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Surface Texture Parameters List by Name

Download PDF version of the Surface Texture Parameters Glossary

Parameter Name	Symbol	Category
Angular Power Spectral Density Function	APSDF	Spatial
Areal Material Ratio	Smr(c)	Functional
Autocorrelation Function	ACF	Spatial
Autocorrelation Length	Sal	Spatial
Average Maximum Height of the Surface	Rz	Legacy
Average Maximum Peak Height	Rpm	Legacy
Average Maximum Profile Height Along X, Y	Stylus (X,Y) Rz	2D Stylus
Average Maximum Valley Depth	Rvm	Legacy
Average Roughness	Sa	Height
Average Roughness Along X, Y	Stylus (X,Y) Ra	2D Stylus
Core Material Volume	Vmc(p,q)	Functional
Core Roughness Along X, Y	Stylus (X,Y) Rk	2D Stylus
Core Roughness Depth	Sk	Functional
Core Void Volume	Vvc(p,q)	Functional
Dale Void Volume	Vvv(p)	Functional
Developed Interfacial Area Ratio	Sdr	Hybrid
Inverse Areal Material Ratio	Sdc(mr)	Functional
Kurtosis	Sku	Height
Material Ratio	mr	Functional
Material Volume	Vm(mr)	Functional
Maximum Height of Surface	Sz	Height
Maximum Peak Height	Sp	Height
Maximum Profile Height Along X, Y	Stylus (X,Y) Rt	2D Stylus
Maximum Valley Depth	Sv	Height
Mean Profile Spacing Along X,Y	Stylus (X,Y) Rsm	2D Stylus
Mean Summit Curvature	Ssc	Hybrid
Normalized Surface Volume	NormVolume	Legacy
Peak Density Along X,Y	Stylus (X,Y) Pc	2D Stylus
Peak Extreme Height	Sxp (p,q)	Functional
Peak Material Portion	SMr1	Functional
Peak Material Volume	Vmp(p)	Functional
Peak Valley Portion	SMr2	Functional
Reduced Peak Height	Spk	Functional
Reduced Peak Height Along X,Y	Stylus (X,Y) Rpk	2D Stylus
Reduced Peak Height to Core Ratio	Spk/Sk	Functional
Reduced Peak Height to Reduced Valley Depth Ratio	Spk/Svk	Functional
Reduced Valley Depth	Svk	Functional
Reduced Valley Depth Along X, Y	Stylus (X,Y) Rvk	2D Stylus
Reduced Valley Depth to Core Ratio	Svk/Sk	Functional
Root Mean Square Profile Wavelength Along (X, Y)	Stylus (X,Y) λq	2D Stylus
Root Mean Square Roughness	Sq	Height
Root Mean Square Slope Along X,Y	Stylus (X,Y) Δq	2D Stylus
Root Mean Square Slope in X,Y	Slope Rq (X,Y)	Legacy
Root Mean Square Surface Slope	Sdq	Hybrid
Skewness	Ssk	Height
Stylus Δq Ratio	Stylus X Δq/Stylus Y Δq	2D Stylus
Stylus λq Ratio	Stylus X λq/Stylus Yλq	2D Stylus
Stylus Pc Ratio	Stylus X Pc/ Stylus Y Pc	2D Stylus
Stylus Ra Ratio	Stylus X Ra/Stylus Y Ra	2D Stylus
Stylus Rz Ratio	Stylus X Rz/Stylus Y Rz	2D Stylus
Summit Density	Sds	Hybrid
Surface Area Index	SAI	Legacy
Texture Aspect Ratio	Str	Spatial
Texture Direction	Std	Spatial
Void Volume	Vv(mr)	Functional

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