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Iteration Number Index

35 I I
SAE
Grade
Process Iter Fat.Str.@ N=106
(MPa)
YS
(MPa)
UTS
(MPa)
%RA %ELong. BHN  
1541 Normalized, 1650 01 260.0 471.2 783.2 55.1 38.7 187
1541 Normalized, 1650 01-b 260.0 471.2 783.2 55.1 38.7 187
1541 Cold sized 02 311.7 461.0 905.5 41.7 28.7 195
1050M Normalized, 1650 03 254.5 449.6 821.0 49.6 43.0 201
1050M Hot Forged-Cold Extruded-Surface Induction Hardened-Core-Specimens From Axles 04 360.2 460.0 828.5 34.1 17.7 229
1050M Hot Forged-Cold Extruded-Surface Induc.Hard.-CaseFrom Axles 05 796.1 2100.0 2360.0 14.7 16.7 536
1090 Normalized 1650 06 307.1 728.8 1090.0 14.0 9.0 259
1090M Hot Formed-Accelerated Cooled 07 404.1 1065.0 1388.0 25.0 14.0 357
1090 Hot Formed-Quenched + Tempered 08 346.8 677.6 1147.0 21.7 6.7 309
1090M Hot Formed-Accelerated Cooled 09 338.3 751.3 1251.3 13.6 6.7 279
1090 Hot Formed and Austempered 10 376.0 759.5 1124.0 37.6 18.0 272
1141AL Normalized, 1650 11 286.0 457.4 770.6 57.0 40.0 223
1141AL Quenched + Tempered 12 432.0 814.2 924.8 59.0 32.0 277
1141Nb Normalized 1650 13 276.6 417.8 695.2 53.0 35.0 199
1141Nb Quenched and Tempered 14 341.8 602.1 801.8 54.0 32.0 241
1141V Normalized 1650 15 287.0 449.9 725.2 49.0 32.0 217
1141V Quenched and Tempered 16 332.2 609.7 796.8 58.0 34.0 252
1141V Normalized 1750 17 295.8 493.5 789.4 47.0 30.0 229
1038 Normalized 1650 18 222.6 330.7 582.2 54.0 44.0 163
1038 Cold Sized 19 240.8 359.4 651.6 53.0 38.0 185
1038 Quench and Tempered 20 317.6 559.8 743.0 69.0 43.0 245
10V45 Normalized 1650 21 270.4 465.2 764.6 48.0 26.0 212
10V45 Reheat 2250F, Deformed @2000F, Forced AirCooled 22 374.3 605.6 908.6 42.0 24.0 269
1020 Cold Drawn 23 194.3 294.9 502.2 63.5 49.7 135
10B21 Quenched and Tempered 24 536.9 1062.3 1104.8 70.5 33.4 322
1022 LP Anneal 25 230.6 457.3 604.1 68.7 48.2 195
1045 Quenched and Tempered 26 278.5 509.6 746.6 62.0 35.5 222
1151V HotFormed, Control Cooled- Tested As-HotRolled 27 266.9 452.3 760.8 50.6 26.3 205
15V24 Hot Formed, Control Cooled Specimens From Control Arm 28 379.2 645.7 877.6 61.1 36.0 243
4130 AL Quenched and Tempered 29 527.6 1284.5 1482.8 44.3 28.0 442
4140 Quenched and Tempered 30 437.4 928.9 1042.9 61.3 30.8 325
5140 Quenched and Tempered 31 496.8 956.7 1039.2 52.7 28.3 305
5150 Normalized 1650 32 294.5 471.8 867.1 55.8 32.4 245
51B60 Quenched and Tempered 33 771.0 1830.0 1970.0 21.6 36.2 450
9254V Quenched and Tempered 34 710.2 1870.0 2050.0 35.1 16.2 536
9254 AL FG Quenched and Tempered 35 844.9 2270. 2450. 4.0 3.9 627
1070 Induction Hardened Simulated Core 36 339.3 520.0 659.0 36.2 25.1 280
1070 Induction Hardened Simulated Case 37 533.3 1950.0 2069.0 2.3 3.3 682
8620 Thru Carburized Simulated Case 38 458.0 920.0 1202.0 1.0 1.0 583
8620 Quenched and Tempered Simulated Carburized Core 39 508.3 1420.0 1683.0 36.2 47.7 420
8695 Lab. Melted Simulated Carburized Case w/o IGO 40 400.6 780.0 1496.0 1.3 1.3 682
