# # SAE10B21 Q+T Bhn=305, AISI It024 HRc=32.4 # USS/Kobe BasicOxygen, ConCast(250x325mm), HotRolled to 24mm bar, # Austenized 1575F Quenched in Brine, Temp. 750F 100%Martensite # Typically used for fasteners. # Inclusions: TypeA=3.Thin, TypeB,C,D=0 # Chem.: .98Mn .007P .007S .25Si .03Cu .03Ni .07Cr .02Mo # .03Al .027Ti 0Ca .0018B 42ppm_N # Test: UoToledo F.Yin, A.Fatemi 2000 #FileType= strain_life #DataType= raw #Name= SAE10B21 #Name= AisiIt_24 #Stress_units= mpa #Strain_units= strain #Sy= 1062.3 #Su= 1104.8 #eu= 0.038 engr. strain at Su #E= 214700 (avg. of 17) reported=212000 #monotonic_K= 1247.7 #monotonic_n= 0.027 #LowerYield= 1039.9 #UpperYield= 1054.7 #FractureStrain= 1.22 #FractureStress= 1573. #%RA= 70.5 #%Elongation= 33.4 over 0.3inch gauge #MaterialForm= bar #FailureDef= 50% load drop #BHN= 305. reported=321.8 #Hardness, Rockwell C= 32.4 #StrAmp 2Nf StsAmp So CalcPlasStr InitialModulus 0.0199 504 901 -11.2 0.01566 216000 #IGL 0.0196 504 871 -12.3 0.01551 212000 #IGL 0.0201 534 898 -15.3 0.01588 201000 #IGL 0.0100 2242 794 -3.3 0.00623 216000 #IGL 0.0100 2362 801 -11.4 0.00623 203000 #IGL 0.0100 2382 798 -13.1 0.00622 200000 #IGL 0.0060 5430 741 -8.0 0.00249 202000 #IGL 0.0060 6744 734 -2.3 0.00254 215000 #IGL 0.0060 8168 729 -7.1 0.00256 210000 #IGL 0.0035 37404 682 76.3 0.00028 202000 #IGL 0.0035 56906 694 21.2 0.00023 209000 #IGL 0.0035 60976 701 74.4 0.00019 214000 #IGL 0.0030 78880 634 295.1 0.00002 208000 #IGL 0.0030 119834 641 237.8 0.00000 200000 #IGL 0.0030 130000 626 1.4 0.00003 215000 #IGL 0.0000 3652918 530 0.0 0.00000 214700 #IGL 0.0000 5789186 525 0.0 0.00000 214700 #IGL 0.0025 6963664 527 81.4 0.00002 215000 #IGL #Carbon, %= 0.21 #Manganese, %= 0.98 #Phosphorus, %= 0.007 #Sulfur, %= 0.007 #Silicon, %= 0.25 #Copper, %= 0.03 #Nickel, %= 0.03 #Chromium, %= 0.07 #Molybdenum, %= 0.02 #Aluminum, %= 0.030 #Titanium, %= 0.027 #Calcium, %= 0.00 #Boron, %= 0.0018 #Nitrogen, ppm= 42 # #