Ferrous metals include iron and alloys with at least what percentage iron?

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Multiple Choice

Ferrous metals include iron and alloys with at least what percentage iron?

Explanation:
Ferrous metals are those in which iron is the main component. In practice, iron must make up at least half of the alloy to be classified as ferrous. This means pure iron and iron-based alloys like steel and cast iron are ferrous because iron is the dominant element, while an alloy with less than 50% iron is generally non-ferrous. So the threshold is 50% iron by weight.

Ferrous metals are those in which iron is the main component. In practice, iron must make up at least half of the alloy to be classified as ferrous. This means pure iron and iron-based alloys like steel and cast iron are ferrous because iron is the dominant element, while an alloy with less than 50% iron is generally non-ferrous. So the threshold is 50% iron by weight.

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