8695 Lab Melted Simulated Carburized Case W/IGO 41 508.9 847.0 979.0 1.0 1.0 653
8620 Carburized Gear Teeth
Bending fatigue. R=0.1
42
C-70 Controlled Cooled 43 340.2 765.0 964.0 16.8 14.3 241
9254 AL Quenched and Tempered Torsion Tested (for Axial Props.see Iter.35 ) 44 pdf
15B35 Quenched and Tempered Simulated Carburized Core 45 467.8 866.4 939.9 64.5 37.3 285
15B35 Thru Carburized Simulated Case Testing Terminated 46
4620 Quenched and Tempered Simulated Carburized Core 47 368.5 687.5 997.8 58.2 34.0 277
4620 Thru Carburized Simulated Case 48 763.9 1316.6 2226.9 4.0 12.5 614
4320 Quenched and Tempered Simulated Carburized Core 49 547.1 920.0 994.0 63.0 43.0 201
4320 Thru Carburized Simulated Case 50 819.2 1250.0 2.2 2.1 600
1117 Quenched and Tempered Simulated Carburized Core 51 386.5 655.0 777.0 55.0 37.0 193
1117 Thru Carburized Simulated Case 52 360.8 880.0 0.5 0.5 625
4620 Quenched and Tempered Simulated Carburized Core 53 453.5 891.5 963.7 61.9 43.0 285
4620 Thru Carburized Simulated Case 54 737.6 1169.1 1775.6 1.4 7.7 682
5120 Quenched and Tempered Simulated Carburized Core 55 471.8 780.0 1008.0 58.0 46.0 252
5120 Thru Carburized Simulated Case 56 664.0 1161.1 1403.0 2.7 1.2 682
9310 Quenched and Tempered Simulated Carburized Core 57 479.4 804.0 902.0 70.8 31.0 259
9310 Thru Carburized Simulated Case 58 650.1 1024.2 1635.7 2.9 1.9 682
8822 Quenched and Tempered Simulated Carburized Core 59 442.1 918.0 1131.0 56.0 40.0 252
8822 Thru Carburized Simulated Case 60 650.9 1970.0 1.1 1.1 625
1050 Quenched and Tempered Torsion Tested, HRc=30 61 pdf 286
8620 Carburized Case/Core Composite, Surf 57 HRC, Eff Case 0.024", Core 47 HRC. 62 805.7 1356.6 1764.1 13.9 6.0 601
4320 Carburized Case/Core Composite, Surf 52 HRC, Eff Case 0.011", Core 45 HRC. 63 774.5 1344.5 1705.3 55.5 32.0 514
4140 Quenched and Tempered 64 602.5 1297.0 1390.0 48.3 18.5 380
4140 Quenched and Tempered 65 607.5 1305.6 1400.5 48.2 22.0 375
4140 Quenched and Tempered 66 626.3 1330.0 1537.0 42.1 19.7 388
4140 Quenched and Tempered 67 697.3 1314.0 1445.8 52.1 27.3 380
4140 Quenched and Tempered 68 679.0 1255.1 1355.1 38.8 24.2 352
4140 Quenched and Tempered 69 730.4 1341.0 1474.2 52.5 28.2 375
8620 Carburized Case/Core Composite, Surf 59 HRC, Eff Case 0.022", Core 45 HRC. 70 731.1 1401.7 1677.2 14.2 10.7 614
8620 Thru Carburized Simulated Case 71 796.1 1125.3 1868.7 0.7 1.7 653
41B17M (PS19) Quenched and Tempered Simulated Carburized Core (Atmosphere) 72 465.5 826.9 872.3 68.0 38.8 277
41B17M (PS19) Thru Carburized Simulated Carburized Case (Atmosphere) 73 235.4 1275.0 1275.0 1.0 1.0 665
86B20 Quenched and Tempered Simulated Carburized Core (Atmosphere) 74 498.6 989.0 1034.1 63.7 29.7 336
86B20 Thru Carburized Simulated Carburized Case (Atmosphere) 75 535.6 1114.9 1309.4 0.3 1.5 710
4140 Low Sulfur, Billet Forged to Test Block, Normalized, Quenched and Tempered, Transverse Tested 76 587.7 1669.2 1924.3 15.7 8.5 477
