Purchase of tin-lead solders
solder pic is an alloy of metals used to join metal parts by melting solder.
Tin-lead solders- the most common group of solders. In marking tin-lead solders The letters indicate the composition of the solders; the numbers indicate the percentage of tin.
Main Components tin-lead solders are tin and lead.
Tin-lead solders can be very effective if you know the basic principles of work and their scope.
Solder seams are divided into several groups:
- tight and durable seams - withstand the pressure of gases, liquids;
- strong seams - able to withstand mechanical stress;
- tight seams - do not pass gases, liquids under low pressure.
The soldering quality depends on the diffusion rate. Clean surfaces to be soldered increase diffusion. But if the metal surface is oxidized, diffusion is sharply reduced or stops altogether.
Tin-lead solders must have both maximum viscosity and high resistance, the soldering method directly depends on the melting point of the solder.
Solder tin-lead POS60 widely used for soldering electrical equipment and radio components, printed circuits. The tin content of 60% provides a low melting point, which averages 183-188 degrees Celsius.
Solder POS61 used when soldering thin parts, when it is contraindicated to overheat the parts.
Solder POS62 has the lowest melting point, contains 62% tin in its composition. Such lead-tin solder is used to connect thin wires.
Solder POS40 avoids overheating when soldering. The cross section of tin-lead solder is thin, 1 or 2 mm in diameter. The time of action of high temperature on lead-tin solder POS40, due to the small diameter of the wire, is minimal. Solder POS40 similar to POSS4-6 solder in terms of strength. Tin solder is used for soldering copper, lead, iron, and tinplate.
Tin-lead solder POS30 used for soldering copper, brass, iron, galvanized, galvanized sheets, radio equipment, flexible hoses.
Solder POS18 when soldering end-to-end, it has a high soldering strength. Tin solder is used in cases where the melting temperature is not critical.
Solder POS90 widely used for soldering internal seams of food items.
Popular soft solders for soldering radio components - low temperature alloys:
- Tin-lead solders with antimony;
- Tin-lead solders POSK with cadmium;
- Tin-lead solders POS30 for tinning and soldering zinc sheets, radiators;
- Tin-lead solders POS40 for tinning and soldering parts made of galvanized iron, radiators;
- Tin-lead solders POS60 for soldering radio components;
- Tin-lead solders POS61 for soldering radio components;
- Tin-lead solders POS63 for soldering radio components;
- Tin-lead solders POS90.
By using tin-lead solders soldering work is carried out, two main operations are performed:
- tinning and
- soldering.
Tinning - covering metal surfaces with pure tin or an alloy of tin and lead with a small percentage of impurities - provides a strong connection and is a preparatory process for soldering parts.
Soldering is a connection of wires, radio components using solders in a molten state. After solidification of the tin-lead solder, a strong connection is formed.
The more tin in the solder, the softer the solder. Solders with a pure tin content are used for soldering the internal seams of food utensils.
Purchase of tin-lead solders:
You can buy POS and POSSU tin-lead solders in any quantities from the manufacturer - TINCOM LLC.At TINCOM LLC you can buy tin-lead solders:
Solders
Solders with low antimony
Solders antimony
The price of tin-lead solders
Prices for tin-lead solders different markings depend on the size of the ordered batch.
Wholesale purchases of tin-lead solders are much cheaper than retail.
In the warehouse of TINCOM LLC there is always a certain amount tin-lead solders which you can buy we have in minimal lines at the best price.
Do purchase of tin-lead solders you can by calling work time by contact numbers or by placing an order on the website.
Today we can buy tin-lead solders in the form of ingots, rod, wire.
At wholesale purchases of tin-lead solders preferential discounts are provided.
Lead-tin alloy Terne - Lead-tin alloy.
A lead alloy containing 3 to 15% Sn, used for hot dip coating of steel sheets or plates. Coatings are smooth and dark in appearance (terne - dull or matte (fr.)). It is used to improve corrosion resistance and improve the ability to deform, solder or paint.
(Source: "Metals and alloys. Handbook." Edited by Yu.P. Solntsev; NPO "Professional", NPO "World and Family"; St. Petersburg, 2003)
See what "Lead-tin alloy" is in other dictionaries:
- (a. zinc lead industry; n. Blei Zink Industrie; f. industrie du plomb et du zinc; and. industrie de plomo y cinc) non-ferrous metallurgy sub-sector, uniting enterprises for the extraction, processing of lead-zinc ores, obtaining metal ... ... Geological Encyclopedia
Turne. See lead-tin alloy. (Source: "Metals and Alloys. Handbook." Edited by Yu.P. Solntsev; NPO Professional, NPO Mir and Family; St. Petersburg, 2003) ...
Tin- (Tin) Metal tin, mining and deposits of tin, production and use of metal information about metal tin, properties of tin, deposits and mining of tin, production and use of metal Contents Definition of the term History ... ... Encyclopedia of the investor
Metal- (Metal) Definition of metal, physical and chemical properties of metals Definition of metal, physical and chemical properties of metals, application of metals Contents Contents Definition Finding in nature Properties Characteristic properties ... ... Encyclopedia of the investor
50 Indium ← Tin → Antimony ... Wikipedia
Tin / Stannum (Sn) Atomic number 50 Appearance simple substance silvery-white soft, ductile metal (β tin) or gray powder (α tin) Properties of the atom Atomic mass (molar mass) 118.71 a. e.m. (g / mol) ... Wikipedia
Tin / Stannum (Sn) Atomic number 50 Appearance of a simple substance silvery white soft, ductile metal (β tin) or gray powder (α tin) Properties of the atom Atomic mass (molar mass) 118.71 a. e.m. (g / mol) ... Wikipedia
Bronze Bronze. Copper-tin alloy with little or no other elements such as zinc and phosphorus. An extended range of bronzes includes copper-based alloys containing significantly less tin than other alloying ... ... Glossary of metallurgical terms
Lead- (Lead) