Iron ore
In cast iron sulfur promotes the formation of white iron. As little as 0.5% can counteract the effects of slow cooling and a high silicon content . White cast iron is more brittle, but also harder. It is generally avoided, because it is difficult to work, except in China where high sulfur cast iron, some as high as 0.57%, made with coal and coke, was used to make bells and chimes . According to , good foundry iron should have less than 0.15% sulfur. In the rest of the world a high sulfur cast iron can be used for making castings, but will make poor wrought iron.
Metal furniture
Cast Iron is used mainly for outdoor finishings and settings, such as those used for bench legs and solid iron tables. It is suited to outdoor use due to its hardness, heaviness and general tough composition. The main disadvantage to this is that it, being a relatively pure form of Iron is subject to corrosion at the hands of the moisture and air.