4140 High Sulfur, Billet Forged to Test Block, Normalized, Quenched and Tempered, Transverse Tested 77 308.7 1602.0 1679.9 1.5 3.0 477
41B17M (PS19) Quenched and Tempered Simulated Carburized Core (Vacuum) 78 480.5 863.1 904.0 64.7 42.0 285
41B17M (PS19) Thru Carburized Simulated Carburized Case (Vacuum) 79 475.2 1727.8 1876.8 5.5 2.0 653
4140 Low Sulfur, Billet Forged to Test Block, Normalized, Quenched and Tempered, Transverse Tested 80 554.8 1290.7 1380.4 23.6 23.0 394
4140 High Sulfur, Billet Forged to Test Block, Normalized, Quenched and Tempered, Transverse Tested 81 429.0 1263.2 1299.3 1.3 1.5 395
86B20 Quenched and Tempered Simulated Carburized Core (Vacuum) 82 494.8 1198.0 1502.0 59.7 59.5 401
86B20 Thru Carburized Simulated Carburized Case (Vacuum) 83 444.4 1349.6 1349.6 0.7 0.8 670
5160H Quenched and Tempered 84 736.9 1604.2 1761.2 30.2 13.9 477
6150 Quenched and Tempered 85 406.6 1878.2 2342.8 0.0 0.0 653
9254 Quenched and Tempered 86 664.6 1841.0 2020.0 51.0 8.0 514
8620 Through Carburized Simulated Case Quenched and Tempered 100% Martensite 0% Bainite 87 543.9 1252.0 1485.0 0.0 1.2 673
8620 Through Carburized Simulated Case Isothermally Transformed to 75% Martensite 25% Bainite 88 758.4 1206.0 1390.0 0.0 1.0 745
8620 Through Carburized Simulated Case Isothermally Transformed to 50% Martensite 50% Bainite 89 565.6 1114.0 1497.0 0.0 1.3 682
8620 Through Carburized Simulated Case Isothermally Transformed to 25% Martensite 75% Bainite 90 570.0 1314.0 1883.0 0.0 2.2 614
15V41 As-Hot Rolled Controlled Cooled 91 431.9 665.5 1070.7 32.6 21.9 263
1552 Thru Induction Hardened Simulated Case 92 257.3 933.0 0.0 0.5 627
4140 Induction Thru Hardened 93 552.4 1363.0 1514.0 48.0 19.0 352
1552 As Rolled Simulated Induction Hardened Core 94 387.2 420.0 964.0 45.0 15.0 248
8620 Through Carburized Simulated Case Isothermally Transformed to 100% Bainite 95 614.6 1566.0 1785.0 39.0 15.0 470
4140 Mill Induction Hardened (Low Sulfur) 96 601.9 1157.5 1247.8 47.5 24.5 409
4140 Mill Induction Hardened (High Sulfur) 97 575.2 1167.1 1239.5 47.2 24.7 417
4140 Ultra-Low Sulfur, Billet Forged to Test Block, Normalized, Quenched and Tempered, Transverse Tested 98 637.8 1622.2 1818.3 42.6 18.7 477
4140 Ultra-Low Sulfur, Billet Forged to Test Block, Normalized, Quenched and Tempered, Transverse Tested 99 574.2 1261.0 1332.7 44.0 30.8 375
SAE
Grade
Phase VII
Effect of Composition Range
and Atmosphere vs Vacuum Carburiztion
on 8822 Fatigue Properties
Iter Fat.Str.@ N=106
(MPa)
YS
(MPa)
UTS
(MPa)
%RA %ELong. BHN  
8822 Low Side Chem. Quench+Temper Simulated Carburized Core (Atmosphere) 100 511 884 946 67.2 36.8 297
8822 Low Side Chem. Thru Carburized Simulated Carburized Case (Atmosphere) 101 524 1082 1082 0 0.57 615
8822 Low Side Chem. Quench+Temper Simulated Carburized Core (Vacuum) 102 549 990 1335 46.9 23.8 301
8822 Low Side Chem. Quench+Temper Simulated Carburized Core (Atmosphere). POL 104 884 946 67.2 36.8 297
8822 Low Side Chem. Thru Carburized Simulated Carburized Case (Atmosphere). POL 105 1082 1082 0 0.57 615
