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Table 2 Cyclic loading stress parameters

From: Study on Cutting Force, Cutting Temperature and Machining Residual Stress in Precision Turning of Pure Iron with Different Grain Sizes

Temperature range Coarse crystal pure iron Fine crystal pure iron
T < 150 °C 0.79 0.78
150 °C < T < 200 °C 0.71 0.72
200 °C < T < 250 °C 0.58 0.61
250 °C < T < 300 °C 0.55 0.57
300 °C < T 350 °C 0.52 0.53
350 °C < T 0.49 0.51