Viscosity is a measure of a fluid’s resistance to flow. It approximates the thickness or internal friction of a fluid. In simpler terms, it describes how easily a fluid flows. Higher viscosity fluids are thicker and flow more slowly, while lower viscosity fluids are thinner and flow more easily.
The concept of viscosity is commonly used in various fields such as fluid dynamics, engineering, physics, and chemistry to characterize and understand the behavior of fluids. It plays a crucial role in determining the performance of lubricants, paints, polymers, and many other materials. Additionally, viscosity is a key parameter in fluid flow calculations and simulations.
Kinematic viscosity | Seconds | Seconds | Seconds | Degrees | Degrees | Kinematic | ||
---|---|---|---|---|---|---|---|---|
Seconds | Saybolt | Redwood 1 | Redwood 2 | Engler | Barbey | centistokes | ||
Saybolt | Furol | Standard | Admiralty | |||||
Universal | SSF | |||||||
SSU | Centistokes | ft2/sec | ||||||
31 | 1 | 0.00001076 | — | 29 | — | 1 | 6200 | 1 |
31.5 | 1.13 | 0.00001216 | — | 29.4 | — | 1.01 | 5486 | 1.13 |
32 | 1.81 | 0.00001948 | — | 29.8 | — | 1.08 | 3425 | 1.81 |
32.6 | 2 | 0.00002153 | — | 30.2 | — | 1.1 | 3100 | 2 |
33 | 2.11 | 0.00002271 | — | 30.6 | — | 1.11 | 2938 | 2.11 |
34 | 2.4 | 0.00002583 | — | 31.3 | — | 1.14 | 2583 | 2.4 |
35 | 2.71 | 0.00002917 | — | 32.1 | — | 1.17 | 2287 | 2.71 |
36 | 3 | 0.00003229 | — | 32.9 | — | 1.2 | 2066 | 3 |
38 | 3.64 | 0.00003918 | — | 33.7 | — | 1.26 | 1703 | 3.64 |
39.2 | 4 | 0.00004306 | — | 35.5 | — | 1.3 | 1550 | 4 |
40 | 4.25 | 0.00004575 | — | 36.2 | 5.1 | 1.32 | 1459 | 4.25 |
42 | 4.88 | 0.00005253 | — | 38.2 | 5.25 | 1.36 | 1270 | 4.88 |
42.4 | 5 | 0.00005382 | — | 38.6 | 5.28 | 1.37 | 1240 | 5 |
44 | 8.5 | 0.0000592 | — | 40.6 | 5.39 | 1.4 | 1127 | 5.5 |
45.6 | 6 | 0.00006458 | — | 41.8 | 5.51 | 1.43 | 1033 | 6 |
46 | 6.13 | 0.00006598 | — | 42.3 | 5.54 | 1.44 | 1011 | 6.13 |
46.8 | 7 | 0.00007535 | — | 43.1 | 5.6 | 1.48 | 885 | 7 |
50 | 7.36 | 0.00007922 | — | 44.3 | 5.83 | 1.58 | 842 | 7.36 |
52.1 | 8 | 0.00008611 | — | 46 | 6.03 | 1.64 | 775 | 8 |
55 | 8.88 | 0.00009558 | — | 48.3 | 6.3 | 1.73 | 698 | 8.88 |
55.4 | 9 | 0.00009688 | — | 48.6 | 6.34 | 1.74 | 689 | 9 |
58.8 | 10 | 0.0001076 | — | 51.3 | 6.66 | 1.83 | 620 | 10 |
60 | 10.32 | 0.0001111 | — | 52.3 | 6.77 | 1.87 | 601 | 10.32 |
65 | 11.72 | 0.0001262 | — | 56.7 | 7.19 | 2.01 | 529 | 11.72 |
