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Negative Turning

Negative Turning: Geometry, Grade and Material Selection

Grade
GeometrySP0819SP4019NL200NL250
PMKN SHP MK NS HPMK NS HPMKN S H
1B
2N
3F
3J
4E
4T
4U
Flat-Top
5R

Negative Turning: Geometry, Grade and Material Selection

GeometryNL300NL400 GradeNL920
PM KN S HPM KN S HPMK NS H
1B
2N
3F
3J
4E
4T
4U
Flat-Top
5R
MaterialGuide –Keyto Recommended Inserts
Material Designation
P P Alloyed Unalloyed SteelsSteelsM StainlessM PH St SteelsainlessK Cast IronsN Aluminum& AlloysS HighTemp. AlloyH s Hard Materials