All about technical silver

Silver is not the most common element used for making jewelry and accessories, but it is an important material in the creation of radio-technical devices. This metal, which is used in the industrial sector for the manufacture of devices and technical components, is commonly referred to as "technical".

Technical silver is a substance that contains about twenty alloys. It has a number of features that distinguish it from other elements:

• quite high thermal and electrical conductivity;
• solidity and resistance to destruction;
• elasticity and relative softness;
• ability to reflect light;
• staticity to inert reagents;
• low melting point.

It is these details that characterize demand for technical silver in various industries... Its physical and chemical properties, such as a long period of use and anti-corrosion, form a wide range of applications.

In pawnshops, the price for one gram of such metal will be about thirty rubles.

An important feature of technical silver is high level of alloy purity - 99.9%... In this case, the amount of all kinds of impurities is equal to 0.1%. But it should be noted that, unlike jewelry silver, the main function of this metal is not aesthetics, but importance for the manufacture of radio engineering.

Considering this insignificant percentage of impurities, we note main components: nickel, copper, gold, etc. Most often used on pure metal 999 standard, but if it contains more than 10% copper, then the sample will already be 800. And with a high content, the metal can acquire a yellowish tint, but at the same time it becomes much stronger.

Fineness 830 indicates that the impurities are 170 grams, and the remaining 830 grams is silver itself. This metal is mainly used for decorative purposes (when creating various jewelry or accessories). This element is widespread in the manufacture of household utensils (silver glasses, cups, spoons, forks, etc.).

Silver with breakdown 875 is a white alloy and still not suitable for jewelry making. Most often used in bracelet and watch cases. In this metal, the amount of additives limits its susceptibility to any physical damage.

As you know, it is silver 925 products ideal for making jewelry. The metal contains silver and copper in the following proportions: 92.5% and 7.5%, respectively.

Well the composition of technical silver is characterized by the highest purity of the metal and practically no impurities... It is these parts that are flexible and soft, therefore, are of great importance in the manufacture of radio-technical devices.

1. this metal "transparent", without numerous additives, due to which, in contrast to the jewelry counterpart, it is capable of excellent thermal and electrical conductivity, light reflection, which makes it possible to produce parts for all kinds of equipment.
2. a significant criterion is a test. When creating various jewelry or accessories, a high standard is in no way suitable, since the main task of this element is to create durable, reliable products that will serve you for a long time. And the technical version, as noted above, is very soft and flexible.
3. as we already know industrial silver contains only 0.1% additives, which means that in order to check whether it is real, you will need to know some key points. You can drop vinegar on any part - the oxidation process must take place. Or a drop of iodine will help you, after which the metal will darken. This means that the item contains a high percentage of pure silver.
4. And finally, despite the fact that the amount of impurities is quite low, nevertheless some elements distinguish this metal from jewelry... For example, the presence of nickel can cause an allergic reaction and itching. And earrings containing this substance can lead to more serious consequences.

Thus, there are a number of key points that will help you distinguish technical silver from the material that serves as the basis for all kinds of jewelry and accessories.

Where is the most technical silver found? It is also present in modern devices, but in large volumes - only in Soviet equipment. All precious metals contained in the parts were pure. The strictest records were kept behind them, since they were of great value.

The precious metal is found in such devices and parts known to us:

• photographic films and x-rays;
• wires in the aviation industry and mechanical engineering;
• microcircuits, chips, contacts, plugs, sockets;
• cases of radio and electrical devices, their parts;
• accumulators, switches, switches.

Technical silver has a number of physical and chemical characteristics that make it suitable for use in manufacturing radio equipment. As mentioned above, the level of impurities in the metal is practically zero, however, to improve its utilization, nickel, copper, lead, etc. are added. This element has become widespread in the production of solders.

In the event that the amount of silver dominates, then such strong and anti-corrosion connection... With a high copper content, it can undergo deformation and destruction. An alloy of palladium with a technical metal is significantly superior to the above example. Due to the presence of sulfur in their compound characterized by resistance to corrosion and less susceptibility to bending.

Do you want to cleanse silver from impurities with your own hands in order to get pure metal, but do not know how to do it correctly? We will offer you an algorithm of actions to be followed.

Since there is no such laboratory equipment at home, there are still other ways to isolate these additives.

1. Necessary break the metal into tiny pieces and then process it with nitric acid... Be sure to adhere to safety rules when working with chemicals, ventilate the room so as not to get poisoned. It is necessary to mix the reagent with the metal step by step until complete dissolution. If you end up with a bluish tint, this indicates that it contains copper.
2. A substance like sodium sulfate can help you determine the presence of lead in its composition... After the experiment, the lead should precipitate.
3. Copper can be identified using ammonia, which will color it in a pronounced green color. It is important to note! When looking for additives inside the precious metal, use new pieces each time in order to avoid all kinds of errors.
4. Then separating silver from copper... The resulting sediment must be filtered to a dry consistency, and then melted. Thus, the silver particles will undergo a process of decomposition to metal, while the rest of the elements will become oxides.

It is known that well-refined precious metal is more expensive than classic scrap. Therefore, your work will be accurately appreciated. But be aware that this procedure is very difficult to do the first time, as it requires professional dexterity and skills.

In conclusion, we can say that technical silver is not an ordinary metal. It has a number of features that distinguish it from silver jewelry. Despite the fact that this element was very widely used in the manufacture of Soviet devices, it retains its popularity today.

An overview of the most expensive contacts in the world is presented in the video.