Lesson plan
Monel
gate in the entrance hall of Detroit's Guardian Building is made from Monel. Monel is a group of alloys of nickel (from 52 to 68%) and copper, with small amounts of iron, manganese, carbon, and silicon. Monel is not a cupronickel alloy because it has less than 60% copper. Stronger than pure nickel, Monel alloys are resistant to corrosion by many aggressive agents, including rapidly flowing seawater. They can be fabricated readily by hot- and cold-working, machining, and welding. Monel was created in 1905 by the American industrialist Robert Crooks Stanley at the International Nickel Company (Inco) and patented in 1906. It was named after Ambrose Monell, the president of Inco, with an L dropped, because family names were not allowed as trademarks. The trademark was registered in May 1921, and now belongs to the Special Metals Corporation, the successor of Inco and Huntington Alloys Corporation. As an expensive alloy, it is used in applications where it cannot be replaced with cheaper alternatives. For example, in 2015, Monel pipe was more than three times as expensive as carbon steel pipe.
Article summary
gate in the entrance hall of Detroit's Guardian Building is made from Monel. Monel is a group of alloys of nickel (from 52 to 68%) and copper, with small amounts of iron, manganese, carbon, and silicon. Monel is not a cupronickel alloy because it has less than 60% copper. Stronger than pure nickel, Monel alloys are resistant to corrosion by many aggressive agents, including rapidly flowing seawater. They can be fabricated readily by hot- and cold-working, machining, and welding. Monel was created in 1905 by the American industrialist Robert Crooks Stanley at the International Nickel Company (Inco) and patented in 1906. It was named after Ambrose Monell, the president of Inco, with an L dropped, because family names were not allowed as trademarks. The trademark was registered in May 1921, and now belongs to the Special Metals Corporation, the successor of Inco and Huntington Alloys Corporation. As an expensive alloy, it is used in applications where it cannot be replaced with cheaper alternatives. For example, in 2015, Monel pipe was more than three times as expensive as carbon steel pipe.
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Discussion questions
- Summarise the article in your own words. Which single claim would you verify first, and why?
- Which claim in this article is most likely to be revised as the sources update? How would you check its current status?
- If two sources disagreed about one of these facts, what would you need in order to trust one over the other?
Bibliography
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Key claims and bibliography are generated from the same tracked claims and sources as the article page.