Cavalo de Aço is a Brazilian telenovela produced and broadcast by TV Globo. It premiered on 24 January 1973 and ended on 21 August 1973, with a total of 179 episodes in Black and white. It is the twelfth "novela das oito" to be aired on the timeslot. It was created and written by Walter Negrão and directed by Walter Avancini, David Grimberg and Daniel Filho.
