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Britannia metal (also called britannium, Britannia ware, [1] or Vickers White Metal [2]) is a specific type of pewter alloy, favoured for its silvery appearance and smooth surface. The composition by weight is typically about 92–93% tin , 5–6% antimony , and 2% copper .
While the term pewter covers a range of tin-based alloys, the term English pewter has come to represent a strictly-controlled alloy, specified by BSEN611-1 and British Standard 5140, consisting mainly of tin (ideally 92%), with the balance made up of antimony and copper. Significantly, it is free of lead and nickel. Although the exact ...
Pewter (/ ˈ p juː t ər /) is a malleable metal alloy consisting of tin (85–99%), antimony (approximately 5–10%), copper (2%), bismuth, and sometimes silver. [1] In the past, it was an alloy of tin and lead , but most modern pewter, in order to prevent lead poisoning , is not made with lead.
This is a list of prices of chemical elements. Listed here are mainly average market prices for bulk trade of commodities. Data on elements' abundance in Earth's crust is added for comparison. As of 2020, the most expensive non-synthetic element by both mass and volume is rhodium.
In 2013 the average price paid per ounce of pure silver was $4.12 up from $4.06, $3.99, $3.97 in 2012, 2011, 2010. Penasquito (one of the largest silver deposits in the world, Silver Wheaton's 25% interest would rank in the top 25 silver mines in the world) will give the company an average of 7 million ounces annually for 22 years (begins early ...
Alzheimer's disease is the most common form of dementia, affecting more than three million Americans per year. And while its exact cause is unknown, researchers may have just had a breakthrough.
The first legal definition of sterling silver appeared in 1275, when a statute of Edward I specified that 12 troy ounces of silver for coinage should contain 11 ounces 2 + 1 ⁄ 4 pennyweights of silver and 17 + 3 ⁄ 4 pennyweights of alloy, with 20 pennyweights to the troy ounce. [11] This is (not precisely) equivalent to a millesimal ...
The Home Alone house is officially off the market!. The famous setting of the beloved 1990 Christmas classic, located in Winnetka, Ill., has officially sold over the asking price for $5.5 million ...