Temperature T , in °C factor A factor B , in MPa 40 0.00001 1.05 40 0.000197 21 40 0.001 27.9 40 0.01 41.4 40 0.0165 45.2 40 0.1 45.2 205 0.00001 0.979 205 0.000201 20.1 205 0.001 26.8 205 0.01 40.8 205 0.0184 45.2 205 0.1 45.2 315 0.00001 0.979 315 0.000201 20.1 315 0.001 26.8 315 0.01 40.8 315 0.0184 45.2 315 0.1 45.2 425 0.00001 0.91 425 0.000187 17.4 425 0.001 23.2 425 0.01 34.3 425 0.03 41.6 425 0.1 41.6 540 0.00001 0.862 540 0.000162 14.1 540 0.001 19.8 540 0.01 30.6 540 0.03 37.7 540 0.1 37.7