case-hardened steel
41Electrical discharge machining — An electrical discharge machine Electric discharge machining (EDM), sometimes colloquially also referred to as spark machining, spark eroding, burning, die sinking or wire erosion,[1] is a manufacturing process whereby a desired shape is obtained …
42Injection molding — (British: moulding) is a manufacturing process for producing parts from both thermoplastic and thermosetting plastic materials. Molten plastic is injected at high pressure into a mold, which is the inverse of the product s shape. After a product… …
43Ironclad warship — An ironclad was a steam propelled warship of the later 19th century, protected by iron or steel armor plates. [Hill, Richard. War at Sea in the Ironclad Age ISBN 0 304 35273 X; p.17] The ironclad was developed as a result of the vulnerability of… …
44Sand casting — Sand casting, also known as sand molded casting, is a metal casting process characterized by using sand as the mold material. It is relatively cheap and sufficiently refractory even for steel foundry use. A suitable bonding agent (usually clay)… …
45Plough — Plow redirects here. For the Canadian soldier, see Edward Chester Plow. Plowman redirects here. For the surname, see Plowman (surname). Furrow redirects here. For other uses, see Furrow (disambiguation). For other uses, see Plough… …
465.56×45mm NATO — 5.56x45mm NATO with measurement Type Rifle Place of origin …
47Anvil — An anvil is a manufacturing tool, made of a hard and massive block of stone or metal used as a support for chiseling and hammering other objects, such as in forging iron and steel items. HistoryAnvils have been used since early Bronze Age times… …
48Armament of the Iowa class battleship — The armament of the engaged the Imperial Japanese Navy battlecruiser Kirishima at a range of convert|18500|yd|m| 2 at night.cite book | last = Mindell | first = David | title = Between Human and Machine | publisher = Johns Hopkins | date = 2002 | …
49Nitriding — is a heat treating process that diffuses nitrogen into the surface of a metal to create a case hardened surface. It is predominantly used on steel, but also titanium, aluminum and molybdenum. Typical applications include gears, crankshafts,… …
50Tank — For other uses, see Tank (disambiguation). Tank A former British Arm …
