what alloys are in platinum?
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Platinum-iridium alloy Platinum-iridium alloy. Platinum-iridium alloys are alloys of the platinum group precious metals platinum and iridium. Typical alloy proportions are 90:10 or 70:30 (Pt:Ir). These have the chemical stability of platinum, but increased hardness. The Vickers hardness of pure platinum is 56 HV while platinum with 50% of iridium can reach over 500 HV.
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What is the Best Jewelry Metal? As with other metals, Platinum is commonly mixed with other metals. However, for a piece of jewelry to be labeled as platinum it must have a minimum level of purity of at least 95% pure platinum. A purity level of less than 95% would require the metal be identified as a Platinum alloy. Ferrous metal is one that contains Iron, while a non-ferrous metal does not. Since these forms of metals tend to rust, most jewelry is created with non-ferrous metals. Normally, most jewelry is made from non-ferrous metals with the exception of steel jewelry.
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- Only metals marked with a 950 or 900 purity designation are considered high-grade platinum. Alloys containing a lower ratio are often used to make jewelry, but these pieces don't impart the same high standards of quality, longevity, or beauty.50 Platinum. Pieces marked with a 950 purity are a blend of 95% platinum and 5% alloy metals (usually ruthenium, copper, cobalt, iridium, rhodium, or palladium).
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PALLADIUM Palladium is usually found with platinum and other members of the noble metal group. Palladium alloys are commonly used in surgical instruments, such as those used here in open-heart surgery. Russia and South Africa produce about 93 percent of the palladium mined in the world.
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What Is a Medium in Art: Definition & Terms In art, a medium is the material that artists use to create their art. It's that simple. Whatever a piece of art is made out of is its medium. The plural of medium is media. So, one piece of art can be made of one medium or several media. If you've ever been to an art museum or gallery, you've probably seen those little signs next to each piece that look something like this:
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- What is claimed is: 1  1. An alloy having a white finish consisting essentially of platinum present at a concentration of about 95% by weight, rhodium present in a concentration of from about 2.5% to about 3.5% by weight and ruthenium being present at a concentration from about 1.5% to about 2.5% by weight.
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Platinum Platinum has six naturally occurring isotopes: 190 Pt, 192 Pt, 194 Pt, 195 Pt, 196 Pt, and 198 Pt. The most abundant of these is 195 Pt, comprising 33.83% of all platinum. It is the only stable isotope with a non-zero spin; with a spin of 1 / 2, 195 Pt satellite peaks are often observed in 1 H and 31 P NMR spectroscopy (i.e., Pt-phosphine and Pt-alkyl complexes).
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- Platinum is an attractive silvery white metal with a melting point of 1,774 deg C, a boiling point of 3,827 deg C and a density of 21.45 g/cu cm at room temperature. It has a coefficient of thermal expansion close to that of soda lime silica glass and is consequently used to make sealed electrodes in soft glass systems.
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Ring Metals: A Guide Platinum is a white metal, but unlike gold it is used in jewelry in almost its pure form (approximately 95% pure). Platinum is extremely long wearing and is very white, so it does not need to be Rhodium plated like white gold. Platinum is very dense (heavy), so a platinum ring will feel heavier than an 18ct gold ring.
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Platinum Platinum - Compounds. 1  Hexachloroplatinic acid mentioned above is probably the most important platinum compound, as it serves as the precursor for many other platinum compounds.
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- Stainless Steel / Hi Temp Alloys / Titanium Stainless Steel, Hi Temperature Alloys, Nickel Alloys, and Titanium play a major role in the manufacturing and production within the aerospace, machine shop, lumber, marine, and oil industries of the Northwest.
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- Due to the continuing interest in platinum and platinum jewelry, it is opportune to review the characteristics. and industrial uses of platinum and platinum alloys. This discussion will be followed by a discussion of. platinum alloys specifically for jewelry and their uses.
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An Overview Of Common Alloys Used In Jewelry Gold is harder than some platinum alloys and will resist scratches better. Platinum is almost twice as durable as gold, is more ductile has much greater longevity. For the body of the piece the differences are not critical. For the prongs they have implications: For instance, white gold prongs will break.
