Cast steel was invented by Benjamin Huntsman of Sheffield in the 18th century. His innovation transformed Sheffield into the leading steel producer in the world. For 200 years other countries including America, Sweden, France and Germany tried in vain to match the quality of the English steel . The two world wars in the 20 century forced the Sheffield steel masters to adopt faster and cheaper methods of producing steel and cast steel became a thing of the past. Only recently have the Japanese been able to produce hand tools of the quality of pre war English chisels and planes and at a very high price. If you want to learn more about the cast steel process click on the link below.