Home > Term: surface roughness
surface roughness
The roughness of a part's surface resulting from a manufacturing process. Surface roughness is typically measured as the arithmetic average (Ra) or root mean square (RMS) of the surface variations, measured in microinches or micrometers. A typical primary manufacturing process results in an Ra surface roughness of 32-250 microinches and finishing operations can lower the roughness to 1-32 microinches.
- Part of Speech: noun
- Industry/Domain: Manufacturing
- Category: Industrial manufacturing
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- Kevin.Li
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(Los Angeles - CA, United States)