Iron+&+Steel


 * Iron & Steel ** //Iron & Steel like construction materials //



Iron is an expensive material that is used in constructions to structural functions. It's a strong material in compression and so weakness in tension.

Steel is a very weight material, very strong in tension and compression but loses strength in extremely hig temperatures.

Those materials are very commons and used in constructions like the skycrapers.

When I thought and compared the skycrapers and the cast buildings I conclude that the skyscrapers killed the cast buildings because is common that a new technique kill another old technique. Maybe when in the constructions was discovered the skyscrapers the architects was feeled more atracted and try to reproduce it, forgotten the cast buildings and working and designing the skyscrapers, taking in count esthetic characteristics and develop it.

Also exist the **wrought iron**. This is a kind of iron that contain a very low carbon content. Some characteristics of this material are that is malleable, ductile and is very easy to weld it. The wrought iron can be used to make furniture, for example, tables, beds and bars.



In general, I think that the metals can be called "**cold materials**". Why? simple: because are a kind of material that have the propertie to conduct the energy and absorb the temperature, so they are very sensible and can change it temperature depending of the external conditions. Therefore is easy that the metals are cold or hot, depending to the ambient.