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Coefficients Of Friction (Static)
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Design Resources
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Material |
Against Material |
Dry Contact |
Lubricated Contact |
|
Aluminum |
Aluminum |
1.35 |
.30 |
| Aluminum |
Steel |
.45 |
|
| Brake (Composite) |
Cast Iron |
.40 |
|
| Brass |
Steel |
.35 |
.19 |
| Brick |
Wood |
.60 |
|
| Bronze |
Steel |
|
.16 |
| Cadmium |
Cadmium |
.50 |
.05 |
| Cast Iron |
Steel |
.40 |
.21 |
| Chromium |
Chromium |
.41 |
.34 |
| Copper |
Copper |
1.00 |
.08 |
| Copper-Lead Alloy |
Steel |
.22 |
|
| Diamond |
Diamond |
.10 |
.05 - .10 |
| Diamond |
Metal |
.10 - .15 |
.10 |
| Glass |
Glass |
.90 - 1.0 |
.10 - .60 |
| Glass |
Metal |
.50 - .70 |
.20 - .30 |
| Graphite |
Graphite |
.10 |
.10 |
| Iron |
Iron |
1.0 |
.15 -. .20 |
| Leather |
Wood |
.30 - .40 |
|
| Leather |
Metal |
.60 |
|
| Magnesium |
Magnesium |
.60 |
.079 |
| Nickel |
Nickel |
.70 |
.28 |
| Nylon |
.15 - .25 |
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| Phosphor Bronze |
Steel |
.35 |
|
| Platinum |
Platinum |
1.20 |
.25 |
| Plexiglas |
Plexiglas |
.80 |
.80 |
| Plexiglas |
Steel |
.40 - .50 |
.40 - .50 |
| Polystyrene |
Polystyrene |
.50 |
.50 |
| Polystyrene |
Steel |
.30 - .35 |
.30 - .35 |
| Silver |
Silver |
1.40 |
.55 |
| Steel |
Steel |
.80 |
.16 |
| Teflon |
Steel |
.04 |
.04 |
| Teflon |
Teflon |
.04 |
.04 |
| Tungsten Carbide |
Steel |
.40 - .60 |
.10 - .20 |
| Tungsten Carbide |
Tungsten Carbide |
.20 - .25 |
.12 |
| Wood |
Wood |
.25 - .50 |
.20 |
| Wood |
Metals |
.20 - .60 |
.20 |
| Zinc |
Zinc |
.60 |
.04 |
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