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Everything about Fineness

Weight of fine metal in a precious metal object

The fineness of a precious metal object represents the weight of fine metal therein, in proportion to the total weight which includes alloying base metals and any impurities. Alloy metals are added to increase the hardness and durability of coins and jewelry, alter colors, decrease the cost per weight, or avoid the cost of high-purity refinement. For example, copper is added to the precious metal silver to make a more durable alloy for use in coins, housewares and jewelry. Coin silver, which was used for making silver coins in the past, contains 90% silver and 10% copper, by mass. Sterling silver contains 92.5% silver and 7.5% of other metals, usually copper, by mass. Wikipedia →

🧭 Start here: a 6-step reading path

  1. Read the overview: FinenessA 5-minute orientation
  2. Skim a recent paper: Effect of Biochar Dosage and Fineness on the Mechanical Properties and Durability of ConcreteInfluential work since 2022
  3. Pick up a classic book: The Well at the World's EndThe most-reprinted book on the subject
  4. Read the landmark paper: Effect of fly ash fineness on compressive strength and pore size of blended cement pasteCited 543 times
  5. Go sideways: Precious metalA closely related topic
  6. Go sideways: Britannia silverA closely related topic

📖 Definitions

Noun The quality or degree of being fine.

Noun The ratio, in a precious metal, of the primary metal to any additives or impurities.

Noun The ratio of length to width of a ship, aircraft or rocket

🏆 Landmark papers (most cited)

🆕 Influential since 2022

📚 Books worth reading

Ranked by number of editions on Open Library, a rough measure of how lasting a book is.

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