Tool Steel M4 - 350 Micron Substrate

What are the mechanical properties of M4 tool steel, is it suitable to
punch thermoplastic at 350 micron with a press tonnage of 10 tons.
What would be the recommended life of the tool, i.e. number of hits
until it lost its cutting edge? is there a better tool steel for the
above material?
Thanks for you thoughts,
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