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Native metal The gold group consists of gold, copper, lead, aluminium, mercury, and silver. The platinum group consists of platinum, iridium, osmium, palladium, rhodium, and ruthenium. Amongst the alloys found in native state have been brass, bronze, pewter, German silver, osmiridium, electrum, white gold, and silver-mercury and gold-mercury amalgam.
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It's Elemental Pure iridium is very brittle and is nearly impossible to machine. It is primarily used as a hardening agent for platinum. Platinum-iridium alloys are used to make crucibles and other high temperature equipment. Iridium is also alloyed with osmium to make the tips of fountain pens and compass bearings.Iridium is the most corrosive resistant metal known. For this reason, the standard meter bar was created from an alloy of 90% platinum and 10% iridium.ure iridium is very brittle and is nearly impossible to machine. It is primarily used as a hardening agent for platinum. Platinum-iridium alloys are used to make crucibles and other high temperature equipment. Iridium is also alloyed with osmium to make the tips of fountain pens and compass bearings.
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Aluminum Grades Aluminum Grades Series 7xxx. Zinc, in amounts of 1 to 8% is the major alloying element in 7xxx series aluminum alloys (7075, 7050, 7049, 710.0; 711.0 etc.), and when coupled with a smaller percentage of magnesium results in heat-treatable alloys of moderate to very high strength.
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- Platinum atom has 78 protons and electrons; the number of neutrons  is variable and depends on the atomic mass of the isotope (atomic  mass of the isotope - atomic number = …number of neutrons).    The stable isotopes have 114, 116, 117, 118, or 120 neutrons.
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Contents: Platinum vs White Gold Platinum vs. White Gold. Platinum is a naturally occurring white metal. White gold is created as an alloy of the naturally occurring gold with white metals like silver and palladium to get a white hue. In addition, white gold pieces are often covered with a thin plating of rhodium, a platinum group metal, for strengthening and a whiter appearance.
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Platinum and Other Heavy Metal Compounds in Cancer Chemotherapy The platinum-containing chemotherapeutic agents remain key components of many of the most effective regimens for the treatment of cancer. New information about the chemistry, pharmacology and molecular mechanisms by which these drugs work is leading to both the development of new drugs and more effective use of existing members of this class.
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- Platinum is a soft, dense, ductile metal that is very resistant to corrosion. It is used to make jewelry, wire, electrical contacts and laboratory vessels. Platinum expands at nearly the same rate as soda-lime-silica glass, so it is used to make sealed electrodes in glass systems.
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10 Types of Silver Used in Jewelry Argentium Silver and Non-Tarnish Alloys. Non-tarnish alloys are fairly new to the market. Argentium is one brand but there are others available that are quite similar. These alloys are a minimum of 92.5% silver though some will be slightly higher in silver content.
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An Overview of Common Alloys used in Jewelry An Overview of Common Alloys used in Jewelry. 1  Fine jewelry is created from precious metals, or more commonly, mixtures of metals known as alloys. This article provides some important information about gold, white gold, rose gold, platinum, and rhodium plating. Many different alloys exist today and new ones are developed from time to time, each having different properties.
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Products Titanium, available in both the commercially pure or alloy form, is widely used in many critical and highly-stressed parts, thanks to its combination of a high strength-to-weight ratio (it’s 40% lighter than steel), excellent mechanical properties and corrosion resistance.
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Platinum Platinum is considered a precious metal, although its use is not as common as the use of gold or silver. The frame of the Crown of Queen Elizabeth the Queen Mother, manufactured for her coronation as Consort of King George VI, is made of platinum. It was the first British crown to be made of this particular metal.he least stable of these is 166 Pt with a half-life of 300 µs, whereas the most stable is 193 Pt with a half-life of 50 years. Most platinum isotopes decay by some combination of beta decay and alpha decay. 188 Pt, 191 Pt, and 193 Pt decay primarily by electron capture. 190 Pt and 198 Pt have double beta decay paths.
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It's Elemental Pure iridium is very brittle and is nearly impossible to machine. It is primarily used as a hardening agent for platinum. Platinum-iridium alloys are used to make crucibles and other high temperature equipment. Iridium is also alloyed with osmium to make the tips of fountain pens and compass bearings.
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- Platinum Platinum is element 78, so its nucleus contains 78 protons and there are 78 electrons in the electron cloud of neutral atoms.