00348 15975 377 0 0.00160 200100 512 0.00251 30519 387 0 0.00058 200100 441 0.00304 31343 373 0 0.00117 200100 476 0.00299 35945 342 0 0.00128 200100 452 0.00301 39030 381 0 0.00111 200100 479 0.00251 46760 364 0 0.00069 200100 427 0.00251 51572 350 0 0.00076 200100 419 0.00255 53424 387 0 0.00061 200100 444 0.00231 85152 355 0 0.00054 200100 405 0.00226 94653 326 0 0.00063 200100 384 0.00205 109004 319 0 0.00046 200100 362 0.00224 109908 397 0 0.00025 200100 422 0.00176 110842 321 0 0.00016 200100 336 0.00203 114776 366 0 0.00021 200100 386 0.00227 136760 339 0 0.00058 200100 392 0.00203 143987 343 0 0.00032 200100 374 0.00173 150993 306 0 0.00020 200100 326 0.00178 179384 315 0 0.00020 200100 335 0.00155 443576 310 0 0.00000 200100 310 0.00158 565080 275 0 0.00021 200100 295 0.00180 580795 324 0 0.00018 200100 341 0.00153 979899 307 0 0.00000 200100 307 0.00154 1182520 309 0 0.00000 200100 309 0.00151 1952150 301 0 0.00000 200100 301 # #