DIY bumper kits made of diamond plate?

I’ve been searching everywhere for a DIY bumper kit that isn’t just the option of aluminum and regular steel. Has anyone seen one or have any leads to get one made? I can make one myself but it would be a lot easier with a cnc machine instead of plasma cutting every piece. I asked one site that had a kit I really like but they told me they couldn’t get diamond plate.. which doesn’t make sense to me because anywhere that will sell sheets of aluminum or steel would have diamond plate but hey what do I know. I appreciate any leads in advance.