8822 Low Side Chem. Quench+Temper Simulated Carburized Core (Vacuum). POL 106 990.0 1334.7 46.9 23.8 301
8822 High Side Chem. Quench+Temper Simulated Carburized Core (Atmosphere) 108 609 1135 1215 59.4 55.0 363
8822 High Side Chem. Thru Carburized Simulated Carburized Case (Atmosphere) 109 1480 0.9 555
8822 High Side Chem. Quench+Temper Simulated Carburized Core (Vacuum) 110 535 1528 1723 50.0 13.0 375
8822 High Side Chem. Quench+Temper Simulated Carburized Core (Atmosphere). POL 112 1135 1215 59.4 55.0 363
8822 High Side Chem. Thru Carburized Simulated Carburized Case (Atmosphere). POL 113 1480 0.9 555
8822 High Side Chem. Quench+Temper Simulated Carburized Core (Vacuum). POL 114 1528 1723 50.0 13.0 375
SAE
Grade
Phase VIII part 1
Effect of Sulfur on Transverse
Periodic Overload Fatigue
Properties of SAE4140
Iter Fat.Str.@ N=106
(MPa)
YS
(MPa)
UTS
(MPa)
%RA %ELong. BHN  
4140 Ultra-Low Sulfur(.004), Billet Forged to Test Block, Normalized, Quenched and Tempered, Transverse Tested, Overload Testing. See Report 116, 117 + 118 for Overload Fatigue Data 116 1261.0 1332.7 44.0 30.8 375
4140 Low Sulfur(.012) Billet Forged to Test Block, Normalized, Quenched and Tempered, Transverse Tested. Overload Testing. See Report 116, 117 + 118 For Overload Fatigue Data 117 1290.7 1380.4 23.6 23.0 394
4140 High Sulfur(.077), Billet Forged to Test Block, Normalized, Quenched and Tempered, Transverse Tested. Overload Testing. See Report 116, 117 + 118 For Overload Fatigue Data 118 1263.2 1299.3 1.3 1.5 395
SAE
Grade
Phase VIII part 2
Effect of Microstructure and
Hardness on Carburized Core
Fatigue Properties of
8620 4320 9310 20MnCr5
Iter Fat.Str.@ N=106
(MPa)
YS
(MPa)
UTS
(MPa)
%RA %ELong. BHN  
8620 Quenched and Tempered Simulated Carburized Core. Section Controlled Cooled 119 380.4 693.5 991.0 54.0 32.4 326
8620 Quenched and Tempered Simulated Carburized Core. Section Controlled Cooled 120 430.2 795.8 1145.2 50.8 35.5 352
8620 Quenched and Tempered Simulated Carburized Core, Section Controlled Cooled 121 528.2 989.5 1310.8 52.0 26.9 382
4320 Quenched and Tempered Simulated Carburized Core. Section Controlled Cooled 122 392 621 905 59.2 11.0 277
4320 Quenched and Tempered Simulated Carburized Core. Section Controlled Cooled. 123 466 745 1010 57.0 11.3 285
4320 Quenched and Tempered Simulated Carburized Core. Section Controlled Cooled. 124 677 867 1238 55.2 11.0 363
9310 Quenched and Tempered Simulated Carburized Core. Section Controlled Cooled. 125 450.0 666.0 883.0 61.4 13.2 277
9310 Quenched and Tempered Simulated Carburized Core. Section Controlled Cooled. 126 531.5 850.0 1085.0 57.5 9.9 331
9310 Quenched and Tempered Simulated Carburized Core. Section Controlled Cooled. 127 533.2 990.0 1201.0 56.5 8.8 352
20MnCr5 Quenched and Tempered Simulated Carburized Core. Section Controlled Cooled 128 399.3 695.0 960.0 50.7 13.8 265
20MnCr5 Quenched and Tempered Simulated Carburized Core. Section Controlled Cooled 129 489.0 852.0 1053.0 56.5 11.3 302
