Surface Roughness by Production Processes

A machined metal block on top of two brass plates with grooved patterns showing surface roughness.

Surface texture refers to the deviations in surface topography characterized by different properties such as form, waviness, roughness and flaws. While all of these properties impact a product’s performance, surface roughness is the direct result of the material condition and production process used. Surface roughness is a good indicator of how a mechanical product will interact with its environment and its performance.

VARIATIONS IN SURFACE ROUGHNESS BY PRODUCTION PROCESS

There is a wide range in the variations of surface roughness and edge condition depending upon the production process used. Listed below are common manufacturing techniques with their corresponding standard Ra values and the typical Ra value ISO Finishing can achieve following surface finishing.

Surface roughness chart across various processes, categories include Metal Cutting, Abrasive, Casting, Forming, and Other.

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