# NOTE!! Rotating Bending Tests !! Shot Peened !! # 15-5PH StainlessSteel H-900 R= -1 # H-900 percip. hardened 1hr at 900F HRc= 46 # Spec. from round 0.50inch bar stock from Armco, and # machined 0.020" oversized then hardened, then finish mach. # then shot peened # Chem.: 15.5Cr% 4.6Ni 3.5Cu .039C .22Mn .02P .008S .33Cb .02Ta # 15-5PH shotpeened gauge section arc height .010A2 # Shot peened samples failed .002" to .006" below surface. # Ref.: Boeing Co., "Fatigue Properties of 17-4PH and 15-5PH # Ref.: Steel in the H-900 and H-1050 Condition", Aug. 1968 # Ref.: Web document AD0691794.pdf # Rotating Bending R.R.Moore 0.25inch diam samples. #FileType= strain_life #DataType= raw #TIMEcol= 0 #NAME= 15-5PH_H900 #Name= PeenedStainless #Stress_units= mpa #Strain_units= strain #!! Prior to peening: #Sy= 1207 mpa 175 ksi long.= transv. #Su= 1310 mpa 190. ksi long.= transv. #E= 200000 assumed #%Elongation= 14 over 2" long., transv= 11. #%RA= 54. long., transv.= 35 #BHN= 432 #TotStrain 2Nf Stress Mean PlasStrain ## Amp Amp Stress Amp Elastic Mod 0.00517 364000 1034 0 0 200000 0.00500 642000 1000 0 0 200000 0.00483 1038000 965 0 0 200000 0.00483 1290000 965 0 0 200000 0.00483 1824000 965 0 0 200000 0.00465 5084000 931 0 0 200000 0.00448 7582000 896 0 0 200000 0.00431 7192000 862 0 0 200000 0.00431 7204000 862 0 0 200000 0.00431 8750000 862 0 0 200000 0.00414 10364000 827 0 0 200000 0.00396 14336000 793 0 0 200000 # #