Uses of Tungsten Carbide
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- Category: Tungsten Information
- Published on Monday, 14 January 2013 16:16
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Tungsten carbide is formed by the union of tungsten and carbon. This metal is considered to be one of the hardest and most durable of all metals. Tungsten carbide has applications in industries such as mining, drilling and the military.
Facts
Tungsten carbide is known for its hardness and high melting point. On the Mohs scale for testing hardness, tungsten carbide receives a rating of nine, surpassed only by diamonds, which have a hardness of 10. This hardness makes tungsten carbide very scratch-resistant. The melting point of tungsten carbide is around 2,600 degrees Celsius. By itself, tungsten carbide is not a naturally occurring material, it is only produced by combining the elements of tungsten and carbon.
Uses
Cutting tools for drilling, mining and construction often incorporate the use of tungsten carbide. These are undoubtedly the biggest markets for tungsten carbide, accounting for around 60 percent of its use. The use of this material in jewelry is becoming popular. Everything from rings to necklaces can be fashioned out of tungsten carbide. Tungsten carbide is also used on the tips of trekking poles and as spikes on snowmobile equipment. It is also used in ball point pens to align the roller ball with ink. Filaments from light bulbs are made out of tungsten because of its resistance to heat.
Military
Tungsten carbide is used in the creations of some weapons' ammunition. Armor-piercing ammunition is manufactured from tungsten carbide.
Production
China, Russia and Korea are all major producers of tungsten, the primary material needed for tungsten carbide. Large reserves of tungsten can be found in certain countries such as Bolivia, Canada and the United States. Today, around 30,000 tons of tungsten carbide are produced annually throughout the world. Only 10 tons per year were being manufactured in the 1930's when it was first gaining widespread use.
History
Tungsten itself was discovered in the later 18th century, however, widespread use of tungsten carbide did not begin until the early 1920's. More useful applications were discovered in the 1930's when tungsten carbide was used in the milling and cutting of cast iron.
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What Is Tungsten Gold?
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- Category: Tungsten Information
- Published on Monday, 14 January 2013 16:00
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Shoppers who are looking to buy real gold may unfortunately purchase tungsten gold, or fake gold, by accident. Fake tungsten gold bars are cheap substitutes for the real thing.
Background
Tungsten gold is considered the Ancient Metal of Kings. Tungsten is also called “the heavy stone.”
Pricing
While gold is priced in the tens of thousands per pound, tungsten costs less than $100 per pound. Charging the real gold price for tungsten gold leads to a huge profit.
Hardfacing
Tungsten gold is scratch-resistant and lightweight. Per cubic centimeter, it has a density of 19.25 grams at room temperature. At liquid density, it is 17.6 grams per cubic centimeter.
Determining Type of Gold
It’s difficult for the average person to quickly spot tungsten gold. However, those who are experienced in the gold industry can find ways to determine if the gold is fake or not.
Purity of Other Metals
Silver and platinum tend to be pure, since the materials are often melted down for making cell phones and catalytic converters.
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How to Buy Tungsten
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- Category: Tungsten Information
- Published on Monday, 14 January 2013 15:24
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Tungsten, a metal with the atomic number 74 on the periodic table of elements, occurs naturally in rocks such as wolframite, scheelite, huebnertie and ferberite. Uses of tungsten include the filaments of electric lamps, electron and television tubes, spacecraft and high-temperature projects, heating elements for electrical furnaces and many other applications, as tungsten has the highest melting point of any metal.
Instructions
1
Decide which tungsten product is best for your needs. Tungsten can be found in its raw form, in the form of heat-treated alloys, or mixed with other metals. Tungsten is extracted from minerals, which is a difficult process, so it is much easier to purchase tungsten from a reputable dealer than to manufacture or extract it yourself. The uses of tungsten vary depending on its form; for example, tungsten and copper mixes are often used in engines and electrical wiring, while tungsten alloys have been used in cannon shells and grenades.
