Show Ferrous Metals Most Imp Important Among the oldest alloys arc are brass and bronze the former a combination of copper and zinc zinc the latter of copper copper copper cop cop- per and tin The Romans used brass and before them in King Solomons Solomon's temple a brazen sea or brass bowl caught the rain water Bronze long used for statuary aids the electrical conductivity of copper The Thc ferrous metals iron and steel arc perhaps the most important Iron the oldest metal is mentioned in records records rec ree dating to B. B C. C Vulcan the Greek god was a blacksmith In the form of pig piS iron fron this metal may be used to make wrought or cast iron or steel Wrought iron formerly most important has given civen way v to steel in inmany inmany inmany many products Cast iron however still finds many uses in pipes stoves furnaces mail boxes and hydrants Much l of the machinery with which other metals metah are worked is itself of cast Iron single castings having been made weighing pounds Steel the youngest of irons is also the greatest The invention of the Bessemer converter in 1885 permitted the thc manufacture of cheap steel which soon supplanted wrought iron as the most used ferrous metal In 1927 more than 32 million tons wore vore pro pro- It is used in tho rails which girdle the thc earth carth In the forms of girders steel is directly responsible for our skyscrapers From needles to locomotives from razor blades to generators steel is the all conquering metal without which civilization as we know it would be well nigh impossible impose sible More l than different metals and alloys arc in current use according to The Book of Metals l from which the above c facts are taken One firm alone makes steel alloys The rise of the automobile is attributable in part to alloys The use of chrome vanadium vanadium vana vana- d um steer enabled Henry Ford to manufacture a light car that was likeWise likewise like like- wise strong and cheap to produce The entire automotive industry followed suit alloys of particular characteristics tics being made for various parts I Airplanes too use user many an alloys I |