Suggestion:

Steel is slick when you get oil on it. I almost used it on my 1 ton, but when I looked at weight and price, I went with wood which will absorb a lot of contaminates, is easy to modify, and will last pretty good. I have put 3600 lbs on my wood deck and it's been no problem. I did build a rather stout frame under it and you can see it in the tech tips. Then again if you put bedliner on it - it would resist scratches and give it some non-skid-ness.