1866 23 June 425/3 Round Steel Shot.—... Pot-steel is the sole material used, and the steel spheres, about 9 inches in diameter, are swaged out in blocks under the steam hammer.
1875 R. F. Martin tr. J. Havrez 10 Steel tram wheels..made of a mild ‘pot steel’ and annealed carefully in an oven after they are cast.
1884 4 Jan. 11/6 The pot-steel process has been almost wholly superseded.