Temperature T , in °C factor A factor B , in MPa 40 0.0000101 0.345 40 0.00009 3.21 40 0.0005 4.83 40 0.0007 5.18 40 0.0015 6.07 40 0.004 7.24 40 0.007 7.93 40 0.01 8.27 40 0.015 8.48 40 0.02 8.62 40 0.1 8.62 150 0.0000112 0.345 150 0.0000885 2.86 150 0.0004 4.1 150 0.0007 4.37 150 0.0015 4.99 150 0.003 5.5 150 0.006 5.94 150 0.01 6.25 150 0.1 6.25 205 0.0000119 0.345 205 0.0000749 2.25 205 0.0015 4.16 205 0.003 4.69 205 0.005 4.96 205 0.007 5.07 205 0.009 5.14 205 0.1 5.14