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Ag
Argentum

History

 
Silver one of precious metals, that is known by people since ancient times. Silver uses in many spheres of human life, namely: producing   jewelry, medicine, technology.  It doesn`t have pioneer, because people don`t  have to obtain it from ore. Silver used for mirrors that was one of the first of its applications. Silver solders were also known in antiquity. The ability of silver to reflect light well used so far in the spotlight. Silver mirrors have even on satellite.


Nowadays


From an engineering point of view, silver, like gold, long considered a useless metal, practically does not affect the development of technology, more precisely, almost useless. Even in ancient times it had used for soldering. However, if we open a modern guide to the materials, then we'll find a few silver solders: the AKP-10, AKP-12, AKP-25 figure indicates the percentage of silver (the rest of copper and zinc 1%). In this technique solder occupy a special place, because soldered suture is not only durable and flesh, but also corrosion resistant. The higher requirements for strength and corrosion resistance brazed seam, the high percentage of silver used soldering. In some cases, use solder with 70% silver. Only silver uses in titanium soldering.
The value of silver solders in the technique has been steadily growing. This can be seen in the recently published data. They pointed out that the U.S. only for this purpose is spent to 840 tons of silver a year.

Date ASIA EUROPE USA
26/12/2009 18.18 17.47 17.51
19/12/2009 18.04 17.4 17.27
12/12/2009 18.04 17.5 17.04
05/12/2009 18.5 18.82 18.47
28/11/2009 18.76 19.08 18.73
21/11/2009 18.5 18.2 18.51
14/11/2009 16.7 17.13 16.96
07/11/2009 16.96 17.41 17.23
31/10/2009 16.55 16.98 16.81
24/10/2009 16.88 17.32 17.14
17/10/2009 17.54 17.54 17.54
10/10/2009 17.54 17.6 17.7
02/10/2009 16.59 16.95 16.78
25/09/2009 16.63 16.75 16.2
18/09/2009 16.49 16.93 16.76
12/09/2009 16.47 16.9 16.73
05/09/2009 16.55 16.98 16.81
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