20MnCr5 Quenched and Tempered Simulated Carburized Core. Section Controlled Cooled. 130 606.8 1071.0 1337.0 52.0 10.4 388
SAE
Grade
Phase IX part 2
Comprare As-Rolled with Forged
Fatigue Properties of
1538MV
Iter Fat.Str.@ N=106
(MPa)
YS
(MPa)
UTS
(MPa)
%RA %ELong. BHN  
1538MV As-Hot Rolled Bar 131 439.1 650.3 973.4 28.3 24.9 285
1538MV As-Hot Rolled Bar. Overload Testing. 132 650.3 973.4 28.3 24.9 285
1538MV Forged Crankshafts. Specimens From 5 Crankshafts from 5 Heats of Steel. 133 382.3 627.9 943.2 36.4 26.7 277
1538MV Forged Crankshafts. Specimens From 5 Crankshafts from 5 Heats of Steel. Overload Testing. 134 627.9 943.2 36.4 26.7 277
SAE
Grade
Phase IX part 3
Effect of Carburizing Practice
on Fatigue Properties of
20MoCr4
Iter Fat.Str.@ N=106
(MPa)
YS
(MPa)
UTS
(MPa)
%RA %ELong. BHN  
20MoCr4 Quenched and Tempered Simulated Carburized Core (Atmosphere) 135 478 837 987 51.0 26.0 327
20MoCr4 Quenched and Tempered Simulated Carburized Core (Atmosphere). Overload Testing. See Report 135 + 136 For Overload Fatigue Data 136 837 987 51.0 26.0 327
20MoCr4 Thru Carburized Simulated Carburized Case (Atmosphere) 137 461 1265 1394 0.0 0.0 627
20MoCr4 Thru Carburized Simulated Carburized Case (Atmosphere). Overload Testing. See Report 137 + 138 For Overload Fatigue Data. 138 1265 1394 0.0 0.0 627
20MoCr4 Quenched and Tempered Simulated Carburized Core (Vacuum) 139 434 870 1288 51.6 34.1 326
20MoCr4 Quenched and Tempered Simulated Carburized Core (Vacuum). Overload Testing. See Report 139 +140 For Overload Fatigue Data. 140 870 1288 51.6 34.1 326
20MoCr4 Thru Carburized Simulated Carburized Case (Vacuum) 141 465 965 0.0 3.2 653
20MoCr4 Thru Carburized Simulated Carburized Case (Vacuum). Overload Testing. See Report 141 + 142 For Overload Fatigue Data. 142 965 0.0 3.3 653
SAE
Grade
Phase X
Effect of Microstructure and Hardness
on Carburized Core Overload Fatigue
Properties of 8620 , 4320 , 9310 , 20MnCr5
(Compare with Phase VIII )
Iter Fat.Str.@ N=106
(MPa)
YS
(MPa)
UTS
(MPa)
%RA %ELong. BHN  
8620 Quenched and Tempered Simulated Carburized Core. Section Controlled Cooled. Overload Testing. See Report 119 + 143 For Overload Fatigue Data 143 693.5 991.0 54.0 32.4 236
8620 Quenched and Tempered Simulated Carburized Core. Section Controlled Cooled. Overload Testing. See Report 120 + 144 For Overload Fatigue Data 144 795.8 1145.2 50.8 35.5 352
8620 Quenched and Tempered Simulated Carburized Core. Section Controlled Cooled. Overload Testing. See Report 121 + 145 For Overload Fatigue Data. 145 989.5 1310.8 52.0 26.9 381
4320 Quenched and Tempered Simulated Carburized Core. Section Controlled Cooled. Overload Testing. See Report 122 + 146 For Overload Fatigue Data 146 620.5 905.0 59.2 11.0 277
4320 Quenched and Tempered Simulated Carburized Core. Section Controlled Cooled. Overload Testing. See Report 123 + 147 For Overload Fatigue Data 147 745.0 1010.0 57.0 11.3 288
