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Basic Components & Elements of Surface Topography

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Corresponding<br />

Parameters in<br />

Parameters Defined in ASME B46.1-2002 ISO 4287-1997<br />

R a Arithmetic Average Deviation <strong>of</strong> the Assessed Pr<strong>of</strong>ile R a<br />

R q Root Mean Square Deviation <strong>of</strong> the Assessed Pr<strong>of</strong>ile R q<br />

R p Maximum Pr<strong>of</strong>ile Peak Height R p<br />

R v Maximum Pr<strong>of</strong>ile Valley Depth R v<br />

R t Maximum Height <strong>of</strong> the Pr<strong>of</strong>ile R t<br />

R pm Average Maximum Pr<strong>of</strong>ile Peak Height ----<br />

R z Average Maximum Height <strong>of</strong> the Pr<strong>of</strong>ile R y<br />

R max Maximum Roughness Depth ----<br />

S m Mean Spacing <strong>of</strong> Pr<strong>of</strong>ile Irregularities R sm<br />

P c Peak Density ----<br />

800-875-4243

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