2
Purchase tungsten from companies with inventories of metal products in the United States and other countries such as the United Kingdom. Companies include the Midwest Tungsten Service, which offers tungsten wire, alloys and raw metal to interested buyers. Eagle Alloys Corporation also offers raw tungsten metal, tungsten alloys and tungsten mixed with other metals, such as copper. Tungsten can be purchased online or from on-site companies who keep tungsten products in stock.
3
Compare prices of tungsten before ordering to ensure you are getting a good deal. If possible, compare the prices of local companies who sell tungsten with online companies. Once you decide upon the amount of the order, find out if there are any discounts for ordering a certain amount before purchasing.
4
Purchase the tungsten and use.
Tungsten Manufacturer & Supplier: Chinatungsten Online - http://www.chinatungsten.com
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How to Care for Black Tungsten
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- Published on Monday, 14 January 2013 15:47
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Black tungsten is a popular material for wedding bands. It is one of the hardest alloys available, often made of titanium and nickel as well as tungsten. A ring made of tungsten will not bend, scratch or break. Tungsten is ideal for those who don't want a flashy, shiny band, and it is very easy to care for. Many tungsten rings are polished by the manufacturer, and because of the hardness of the metal, polished tungsten will remain polished indefinitely.
Instructions
1
Clean your tungsten jewelry with a soft toothbrush and liquid soap whenever it seems to have blemishes. Tungsten can only be scratched by diamond or the mineral corundum, according to Titanium Jewelry. However, it can pick up materials and debris from things it rubs against.
2
Avoid using chemicals to clean your ring, and do not put it in an ultrasonic jewelry cleaner. These things can cause spotting.
3
Use a polishing cloth every so often if your black tungsten ring has a sterling silver inlay. The cloth will not harm the tungsten, and it will clean the silver effectively.
4
Look out for oxidation spots on black tungsten that do not go away when you clean it. If you see these spots, it means your ring contains cobalt, which reacts negatively with the human body. There is nothing you can do to avoid these oxidation spots, besides not wearing the ring. Always check that a tungsten ring does not contain cobalt.
Tips & Warnings
Rinse the soap off well to prevent itching before you put your tungsten ring back on.
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Conflict Minerals Worry Everence
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- Category: Tungsten Information
- Published on Monday, 14 January 2013 14:50
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Praxis talks with cellular service providers to address conflict in Congo
Everence
GOSHEN, Ind. — Praxis Mutual Funds, advised by Everence Capital Management, is working to end violence in the conflict minerals industry.
Praxis is a leading faith-based, socially responsible family of mutual funds. Everence, the stewardship agency of Mennonite Church USA, provides financial services to Anabaptists and others.
In the Democratic Republic of Congo, four minerals fuel illicit trade, civil war and forced labor — including child labor.
Tin, tantalum, tungsten and gold are critical for many common electronics products such as computers and cellphones. They are also known as “conflict minerals” for their central connection to some of the worst violence in the world.
Praxis is talking with major cellular service providers in the U.S. about the use of conflict minerals in cell phones. In an effort to end the conflict minerals industry, these discussions include talks about how the passage of the Dodd-Frank Act in 2010 — specifically, section 1502 on Conflict Minerals — can help companies find new ways to do business while also caring for global neighbors. This legislation requires companies to trace and disclose possible exposure to conflict minerals.
In April, Praxis staff attended a conflict minerals supply chain conference held by the Global e-Sustainability Initiative and the Electronics Industry Citizenship Coalition in Philadelphia. Participants learned how companies are addressing the issue, listened to reports about developments in Congo and heard updates on conflict mineral legislation.
The Securities and Exchange Commission, tasked with writing the regulations for section 1502, sought commentary. Praxis and others from the social and sustainable investment community provided input during this process. After two years of developing rules to govern implementation of section 1502, the SEC released regulations in August.
Praxis believes the rules are fair and will help address a humanitarian crisis in the Congo. Praxis is calling for the legislation’s full implementation in the face of escalating violence in eastern Congo.
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