4320 Quenched and Tempered Simulated Carburized Core. Section Controlled Cooled. Overload Testing. See Report 124 + 148 For Overload Fatigue Data 148 148 867.0 1238.0 55.2 11.0 363
9310 Quencheds and Tempered Simulated Carburized Core. Section Controlled Cooled. Overload Testing. See Report 125 + 149 For Overload Fatigue Data 149 666.0 883.0 61.4 13.2 277
9310 Quenched and Tempered Simulated Carburized Core. Section Controlled Cooled. Overload Testing. See Report 126 + 150 For Overload Fatigue Data 150 850.0 1085.0 57.5 9.9 331
9310 Quenched and Tempered Simulated Carburized Core. Section Controlled Cooled. Overload Testing. See Report 127 + 151 For Overload Fatigue Data 151 990.0 1201.0 56.5 8.8 352
20MnCr5 Quenched and Tempered Simulated Carburized Core. Section Controlled Cooled. Overload Testing. See Report 128 + 152 For Overload Fatigue Data 152 695.0 960.0 50.7 13.8 265
20MnCr5 Quenched and Tempered Simulated Carburized Core. Section Controlled Cooled. Overload Testing. See Report 129 + 153 For Overload Fatigue Data 153 852.0 1053.0 56.5 11.3 302
20MnCr5 Quenched and Tempered Simulated Carburized Core. Section Controlled Cooled. Overload Testing. See Report 130 + 154 For Overload Fatigue Data 154 1071.0 1337.0 52.0 10.4 388
SAE
Grade
Phase XI
Compare Bending and Axial Fatigue of
Carburized Case+Core Specimens with
Controlled Low Core Hardness
8615
Iter Fat.Str.@ N=106
(MPa)
YS
(MPa)
UTS
(MPa)
%RA %ELong. BHN  
8615 Quenched and Tempered Simulated Carburized Core (Atmosphere) 155 451.5 753.2 1011.0 61.5 36.5 225
8615 Quenched and Tempered Simulated Carburized Core (Atmosphere). Four-Point Bend Testing. 156 285
8615 Carburized Case/Core Composite (Atmosphere). Shallow CD 157 636.4 921.4 1154.2 8.5 8.1 653
8615 Carburized Case/Core Composite (Atmosphere). Shallow CD. Overload Testing. See Report 157 + 158 For Overload Fatigue Data. 158 921.4 1154.2 8.5 8.1 653
8615 Carburized Case/Core Composite (Atmosphere). Shallow CD. Four-Point Bend Testing 159 653
8615 Carburized Case/Core Composite (Atmosphere). Shallow CD. Four-Point Bend Testing. Overload Testing. See Report 159 + 160 For Overload Fatigue Data 160 653
8615 Carburized Case/Core Composite (Atmosphere). Deep CD 161 720.8 1017.0 1182.4 2.5 2.8 673
8615 Carburized Case/Core Composite. (Atmosphere). Deep CD. Overload Testing. See Report 161+162 For Overload Fatigue Data. 162 1017.0 1182.4 2.5 2.8 673
8615 Carburized Case/Core Composite (Atmosphere). Deep CD. Four-Point Bend Testing 163 673
8615 Carburized Case/Core Composite (Atmosphere). Deep CD. Four-Point Bend Testing. Overload Testing. See Report 163 + 164 For Overload Fatigue Data. 164 673
SAE
Grade
Phase XII
Effect of Alloy Content (Ni) on
Carburized Case Fatigue Properties
8620 , 4320 , 9310 , 20MnCr5
Iter Fat.Str.@ N=106
(MPa)
YS
(MPa)
UTS
(MPa)
%RA %ELong. BHN  
8620 Thru Carburized Simulated Carburized Case (Vacuum) 165 239.4 690.0 757.0 0.2 0.5 688
