Acmonital

Acmonital (acronym of acciaio monetario italiano, meaning "Italian monetary steel" in Italian) is a stainless steel alloy consisting mostly of iron, with 0.14% carbon, 17.5-19% chromium, 0.50% magnesium, 1.15% silicon, 0.03% sulfur, and 0.03% phosphorus by weight.

Acmonital was used for the Italian lira coins.

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