The mechanical engineer's pocket-book. A reference-book of rules, tables, data, and formulæ, for the use of engineers, mechanics, and students (1910)
Kent, William, 1851-1918 · New York, J. Wiley & sons · leaf 1288
al classes: (a) cast iron and hard steel, steel of 0.45-0.50percent carbon, 100,000 pounds tensile strength, and 18 per cent stretch,being a low limit of hardness ; (6) soft steel, softer than above; (c) chillediron; (d\ tire steel; (e) extremely soft steel of carbon, say, 0.10-0.15 percent. The… … 1240 THE MACHINE-SHOP. for soft steel, 61 degrees; for chilled iron, 86 to 90 degrees; for tire steel,74 degrees; for extremely soft steel, keener than 61 degrees. A toolshould be given more side than back slope; it can then be ground moretimes without weakening, the chip does not strike the tool…
Mechanical engineering
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