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Crucible Industries, commonly known as Crucible, is an American company which develops and manufactures specialty steels, and is the sole producer of a line of sintered steels known as Crucible Particle Metallurgy (CPM) steels.
Crucible steel is steel made by melting pig iron, cast iron, iron, and sometimes steel, often along with sand, glass, ashes, and other fluxes, in a crucible. Crucible steel was first developed in the middle of the 1st millennium BCE in Southern India and Sri Lanka using the wootz process. [1] [2] [3] [4]
Crucible steel is steel that has been melted in a crucible rather than having been forged, with the result that it is more homogeneous. Most previous furnaces could not reach high enough temperatures to melt the steel. The early modern crucible steel industry resulted from the invention of Benjamin Huntsman in the 1740s. Blister steel (made as ...
154CM is a type of stainless steel developed and manufactured in the United States by Crucible Materials Corporation (now - Crucible Industries).Crucible 154CM is a modification of martensitic stainless steel type 440C to which molybdenum has been added.
Steel is an alloy composed of between 0.2 and 2.0 percent carbon, with the balance being iron. From prehistory through the creation of the blast furnace, iron was produced from iron ore as wrought iron, 99.82–100 percent Fe, and the process of making steel involved adding carbon to iron, usually in a serendipitous manner, in the forge, or via the cementation process.
In 2009, Crucible Steel introduced an update to CPM-S30V to meet the needs of renowned knife maker Chris Reeve that they called CPM-S35VN. The addition of 0.5% Niobium, and reductions in both Carbon (from 1.45% to 1.40%) and Vanadium (from 4% to 3%) produced an alloy with 25% increase in measured Charpy V-notch toughness over S30V (Crucible claims 15-20% improvement).
The Steel Crisis: The Economics and Politics of a Declining Industry (1986) Seely, Bruce E., ed The Iron and Steel Industry in the 20th Century (1994) (Encyclopedia of American Business History and Biography) Skrabec Jr, Quentin R. The Carnegie Boys: The Lieutenants of Andrew Carnegie that Changed America (McFarland, 2012). Temin, Peter.
California Steel Industries; Cambria Iron Company; Camden Forge Company; Carnegie Brothers and Company; Carnegie Steel Company; Carpenter Technology Corporation; Cleveland-Cliffs; Columbia Steel Company; Columbus Castings; Commercial Metals Company; Commonwealth Steel Company; Continental Steel Corporation; Crucible Industries; Cyclops Steel