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White cast iron displays white fractured surfaces due to the presence of an iron carbide precipitate called cementite. With a lower silicon content (graphitizing agent) and faster cooling rate, the carbon in white cast iron precipitates out of the melt as the metastable phase cementite, Fe 3 C, rather than graphite. The cementite which ...
Founded in 1865 as the Seldon and Griswold Manufacturing Company, the Griswold company became known as the premier manufacturer of high-quality cast-iron kitchen items in the United States. The Griswold cast iron foundry was based in Erie, Pennsylvania; and until the early 1900s, cast-iron items from this company were marked with an "ERIE" logo.
J. W. Fiske & Company of New York City was the most prominent American manufacturer of decorative cast iron and cast zinc in the second half of the nineteenth century. [1] In addition to their wide range of garden fountains, statues, urns, and cast-iron garden furniture, they provided many of the cast-zinc Civil War memorials of small towns ...
The pits on the surface are often obscured by corrosion products. Pitting can be initiated by a small surface defect, being a scratch or a local change in the alloy composition (or local impurities, e.g. metallic sulfide inclusions such as MnS or NiS), [10] [11] or a damage to the protective coating. Polished surfaces display a higher ...
Enamel over cast iron is a popular material for kitchen and bathroom sinks. Heavy and durable, these sinks can also be manufactured in a very wide range of shapes and colors. Like stainless steel, they are very resistant to hot or cold objects, but they can be damaged by sharp impacts and once the glass surface is breached, the underlying cast ...
Cast iron is a poor heat conductor compared to copper and aluminum, and this can result in uneven heating if a cast-iron pan is heated too quickly or on an undersized burner. [7] Cast iron has a higher heat capacity than copper but a lower heat capacity than stainless steel or aluminum. [ 8 ]
Gothic châsse; 1185–1200; champlevé enamel over copper gilded; height: 17.7 cm (7.0 in), width: 17.4 cm (6.9 in), depth: 10.1 cm (4.0 in). Vitreous enamel, also called porcelain enamel, is a material made by fusing powdered glass to a substrate by firing, usually between 750 and 850 °C (1,380 and 1,560 °F).
Not all of these metals are found in all white metal alloys. Metals are mixed to achieve a desired goal or need. As an example, a base metal for jewellery needs to be castable, polishable, have good flow characteristics, have the ability to cast fine detail without an excessive amount of porosity and cast at between 230 and 300 °C (446 and 572 ...