original passage: Because it is resistant to corrosion, nickel was occasionally used as a substitute for decorative silver. Nickel was also occasionally used in some countries after 1859 as a cheap coinage metal (see above), but in the later years of the 20th century, it was replaced by cheaper stainless steel (i.e. iron) alloys, except in the United States and Canada.
original sentence: iron) alloys, except in the United States and Canada.
sentence2: When Americans and Canadians refer to their common 5-cent coin as a nickel in the late 20th and early 21st century, are they doing so out of tradition rather than as a reference to metal that actually makes up the coin (as alluded to in this passage)?
sentence1: Because it is resistant to corrosion, nickel was occasionally used as a substitute for decorative silver. Nickel was also occasionally used in some countries after 1859 as a cheap coinage metal (see above), but in the later years of the 20th century, it was replaced by cheaper stainless steel (i.e. iron) alloys, except in the United States and Canada.