Stainless Steel Tube Surface roughness is the measure if the stainlss steel pipe finer surface irregularities in the surface texture. These are the result of the stainless steel tubing manufacturing process employed to create the surface. Surface roughness Ra is rated as the arithmetic average deviation of the surface valleys and peaks expressed in micro inches or micro meters. ISO standards use the term CLA (Center Line Average). Both are interpreted identical.
The ability of a manufacturing operation to produce a specific surface roughness depends on many factors. For example, in end mill cutting, the final surface depends on the rotational speed of the end mill cutter, the velocity of the traverse, the rate of feed, the amount and type of lubrication at the point of cutting, and the mechanical properties of the piece being machined. A small change in any of the above factors can have a significant effect on the surface produced.
SURFACE ROUGHNESS AVERAGE OBTAINABLE BY
COMMON PRODUCTION METHODS
PROCESS |
ROUGHNESS HEIGHT RATING MICROINCHES
2000 1000 500 250 125 63 32 16 8 4 2 1 0.5 |
Flame Cutting |
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Sawing |
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Drilling |
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EDM |
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Milling |
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Broaching |
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Reaming |
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Laser |
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Burnishing |
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Grinding |
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Honing |
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Polishing |
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Extruding |
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Investment Casting |
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Perm Mold Cast |
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Die Casting |
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