Temperature T , in °C factor A factor B , in MPa 40 0.0000143 1.38 40 0.0006 57.9 40 0.007 91.7 40 0.01 96.5 40 0.02 105 40 0.05 112 40 0.1 112 150 0.0000153 1.38 150 0.000475 43.1 150 0.005 68.6 150 0.006 70.3 150 0.01 75.8 150 0.0458 86.9 150 0.1 86.9 205 0.0000154 1.38 205 0.00041 37.1 205 0.007 61.7 205 0.01 64.8 205 0.0429 73.1 205 0.1 73.1 315 0.0000169 1.38 315 0.000363 30.2 315 0.005 49.6 315 0.01 54.5 315 0.0456 62.1 315 0.1 62.1 425 0.0000176 1.38 425 0.000317 25 425 0.005 41 425 0.01 45.5 425 0.0468 53.1 425 0.1 53.1