High Carbon│1⅛″ │ Slight │Lathe tools, Tool │ │ │ chisels, files, Steel │ │ │ saws. 11. Very High │ ¼″ │ Slight │Razors, lancets, Carbon │ │ │ graving tools, Tool │ │ │ saws for steel. Steel │ │ │ 12. High Steel │0 │ None │Dies for wire │ │ │ drawing. 13. White Iron │0 │ None │Dies for wire │ │ │ drawing. 14. White Cast │0 │ None │For Iron │ │ │ malleableizing, │ │ │ carwheels. 15. Annealed │ ½″ │ None │Railway and Malleable│ │ │ agricultural Cast Iron│ │ │ castings, │ │ │ fittings. 16. Cast Iron │0 │ None │Rolls, gears, for │ │ │ brakeshoes. Chilled │ │ │ Castings │ │ │ 17. Semi-Steel │0 │ None │Gears, steam │ │ │ cylinders, │ │ │ valves. 18. Gray Cast │0 │ None │Machine parts, Iron │ │ │ grates, │ │ │ radiators, │ │ │ valves, soil │ │ │ pipe. 19. Soft Gray │0 │ None │Stoves, Cast Iron│ │ │ hollowware, │ │ │ pipe fittings, │ │ │ misc. ───────────────┴─────────────┴──────────┴───────────────── Footnote 2: In degrees Fahrenheit. For our purposes, the same as the _melting points_ of the alloys. Footnote 3: Pounds required to pull apart lengthwise a bar one inch square. Footnote 4: Number of inches that a bar eight inches long will stretch before it breaks. [Illustration: IRON AND STEEL TEST PIECES AND INSTRUMENTS USED IN MEASURING THEIR SIZE, ELASTIC LIMIT AND ELONGATION ] understanding of the subject. There is given therefore, a table showing approximate comparative values of chemical compositions and physical properties of the alloys under discussion. It should be distinctly understood that the figures given in Table B are _approximate_ only and are intended to be average, or rather, perhaps, typical.