hello everyone,
I am trying to make some tooling and seeing if some one can help me to choose the best kind of steel .
I would like it to be very strong, I am also thinking of heat treating to make it hard, that way it will last a long time, this will be use for punch and dies.
so far these are some steel types that I can think of (1018,1144,4140,and A36 ) if any one has a better idea I would greatly appreciated .

Thank you