Temperature T , in °C factor A factor B , in MPa 20 0.00001 1 20 0.0000102 1 20 0.000526 51.7 20 0.00088 55.8 20 0.00153 61 20 0.00354 69 20 0.00696 75.8 20 0.0122 82.7 20 0.0163 86.2 20 0.1 86.2 95 0.00001 1 95 0.0000104 1 95 0.000495 47.6 95 0.00143 55 95 0.00198 57.4 95 0.00357 62.7 95 0.00528 66 95 0.0115 73.1 95 0.0202 79.3 95 0.1 79.3 260 0.00001 0.9 260 0.0000109 1 260 0.000434 40 260 0.00073 43.8 260 0.00118 47.6 260 0.00346 55.2 260 0.0104 62.2 260 0.0208 66.5 260 0.1 66.5 425 0.00001 0.9 425 0.0000114 1 425 0.000394 34.5 425 0.00133 42.4 425 0.0021 45.2 425 0.00329 47.9 425 0.00643 51.7 425 0.0135 55.5 425 0.0206 57.6 425 0.1 57.6 595 0.00001 0.8 595 0.0000121 1 595 0.000378 31 595 0.000784 34.8 595 0.00164 38.8 595 0.00283 41.5 595 0.00502 44.8 595 0.00991 48.8 595 0.0163 51.7 595 0.1 51.7 760 0.00001 0.8 760 0.0000132 1 760 0.000338 25.5 760 0.000563 27.6 760 0.00124 30.9 760 0.00317 34.6 760 0.00699 37.9 760 0.0192 42.4 760 0.1 42.4 870 0.00001 0.7 870 0.000015 1 870 0.000193 12.9 870 0.000771 15.9 870 0.00128 17.1 870 0.00197 18.1 870 0.00452 20.5 870 0.00812 22.4 870 0.0149 24.5 870 0.1 24.5 900 0.00001 0.7 900 0.0000153 1 900 0.000139 9.1 900 0.0006 11 900 0.00117 12.2 900 0.00246 13.8 900 0.00662 16.5 900 0.00833 17.2 900 0.1 17.2