Harry Brearley
Harry Brearley (18 February 1871 – 14 July 1948) was an English metallurgist, usually credited with the invention of "rustless steel" (later to be called "stainless steel" in the anglophone world).
Frederick Settle Barff
Barff was awarded two Art Society's medals: one for a paper on "Zinc White as Paint, and the Treatment of Iron for the Prevention of Corrosion" and the other for his paper on "A New Antiseptic Compound", the latter of which he presented to the society in March 1882.
Barff is most widely remembered for his invention of a method of rust proofing cast iron, named after him. The method used superheated steam to form a layer of tri-iron tetroxide(FeO), which proved much cheaper than traditional galvanisation. The method was subsequently improved by George Bower, after which the process became known as the Bower–Barff process. The Bower-Barff Rustless Iron Co. had works in Southwark and New York, the latter supplying cast-iron for many of the city's landmark buildings.