Table 4.

Results of the Shapiro–Wilk test for the roughness parameters after milling the AZ31 magnesium alloy, λ_s = 20° tool.

	Lateral Face of Workpiece				End Face of Workpiece
Comparison	vc = 400 m/min		vc = 1200 m/min		vc = 400 m/min		vc = 1200 m/min
Test Result	Test	p-Value	Test	p-Value	Test	p-Value	Test	p-Value
Ra	0.82009	0.11696	0.91865	0.52124	0.98436	0.95652	0.89208	0.36767
Rz	0.96982	0.87409	0.98235	0.94678	0.79289	0.07083	0.9036	0.43009
RSm	0.88425	0.32902	0.95601	0.77995	0.82741	0.13302	0.79527	0.07411
Rsk	0.94807	0.72339	0.84938	0.19257	0.90778	0.45435	0.93953	0.66263
Rku	0.83942	0.16332	0.95506	0.77327	0.92164	0.54058	0.98535	0.96103
Comparison	fz = 0.05 mm/tooth		fz = 0.3 mm/tooth		fz = 0.05 mm/tooth		fz = 0.3 mm/tooth
Ra	0.79205	0.0697	0.95492	0.77224	0.76973	0.04487	0.86523	0.24764
Rz	0.87892	0.30443	0.91473	0.49656	0.91012	0.46828	0.82873	0.1361
RSm	0.89477	0.38164	0.98237	0.94689	0.94044	0.66902	0.9143	0.49387
Rsk	0.98474	0.95825	0.82927	0.13738	0.94352	0.69091	0.79541	0.07431
Rku	0.81641	0.10952	0.90784	0.4547	0.91115	0.47455	0.79599	0.07513