Metal-work; a handbook for teachers and students (1914)
Adam, Hugh M. [from old catalog], Evans, James Humphrey, [from old catalog] joint author · New York, Longmans, Green and co.; London, E. Arnold · leaf 39
d Pig-iron presents the appearance of white ironwith grey spots, and is of variable hardness; it is sometimesproduced by mixing white and grey pig-iron. The average composition of pig-iron is— Carbon 2-30 to 5-50 per cent Silicon 0-13 „ 5-70 Manganese.. 0-00 „ 7-60 Sulphur 0-00 „ 0-87 Phosphorus… … Waste Gases Nitrogen Note :—Dotted Lines Indicate very small Quantities. CHAPTER IVMANUFACTURE OF WROUGHT-IRON Wrought-iron can be obtained by two methods: 1. By direct reduction of the ore, thereby dispensing withthe blast-furnace processes. 2. From cast-iron. By the first method, which is the…
Metal-work
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