Friction Coefficient from Tilt Angle
µ from the angle at which an object starts to slide — the incline test.
A protractor IS a tribometer: rubber/concrete slips near 40° (µ≈0.85), steel/steel oily at 6° (0.1). Bulk solids use the same math as 'angle of repose' for hopper design.
Formula
Friction Coefficient from Tilt Angle is a free coefficient of friction for design engineers, metallurgists and QA inspectors — instant, accurate and 100% client-side, with the governing formula and reference shown next to the result so the number can be defended, not just quoted.
About Friction Coefficient from Tilt Angle
µ from the angle at which an object starts to slide — the incline test. The calculation implements µ = tan θ_slip (Coulomb friction; ASTM G115). A protractor IS a tribometer: rubber/concrete slips near 40° (µ≈0.85), steel/steel oily at 6° (0.1). Bulk solids use the same math as 'angle of repose' for hopper design.
How to use Friction Coefficient from Tilt Angle
- 1Enter Slip angle from horizontal in deg.
- 2Read Static friction coefficient µ instantly — no submit button needed.
Why use Friction Coefficient from Tilt Angle?
- ✓Implements the standard formula — µ = tan θ_slip
- ✓Reference cited on-page: Coulomb friction; ASTM G115
- ✓Live worked example: the substitution recomputes from your numbers
- ✓Runs entirely in your browser — nothing uploaded, free forever
Frequently asked questions
What formula does the Friction Coefficient from Tilt Angle use?+
It computes µ = tan θ_slip, per Coulomb friction; ASTM G115. The formula is displayed under the result along with a worked example substituted with your own inputs.
What should I keep in mind when using this calculator?+
A protractor IS a tribometer: rubber/concrete slips near 40° (µ≈0.85), steel/steel oily at 6° (0.1). Bulk solids use the same math as 'angle of repose' for hopper design.
Where do the material property defaults come from?+
Defaults are standard handbook values (ASM, manufacturer datasheets, the cited standard). Always substitute certified values from your material's test certificate for critical work.
Is the Friction Coefficient from Tilt Angle free to use?+
Yes — completely free, no sign-up, no limits. It runs client-side in your browser, so inputs stay private and results are instant even on slow connections.
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