C - Chemistry – Metallurgy – 22 – C
Patent
C - Chemistry, Metallurgy
22
C
75/132
C22C 38/06 (2006.01) C22C 38/00 (2006.01) C22C 38/24 (2006.01) C23C 8/26 (2006.01)
Patent
CA 1243507
-17- Abstract of the Disclosure Nitriding Grade Alloy Steel And Article Made Therefrom A nitriding grade alloy steel includes aluminum in a range of 0.07% to 0.30% by weight and vanadium in a range of 0.03% to 0.20% by weight. Prior art nitriding grade alloy steel generally have relied on molybdenum, nickel and other expensive alloy additions to provide nitridability and core hardness. The alloy steel includes only essential amounts of carbon, manganese, and chromium, in addition to small, controlled amounts of aluminum and vanadium. The alloy steel is not only economical to produce due to the absence of significant amounts of costly alloying elements, but also has a unique combination of hardenability, resistance to loss of hardness during tempering, and excellent nitride response. Articles manufactured from the new alloy steel are desirably hardened, tempered, machined and nitrided, and are useful in applications requiring high wear resistance and high stress loading. Such articles include gears, shafts, bushings, couplings and other such articles subjected to severe service applications.
473063
Caterpillar Tractor Co.
Kirby Eades Gale Baker
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