Sample data from Engineering Database — 375 reference tables, deterministic calculators, and Engineering AI. Sign up free
Friction Coefficients: Steel
Hard carbon clean to Steel (zinc-plated) none added fastener threads
Static and kinetic friction coefficients between material pairs under various surface conditions
| material 1 | material 2 condition | material 2 | mu static max (dimensionless) | mu static min (dimensionless) | surface condition |
|---|---|---|---|---|---|
| Steel | Hard carbon clean | Hard carbon | 0.14 | 0.14 | clean |
| Steel | Hard carbon lubricated | Hard carbon | 0.14 | 0.11 | lubricated |
| Steel | In film on Ag ASM unlubricated | In film on Ag | 0.1 | 0.1 | Unlubricated, room temperature, ambient air |
| Steel | In film on steel ASM unlubricated | In film on steel | 0.08 | 0.08 | Unlubricated, room temperature, ambient air |
| Steel | Pb film on Cu ASM unlubricated | Pb film on Cu | 0.18 | 0.18 | Unlubricated, room temperature, ambient air |
| Steel | Polythene clean | Polythene | 0.2 | 0.2 | Clean and Dry |
| Steel | Polythene lubricated | Polythene | 0.2 | 0.2 | Lubricated |
| Steel | Sintered bronze lubricated | Sintered bronze | 0.13 | 0.13 | lubricated |
| Steel | Steel (cadmium-plated) none added fastener threads | Steel (cadmium-plated) | 0.12 | 0.12 | none added fastener threads |
| Steel | Steel (zinc-plated) none added fastener threads | Steel (zinc-plated) | 0.17 | 0.17 | none added fastener threads |
What else is in Engineering Database
Iron Engine ↗Engineering AI at ironengine.ai
AI built for engineering. Searches the engineering database, performs calculations, gives source-backed engineering insights.
Get started for free ↗Reference Data375 engineering tablesMaterial properties, pipe and shape dimensions, code tables, and electrical ratings across mechanical, civil, chemical, electrical, materials, and manufacturing engineering.
Browse dataCalculatorsDeterministic engineering calculatorsSizing, checking, and conversion tools that run against the reference tables. Inputs are code-compliant, outputs are traceable to the source standard.
Browse calculators