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Table 3 Parameters of S–N curves of the material A357-T6 and cast aluminum beam

From: Fatigue Characterization on a Cast Aluminum Beam of a High-Speed Train Through Numerical Simulation and Experiments

Parameter Material S–N curve Structural S–N curve
N ≤ 5×106 > 5 × 106 ≤ 5 × 106 > 5 × 106
m 7.353 13.706 7.353 13.706
C 1.26 × 1021 3.51 × 1033 1.71 × 1018 1.58 × 1028