Yes Rotary Broaching works in all sorts of Stainless Steel including 303, 304, 316, 416 and even 17-4. It may be limited by size and depth. Call our technical support staff at 239-628-4800 for more information.
The best grade for broaching stainless steel of all types is PM M-4. This powdered metal has a super-fine grain size and carbide microstructure resulting in extremely versatile high speed steel which provides a unique combination of high wear resistance with high impact toughness. Polygon Solutions recommends PM M-4 for broaching stainless steel and improving tool life in general.
When broaching stainless steel, please also consider these recommendations to speed and feed modifications.
1. SLOW THE FEED RATE FROM STANDARD .002-.003 IPR TO .001 IPR
2. SLOW THE SPEED TO 50-100 RPM UNTIL ENGAGED .005-.010″ THEN RAMP UP TO 700-800 RPM