Lead Free Solder Bar
Highly Demanding Lead Free Solder Bar
Today, many tin solders are used, which are widely in demand in electronics, electrical engineering, automotive industry, as well as in the installation of climatic equipment. It should be noted that all tin solders are very inexpensive and practical to use, they are distinguished by high strength, ductility, thermal conductivity, and corrosion resistance. Suitable for brazing all non-ferrous metals and alloys.
General Characteristics solder Bar
The composition of tin solders includes such low-melting metals as tin, antimony, lead, alloyed with aluminum, zinc, cadmium, silver. Soldering strength reaches 8 kg / mm 2 and is directly proportional to the tin content in the solder.
The presence of antimony usually strengthens the solder joint. But this largely depends on the materials to be joined. When connecting pure copper - Sb increases the strength of the soldering point, when brass parts are soldered, Sb no longer has such an effect, and when iron is soldered, it reduces the strength of the soldering point.
Soft solders are supplied in the form of sticks, less often in the form of a wire with a flux placed inside it. A so-called paste can be used - it is a powdered solder mixed with a flux. However, it should be remembered that the use of paste is associated with a number of features. For example, zinc chloride is very hygroscopic and, if not removed from the soldering point, can cause corrosion.
It is forbidden to use ZnCl 2 or ammonia when soldering electrical measuring instruments, due to the danger of the appearance of copper on the copper wires of the instrument, which can cause distortion of readings and damage to the instrument. When brazing with tin solder, rosin is usually used as a flux
We supply certified tin solder of any brand. The specification includes data on the percentage composition and mechanical properties of the products. It is easy to wholesale any semi-finished products for large-scale production from us. We also partner with retail customers. A high level of service and efficiency of service are the face of our company.
Soft and hard solders
Solder is an alloy (filler material) for high-strength and reliable joining of metals, the melting point of which is higher than the melting point of the solder itself. According to their chemical composition, solders differ depending on the basic substance of which they are composed: tin, lead, cadmium, silver, antimony, bismuth, copper, zinc, nickel, etc.
The composition of the solder alloy depends on the technical parameters and size of the parts to be joined, and also the required melting point.
In the process of soldering, the solder is heated with a torch or a soldering iron and melted, and then it is applied to the cleaned joint surface of the metal and spreads over it, filling all the cracks and gaps.
Types of solders for soldering
The following solders for soldering are distinguished by the melting temperature:
- Soft solders - low-melting alloys with a melting point of up to 400 ° C. Soft solders include tin-based or lead-based solders with various impurities.
- Brazing alloys are high melting alloys with temperatures above 400 ° C. Alloys with a high content of silver and copper are used as hard solders. Thanks to the use of hard solders, the seams are highly durable and resistant to mechanical stress and high temperatures.
- Solder paste is a complex compound of solder, flux and binder.
Types of solders by chemical composition:
- Lead, lead-tin;
- Tin-copper, tin-silver;
- Copper-phosphorus, copper-silver-zinc;
- The aforementioned solders are the most common, in addition, the composition of the solder may include: antimony, selenium, zinc, bismuth, nickel, cadmium.
Our catalog contains hard solders (copper-phosphorus, copper-silver-phosphorus) in the form of rods and soft solders (lead-tin, tin-copper, tin-silver) in the form of wire. It is not recommended to use toxic solders containing lead or cadmium for soldering water pipes.
The advantages of using solder alloy:
- The shape and size of the elements to be soldered remain unchanged;
- Efficiency of work performance;
- Connection strength;
- Resistant to corrosion and environmental influences;
- Metals in various combinations can be connected by soldering;
For all questions related to the purchase of solders, please contact our managers at the specified phones. They will also tell you in detail about their properties and help you choose the most suitable names.
Get High Resistant Lead Free Solder Bar
As you know, zinc increases the corrosion resistance of brazed joints of aluminum alloys. The increased zinc content requires additives such as Ag or Cd. Solders having 10-40% Zn are usually used for tinning / brazing aluminum alloys by ultrasonic or abrasive methods. As the zinc content increases, the melting point of the solder rises.