Military tungsten alloy swaging rod is made of tungsten alloy rod through calcinations. The normal method used in the processing are extruding, forging and sintering. After calcinations, tungsten alloy swaging rod has higher ductility, toughness and tensile strength than tungsten alloy rod, so it can be used for a longer time. Military tungsten alloy swaging rod can be used for S-25.

The S-25 Berkut  is a surface-to-air guided missile, the first operational SAM system in the Soviet Union. Its NATO reporting name is SA-1 Guild. It was used only to defend Moscow, while the more mobile S-75 (SA-2 Guideline) would be used in almost all other roles. Other names include the R-113 (target acquisition radar), B-200 (target engagement radar), A-11/A-12 (antennas for B-200), and V-300 (a SAM); S-25 is for Systema 25, referring to the system as a whole.

With military tungsten alloy swaging rod, S-25 can destroy aircrafts effectively, for its high density, excellent hardness and superior ultimate tensile strength.



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The most valuable precious metals become, the more vulnerable they become to counterfeiting. Those who collect gold coins as insurance in uncertain economic times and those who collect them as a hobby must have a practical method for identifying gold coins and differentiating them from even the best of fakes. With a few basic techniques and tools, you can spot fake gold coins.

1.Look at the coin. Real gold coins have a distinctive yellow, dull but golden shine. Coins that are gold mixed with a cocktail of other metals often have a gold tinge, but they also have other colors, such as copper, so the overall appearance is somewhat coppery.

2.Place the coin on the concave end of a Fisch tool. The Fisch will calculate the density of the coin in grams per cubic centimeter. Because gold has an immutable density, a fake gold coin is likely to be significantly lighter for its diameter. The Fisch tool will help you determine that.

3.Drop the coin on the hard surface of a table. A gold coin will make a distinctive chime, whereas a coin mixed with other metals will simply produce a dull thud. Ideally, you should have a coin that you know is gold to compare to the coin in question.

4.Scratch the coin on a rough surface, and examine the color of the coin beneath the outer layer. If it's a different color, then you have a gold-plated coin.

5.Place a magnet near the gold coin. A pure gold coin will not be attracted to the magnet. A fake gold coin, which is a medley of other metals, will gravitate toward the magnet.

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Issued in one ounce, half-ounce, quarter-ounce and tenth-ounce sizes, gold eagles (or more accurately American Eagle Gold Coins) are 22 karat (.916 fine) coins struck at the West Point Mint and forged from gold mined in the United States. They are available in three formats: bullion, proof and (since 2006) uncirculated. Since their introduction in 1986, gold eagles have been a hit with investors, with over 13 million of the one-ounce bullion coin being distributed as of November 2010. Gold-plated reproduction eagles have appeared on Internet auction sites, but collectors should have little difficulty in distinguishing these from the genuine article

1.Examine the coin to see if it has the word "copy" stamped upon it in tiny letters. This appears on the more honest of the reproductions.

2.Use a jeweler's loupe to scrutinize the design (Liberty striding forward, by Augustus Saint-Gaudens, the same image that appeared on the double eagle of 1907). Liberty's gown and hair should be crisply realized, especially on the proof and uncirculated coins, which are made with multiple strikes to achieve a meticulous finish. No gold-plated reproduction can hold that degree of detail.

3.Weigh the coin on a pair of digital scales. Every gold eagle bears a denomination expressed as weight in ounces. Make sure that the denomination and the actual weight match up. On fakes, they won't.

4.Look carefully at the accompanying documentation and packaging. Proof and uncirculated gold eagles should be sealed within plastic capsules mounted in satin-lined velvet presentation cases. Each has a certificate of authenticity. The only avenue for bullion gold eagles to be sold to the public is through an authorized dealer. Check if the current owner is such an authorized person, or has a bill of sale from one.

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In the past, the richer individuals of society showed off their wealth with large estates, fancy cars and box seats at the big game. In more recent times, some wealthy people purchase golden teeth molds. Others actually plate their teeth with gold and implant small diamonds on the center of each tooth. Fortunately for those without extravagant amounts of money to spend on fancy dental enhancements, there is a way to sport golden teeth without spending a fortune.

1.Pull out a sheet of golden aluminum foil.

2.Cut the foil into strips that measure 1.5 inches by 6 inches.

3.Take one strip and place one of the long edges along your upper gum line.

4.Fold the gold strip under your upper teeth and press any remaining foil against the roof of your mouth.

5.Press the foil against your upper teeth. Pinch the foil between each pair of teeth to give it a more natural look. Tear the foil to remove any excess on the ends.

6.Place the long edge of another strip of foil along your lower gum line.

7.Fold the gold strip over your lower teeth and press any remaining foil against the floor of your mouth. Take care not to irritate the bottom of your tongue. Remove any foil as necessary.

8.Press the foil against your lower teeth. Pinch the foil between each pair of teeth to give it a more natural look. Tear the foil to remove any excess on the ends.

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