8620 Thru Carburized Simulated Carburized Case (Vacuum). Overload Testing. See Report 165 + 166 For Overload Fatigue Data. 166 690.0 757.0 0.2 0.5 688
4320 Thru Carburized Simulated Carburized Case (Vacuum) 167 264.5 783.0 0.3 0.6 653
9310 Thru Carburized Simulated Carburized Case (Vacuum) 168 341.0 764.0 1019.0 0.4 0.9 653
9310 Thru Carburized Simulated Carburised Case (Vacuum). Overload Testing. See Report 168 + 169 For Overload Fatigue Data. 169 764.0 1019.0 0.4 0.9 653
20MnCr5 Thru Carburized Simulated Carburized Case (Vacuum) 170 219.6 684.0 0.2 0.5 653
SAE
Grade
Phase XIII
Rotating Bending Fatigue Properties
of Carburizing and Forged Steels
8620 , 4320 , 20MnCr5 , 9310 , 1538MV
Iter Fat.Str.@ N=106
(MPa)
YS
(MPa)
UTS
(MPa)
%RA %ELong. BHN  
8620 8620 Carburized Steel, Case and Core, Rotating Bending Fatigue See Pictures of Microstructure Tab for Data) 171 682
20MnCr5 20MnCr5 Carburized Case and Core, Rotating Bending Fatigue (See Pictures of Microstructure Tab for Data) 173 682
SAE
Grade
Phase XIV
Comparison of Bending and Axial
Fatigue Properties of Carburized
Shallow vs Deep Case - 9310
Iter Fat.Str.@ N=106
(MPa)
YS
(MPa)
UTS
(MPa)
%RA %ELong. BHN  
9310 Target was Carburized Core, Axial Speci. Actually a Case-Core Composite due to a HeatTreat problem. Plan to Re-do 176 1095 1468 4.78 7.2
9310 Simulated Carburized Core, 4 Point Bending Fatigue, See Report in Documents Section for Data/Details 177 348
9310 Carburized Case/Core Composite, Shallow Case Depth, 4 Point Bending Fatigue, See Report in Documents Section for Data/Details 180 653
9310 Caurburized Case/Core Composite, Shallow Case Depth, 4 Point Bending Fatigue with Overload, See Report in Documents Section for Data/Details. 181 653
9310 Carburized Case/Core Composite, Deep Case Depth, 4 Point Bending Fatigue, See Report in Documents Section for Data/Details 184 653
9310 Carburized Case/Core Composite, Deep Case Depth, 4 Point Bending with Overload, See Report in Documents Section for Data/Details 185 653
SAE
Grade
Phase XV
Compare Bending and Axial Fatigue
Properties of Carburized Specimens
Shallow vs Deep Case
16MnCr5
Iter Fat.Str.@ N=106
(MPa)
YS
(MPa)
UTS
(MPa)
%RA %ELong. BHN  
16MnCr5 Quenched and Tempered Simulated Carburized Core, Axial Testing 186 556.0 1040.1 1397.9 32.0 26.4 415
16MnCr5 Quenched and Tempered Simulated Carburized Core. Four Point Bend Testing 187 380
16MnCr5 Carburized Case/Core Composite (Atmosphere). Shallow CD. Four-Point Bend Testing 190
16MnCr5 Carburized Case/Core Composite. (Atmosphere). Shallow CD. Four-Point Bend Testing. Overload Testing. See Report 190 + 191 For Overload Fatigue Data 191
16MnCr5 Carburized Case/Core Composite (Atmosphere). Deep CD. Four-Point Bend Testing. 194
16MnCr5 Carburized Case/Core Composite (Atmosphere). Deep CD. Four-Point Bend Testing. Overload Testing. See Report 194 + 195 For Overload Fatigue Data. 195
SAE
Grade
Phase XVI
Fatigue Properties of Modified Steels
Carburized at High Temperature
( Compare 1700F vs 1900F Carb.)
