Latent heat Lathe and planer tools tools, high speed Latrobe temper list Lead bath pot furnace Leeds & Northrup potentiometer optical pyrometer Liberty engine, highly stressed parts of Liberty engine materials, application to automotive industry motor connecting rods motor, crankshaft motor piston pin Local case hardening Luting mixture M Machineability of steel Machinery steel, annealing Magnet test Making steel in electric furnace Manganese steel furnace Manufacture of high speed steel Marquardt mass tubes Martensite Medium carbon steel, effect of copper on Metallography Microphotographs Microscopic examination Milling cutters, high speed Mixture for luting Modern hardening room Molten metal pyrometers Molybdenum Muffle furnace N Nickel Nickel-chromium steel steels, S. A. E. Nickel, influence of, on steel steel affinity for carbon steels, S. A. E. Non-homogeneous melting Non-shrinking steels Normalizing O Oil bath for tempering cooling on roof fired furnace hardening steel, forging steels temperature of quenching Open hearth furnace Operating costs of furnaces Outer surface decarbonizer Over-heated steel, restoring Overheating dies P Pack-hardening high speed steel Packing work for carburizing Paste for hardening dies Pearlite Penetration of carbon carbon, chart of in case hardening Phosphorus Pickling Liberty motor forgings Pig iron Piston pin, Liberty motor Placing pyrometers Planer tools, high speed "Points" of carbon in steel Potentiometer, Leeds & Northrup Pots for carburizing Press for testing gears Preventing carburization cracks in hardening Properties of alloy steels of alloy steels, table of steel Protective screens for furnaces Puddled iron Punches and chisels, steels for Pyrometers calibration copper ball indicating inspection iron ball molten metal optical placing recording Siemens testing water Q Quality and structure of high speed steel of steel Quenching, after carburizing dies in tank obsolete method oil, temperature of tank tool steel R Rate of absorption of carbon Recording temperatures Red shortness Refining the grain Regenerative open hearth furnace Restoring overheated steel Rifle barrels, forging components, annealing Roof system of cooling oil Rust-proof steel annealing of corrosion of hardening of S