Temperature T , in °C factor A factor B , in MPa 40 0.00001 1.14 40 0.0000874 10 40 0.000748 85.5 40 0.000968 106.9 40 0.0012 117.2 40 0.00165 124.1 40 0.005 137.9 40 0.023 155.1 40 0.1 155.1 150 0.00001 1.02 150 0.000098 10 150 0.0006 61.2 150 0.000728 71.7 150 0.000924 82.7 150 0.00128 93.1 150 0.00322 108.9 150 0.02 136.5 150 0.1 136.5 315 0.00001 0.952 315 0.000105 10 315 0.0006 57.3 315 0.000705 63.7 315 0.00095 73.1 315 0.0013 80 315 0.0046 97.9 315 0.02 113.1 315 0.1 113.1 705 0.00001 0.862 705 0.000116 10 705 0.0006 51.7 705 0.000848 64.8 705 0.0012 73.1 705 0.00288 85.5 705 0.01 98.6 705 0.03 107.6 705 0.1 107.6 870 0.00001 0.765 870 0.000131 10 870 0.0005 38.3 870 0.00075 55.2 870 0.0012 69 870 0.0019 75.2 870 0.003 79.3 870 0.1 79.3 925 0.00001 0.686 925 0.000146 10 925 0.0005 34.3 925 0.000814 55.8 925 0.1 55.8