Francisco Javier Astorga Ruiz Del Hoyo., Claudio Bottero offering original Steel Sculptures artworks. Modernist sculptors and the event of public art sculptures in the late 1950's and 1960' brought about a large group of artists that also experimented with other non traditional materials to create large sculptures. This is where steel comes into play. Immediately, names such as Richard Serra and Alexander Calder, Davis Smith come to mind. Sir Anthony Caro also used steel to weld large scale works or John Chamberlain created large scale compositions from steel. For example Mark di Suvero and abstract expressionist sculptor used wooden timbers, tires, scrap metal and structural steel. This exploration of different materials transformed over time into a focus on H-beams and heavy steel plates. Richard Serra on the other hand used a material called weathering steel (COR-TEN steel) for many of his sculptures. This type of steel was developed to eliminate the need for painting but forming a stable rust-like appearance if exposed to weathering. Many modern sculptors either weld steel compositions to a final artistic product and also use sheets of steel for their artworks.