Machinable Materials (VDI 3323)
VDI 3323 Table
The VDI 3323 standard defines a unified classification system for metallic and non-metallic materials according to their machinability characteristics, in order to facilitate the selection of suitable cutting tools, cutting parameters, and machining strategies. The standard is based on ISO material codes (such as P, M, K, N, S, H) and provides detailed subcategorization based on chemical composition, mechanical properties, and cutting behavior.
It is widely used by tool manufacturers and metalworking industries to achieve standardization and consistency in evaluating tool suitability and machining performance.
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Related guides
TapsMetric and inch taps: materials, pitch and selection.
DrillsHSS, cobalt and carbide drills for every material.
Lathe Cutting ToolsLathe inserts and tool holders: geometries and selection.
CountersinksChamfer and taper milling cutters.
Basic Cutting TheoryFundamentals of cutting: speeds, feeds and materials.
[P] - STEELS (STEEL)Group P: steels: cutting characteristics and recommendations.
[M] - STAINLESS STEELS (STAINLESS STEEL)Group M: stainless steels: machining peculiarities.
[K] - CAST IRONGroup K: cast irons: behavior and cutting parameters.
[N] - NON-FERROUS MATERIALS (NON FERROUS)Group N: non-ferrous (aluminium, copper) and their cutting.
[S] - SUPER ALLOYSGroup S: superalloys and titanium: difficult machining.
[H] - HARDENED MATERIALSGroup H: hardened materials: high-hardness cutting.
Υλικά Κοπτικών ΕργαλείωνCutting-tool materials: HSS, carbide and coatings.
Carbide Rotary Burrs