16MnCr5(Mod) , 4120(Mod)
Iter Fat.Str.@ N=106
(MPa)
YS
(MPa)
UTS
(MPa)
%RA %ELong. BHN  
16MnCr5(Mod) Simulate Carburized Core 1900F Carb. Axial 196
16MnCr5(Mod) Simulate Carburized Core 1900F Carb. 4pt Bending 197
4120(Mod) Simulate Carburized Core 1900F Carb. Axial 198
4120(Mod) Simulate Carburized Core 1900F Carb. 4pt Bending 199
16MnCr5(Mod) At DANA, Thru Carb.(1900F) Case, Axial 200>
16MnCr5(Mod) Case+Core Composite, 1900F Carb. 4pt Bending 201
16MnCr5 Not Modified !
Case+Core Composite, 1900F Carb. 4pt Bending
(Check for Grain Growth)
201A
4120(Mod) At DANA, Thru Carb.(1900F) Case, Axial 202
4120(Mod) Lost Shipment by Fedex 203
16MnCr5(Mod) Simulated Carburized Core, 1700F Carb., Axial 204 1050.0 1370.0 48.1 22.4
16MnCr5(Mod) Simulated Carburized Core, 1700F Carb., 4pt Bending 205
4120(Mod) Simulated Carburized Core, 1700F Carb., Axial 206
4120(Mod) Simulated Carburized Core, 1700F Carb. 4pt Bending 207
16MnCr5(Mod) At DANA, Thru Carburized 1700F Simul. Case, Axial 208
16MnCr5(Mod) Case+Core Composite, 1700F Carb. 4pt Bending 209
4120(Mod) At DANA, Thru Carburized 1700F Simul. Case., Axial 210
4120(Mod) Case+Core Composite, 1700F Carb. 4pt Bending 211
SAE
Grade
Phase XVII
Elevated Temperature Fatigue Properties
8620
Iter Fat.Str.@ N=106
(MPa)
YS
(MPa)
UTS
(MPa)
%RA %ELong. BHN  
4120(Mod) Spring Steel Sheet
Quenched + Temper(177C)
227
1074 Spring Steel Sheet
Austempered
228
SAE
Grade
Phase XIX
Effect of Carbon Content and Grain Size
on Fatigue Properties of Steels
8640 , 8655 , 8670 , 8685 , 86100
Iter Fat.Str.@ N=106
(MPa)
YS
(MPa)
UTS
(MPa)
%RA %ELong. BHN  
8640 Vacuum Melt, Quench+Temper 234
8640 Vacuum Melt 927C 12 hrs,
Quench+Temper
235
8655 Vacuum Melt, Quench+Temper 236
8655 Vacuum Melt 927C 12 hrs,
Quench+Temper
237
8670 Vacuum Melt, Quench+Temper 238
8670 Vacuum Melt 927C 12 hrs,
Quench+Temper
239
8685 Vacuum Melt, Quench+Temper 240
8685 Vacuum Melt 927C 12 hrs,
Quench+Temper
241
86100 Vacuum Melt, Quench+Temper 242
86100 Vacuum Melt 927C 12 hrs,
Quench+Temper
243