# NOTE!! Rotating Bending Tests !! # 15-5PH StainlessSteel H-1050 R= -1 !! Shot Peened !! # H-1050 percip. hardened 4hrs at 1050F HRc= 37 # Spec. from round 0.50inch bar stock from Armco, and # machined 0.020" oversized, then hardened and finish machined. # 15-5PH shotpeened gauge section arc height .010A2 # Shot peened samples failed .002" to .006" below surface. # Chem.: 15.5Cr% 4.6Ni 3.5Cu .039C .22Mn .02P .008S # Chem.: .33Cb .02Ta # 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_H1050 #Name= Peened_Stainless #Stress_units= mpa #Strain_units= strain #Sy= 1137 mpa 165 ksi longitudinal #Su= 1172 mpa 170 ksi #E= 200000 assumed #%Elongation= 15 over 2" long., tranvese= 12. #%RA= 56. longit., transv.= 42 #BHN= 390 Before peening #TotStrain 2Nf Stress Mean PlasStr ## Amp Amp Stress Amp Elastic Mod 0.00483 76000 965 0 0 200000 0.00465 244000 931 0 0 200000 0.00448 294000 896 0 0 200000 0.00448 336000 896 0 0 200000 0.00424 1198000 848 0 0 200000 0.00414 1088000 827 0 0 200000 0.00379 13762000 758 0 0 200000 0.00379 17944000 758 0 0 200000 0.00379 18712000 758 0 0 200000 0.00362 15282000 724 0 0 200000 0.00345 20092000 690 0 0 200000 #runout