A $$60deg$$ symmetrical $$V$$ tool is used in shaping a work piece with a depth of cut of $$0.1$$$$mm$$ and feed of $$0.1mm/stroke$$. The theoretical peak to valley height, in $$mm,$$ of the surface produced is

When the depth of cut is increased, the specific cutting energy

In $$HSS$$ Tool materials the element tungsten can be completely replaced, without changing the material property by

Only negative rake angles are used with the following tool materials