Steel fencing is the strongest fencing possible. Steel fencing relies on its characteristic of being an alloy of iron and carbon. However, it sometimes is combined with other metals like tungsten or chromium to present alternate desirables. The common place for steel fencing is in typically dry climates such as the Western USA where rusting in not as much of an issue. Aside from the obvious strength of steel fencing, steel fences are usually welded together. This opposes what is typical of other fencing assembly where parts are held together by movable components. This adds great stability to a fencing structure.
In contrast to an aluminum fence which could endure some minor damage where there are children playing or a casual accident, steel fencing can handle the impact of motor powered vehicles such as a lawn mower or car, depending on other variables. Steel fencing will sometimes require sanding or repainting to help deal with rusting that ultimately will try to reclaim the metal back to its natural state.