<p>I need a cheap material that is hard and that I can attach to wood. The material will be dragged over concrete and preferably wont wear down. Any ideas?</p>
<p>What are you trying to do with it?</p>
<p>Everything will wear down, especially if you are trying to score the concrete. Most things that are cheap are also quick to wear. </p>
<p>With the limit knowledge of the application I would recommend a fully hardened tool steel CPM 15V, as it has a high resistance to wear. Also, 440C has a really high hardness when hardened, but it is a little more exotic.</p>
<p>Again, knowing the application would yield a better result.</p>