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MMPDS-01 31 January 2003 Figure 2.3.1.4.8(c). Best-fit S/N curves for notched, K t = 3.0, 300M alloy forging, F tu = 280 ksi, longitudinal and transverse directions. Correlative Information for Figure 2.3.1.4.8(c) Product Forms: Forged billet, unspecified size, CEVM Die forging, 10 x 20 inches, CEVM Die forging, 6.50 x 20 inches, CEVM Properties: TUS, ksi TYS, ksi Temp., EF 290-292 242-247 RT (unnotched) 435 — RT (notched) Specimen Details: Notched 60E V-Groove, K t = 3.0 0.500 inch gross diameter 0.250 inch net diameter 0.0145 inch root radius, r 60E flank angle, ω Surface Condition: Heat treat and finish grind notch to RMS 63 or better; stress relieve Test Parameters: Loading - Axial Frequency - Temperature - RT Atmosphere - Air No. of Heats/Lots: 5 Equivalent Stress Equation: Log N f = 10.40-3.41 log (S eq -20.0) S eq = S max (1-R) 0.51 Std. Error of Estimate, Log (Life) = 18.3 (1/S eq ) Standard Deviation, Log (Life) = 2.100 R 2 = 97.4 Sample Size = 99 [Caution: The equivalent stress model may provide unrealistic life predictions for stress ratios beyond those represented above.] References: 2.3.1.4.8(a), (b), (c) 2-62
MMPDS-01 31 January 2003 Figure 2.3.1.4.8(d). Best-fit S/N curves for notched, K t = 5.0, 300M alloy forged billet, F tu = 280 ksi, longitudinal direction. Correlative Information for Figure 2.3.1.4.8(d) Product Forms: Forged billet, unspecified size, CEVM Properties: TUS, ksi TYS, ksi Temp., EF 290 242 RT (unnotched) 379 — RT (notched) Specimen Details: Notched, 60E V-Groove, K t =5.0 0.500 inch gross diameter 0.250 inch net diameter 0.0042 inch root radius, r 60E flank angle, ω Surface Condition: Heat treat and finish grind notch to RMS 63 maximum; stress relieve Reference: 2.3.1.4.8(b) Test Parameters: Loading - Axial Frequency - Temperature - RT Atmosphere - Air No. of Heat/Lots: 2 Equivalent Stress Equation: Log N f = 9.61-3.04 log (S eq -10.0) S eq = S max (1-R) 0.52 Std. Error of Estimate, Log (Life) = 0.28 Standard Deviation, Log (Life) = 0.81 R 2 = 88% Sample Size = 48 [Caution: The equivalent stress model may provide unrealistic life predictions for stress ratios beyond those represented above.] 2-63
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MMPDS-01 31 January 2003 CHAPTER 2
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MMPDS-01 31 January 2003 and above
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MMPDS-01 31 January 2003 2.1.2.1.4
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MMPDS-01 31 January 2003 2.2.0.3 En
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MMPDS-01 31 January 2003 9 α, - Be
Page 11 and 12: MMPDS-01 31 January 2003 Heat Treat
Page 13 and 14: MMPDS-01 31 January 2003 Figure 2.3
Page 15 and 16: MMPDS-01 31 January 2003 2.3.1 SPEC
Page 17 and 18: MMPDS-01 31 January 2003 Table 2.3.
Page 27 and 28: MMPDS-01 31 January 2003 200 180 St
Page 29 and 30: MMPDS-01 31 January 2003 120 110 E
Page 37 and 38: . . MMPDS-01 31 January 2003 140 12
Page 39 and 40: MMPDS-01 31 January 2003 200 200-ks
Page 43 and 44: MMPDS-01 31 January 2003 300 B = 2
Page 59 and 60: . . MMPDS-01 31 January 2003 Maximu
Page 61: MMPDS-01 31 January 2003 Figure 2.3
Page 71 and 72: MMPDS-01 31 January 2003 100 Streng
Page 73 and 74: . MMPDS-01 31 January 2003 100 80 P
Page 77 and 78: MMPDS-01 31 January 2003 100 80 F s
Page 79 and 80: MMPDS-01 31 January 2003 2.4.3 9Ni-
Page 81 and 82: MMPDS-01 31 January 2003 9 8 α - B
Page 83 and 84: MMPDS-01 31 January 2003 6WUHQJWK
Page 85 and 86: MMPDS-01 31 January 2003 200 180 Mo
Page 87 and 88: MMPDS-01 31 January 2003 /RQJLWXGL
Page 89 and 90: MMPDS-01 31 January 2003 6KRUW WUD
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