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80 Plus (trademarked 80 PLUS) is a voluntary certification program launched in 2004, intended to promote efficient energy use in computer power supply units (PSUs). Certification is acquirable for products that have more than 80% energy efficiency at 20%, 50% and 100% of rated load, and a power factor of 0.9 or greater at 100% load.
80 20 180 Naval brass (ASTM B21) Cu 60.0, Zn 39.25, Sn 0.75 Annealed 22 56 40 90 Resistance to salt corrosion Cold-drawn 40 65 35 150 Muntz metal (ASTM B111) Cu 60.0, Zn 40.0 Annealed 20 54 45 80 Condensor tubes Aluminium bronze (ASTM B169 alloy A, B124, B150) Cu 92.0, Al 8.0 Annealed 25 70 60 80 — Hard 65 105 7 210
The measurement of sales of popular music starts high relative to the wedding anniversary scale, concentrating on gold and platinum (see gold album).Likewise, credit card companies usually have a "gold card" and a "platinum card" (many formerly had a "silver card" then followed by a "gold card", but due to similarity in appearance between silver and platinum these were often discontinued with ...
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The name is mostly applied informally to compositions between 20–80% gold and 80–20% silver, but these are strictly called gold or silver depending on the dominant element. Analysis of the composition of electrum in ancient Greek coinage dating from about 600 BC shows that the gold content was about 55.5% in the coinage issued by Phocaea.
At first glance, they appear similar but choosing a 70/30 vs. 80/20 asset allocation can impact your investment goals and outcomes. A financial advisor could help you create a financial plan for ...
Bronze is an alloy consisting primarily of copper, commonly with about 12–12.5% tin and often with the addition of other metals (including aluminium, manganese, nickel, or zinc) and sometimes non-metals (such as phosphorus) or metalloids (such as arsenic or silicon).
Bronze (tin, aluminum or other element) Aluminium bronze ; Arsenical bronze (arsenic, tin) Bell metal ; Bismuth bronze ; Brastil (alloy, bronze) [5] [6] Florentine bronze (aluminium or tin) Glucydur (beryllium, iron) Guanín (gold, silver) Gunmetal (tin, zinc) Phosphor bronze (tin and phosphorus) Ormolu ; Silicon bronze (tin, arsenic, silicon)