what is best HDPE or other materials on a battle bot?

[Cyboy 1]

what is best HDPE or other materials on a battle bot I am looking for the best material to build a battle bot which uses sonar sensors to find enemys?

[Steve Joblin]

most battlebots are made of steel or other hard metals... if your oponent has some type of blade, HDPE won't hold up.

[Trumpkin]

battlebots are usually RC (remote controlled) so you won't be using sonar sensors. I think metal or maybe polycarbonate would be best to build a battlebot with.

[airman00]

whats your budget?

[Cyboy 1]

I was trying to build a sort of sumobot thank NYX for the help.My budget is £100 and I can handle the electronics with my father (who is pretty experianced.)