70 | 13.08 | 0.0001408 | — | 60.9 | 7.6 | 2.16 | 474 | 13.08 |
75 | 14.38 | 0.0001548 | — | 65.1 | 8.02 | 2.37 | 431 | 14.38 |
80 | 15.66 | 0.0001686 | — | 69.2 | 8.44 | 2.45 | 396 | 15.66 |
85 | 16.9 | 0.0001819 | — | 73.4 | 8.87 | 2.59 | 367 | 16.9 |
90 | 18.12 | 0.000195 | — | 77.6 | 9.3 | 2.73 | 342 | 18.12 |
95 | 19.32 | 0.000208 | — | 81.6 | 9.71 | 2.88 | 321 | 19.32 |
100 | 20.52 | 0.0002209 | — | 85.6 | 10.12 | 3.02 | 302 | 20.52 |
120 | 25.15 | 0.0002707 | — | 102 | 11.88 | 3.57 | 246 | 25.15 |
140 | 29.65 | 0.0003191 | — | 119 | 13.63 | 4.11 | 209 | 29.65 |
160 | 34.1 | 0.000367 | — | 136 | 15.39 | 4.64 | 182 | 34.1 |
180 | 38.52 | 0.0004146 | — | 153 | 17.14 | 5.12 | 161 | 38.52 |
200 | 42.95 | 0.0004623 | — | 170 | 18.9 | 5.92 | 144 | 42.95 |
300 | 64.6 | 0.0006953 | 32.7 | 253 | 28 | 8.79 | 96 | 64.6 |
400 | 86.2 | 0.0009275 | 42.4 | 338 | 37.1 | 11.7 | 71.9 | 86.2 |
500 | 108 | 0.001163 | 52.3 | 423 | 46.2 | 14.6 | 57.4 | 108 |
600 | 129.4 | 0.001393 | 62 | 507 | 55.3 | 17.5 | 47.9 | 129.4 |
700 | 151 | 0.001625 | 72 | 592 | 64.6 | 20.44 | 41 | 151 |
800 | 172.6 | 0.001858 | 82 | 677 | 73.8 | 23.36 | 35.9 | 172.6 |
900 | 194.2 | 0.00209 | 92.1 | 762 | 83 | 26.28 | 31.9 | 194.2 |
1000 | 215.8 | 0.002323 | 102.1 | 846 | 92.3 | 29.2 | 28.7 | 215.8 |
1200 | 259 | 0.002788 | 122 | 1016 | 111 | 35.1 | 23.9 | 259 |
1400 | 302.3 | 0.003254 | 143 | 1185 | 129 | 40.9 | 20.5 | 302.3 |
1600 | 345.3 | 0.003717 | 163 | 1354 | 148 | 46.7 | 18 | 345.3 |
1800 | 388.5 | 0.004182 | 183 | 1524 | 166 | 52.6 | 15.6 | 388.5 |
2000 | 431.7 | 0.004647 | 204 | 1693 | 185 | 58.4 | 14.4 | 431.7 |
2500 | 539.4 | 0.005806 | 254 | 2115 | 231 | 73 | 11.5 | 539.4 |
3000 | 647.3 | 0.006967 | 305 | 2538 | 277 | 87.6 | 9.6 | 647.3 |
3500 | 755.2 | 0.008129 | 356 | 2961 | 323 | 102 | 8.21 | 755.2 |
4000 | 863.1 | 0.00929 | 408 | 3385 | 369 | 117 | 7.18 | 863.1 |
4500 | 970.9 | 0.01045 | 458 | 3807 | 415 | 131 | 6.39 | 970.9 |
5000 | 1078.8 | 0.01161 | 509 | 4230 | 461 | 146 | 5.75 | 1078.8 |
6000 | 1294.6 | 0.01393 | 610 | 5077 | 553 | 175 | 4.78 | 1294.6 |
7000 | 1510.3 | 0.01626 | 712 | 5922 | 646 | 204 | 4.11 | 1510.3 |
8000 | 1726.1 | 0.01858 | 814 | 6769 | 728 | 234 | 3.59 | 1726.1 |
9000 | 1941.9 | 0.02092 | 916 | 7615 | 830 | 263 | 3.19 | 1941.9 |
"10,000" | 2157.6 | 0.02322 | 1018 | 8461 | 922 | 292 | 2.87 | 2157.6 |
"15,000" | 3236.5 | 0.03483 | 1526 | 12692 | — | 438 | 1.92 | 3236.5 |
"20,000" | 4315.3 | 0.04645 | 2035 | 16923 | — | 584 | 1.44 | 4315.3 |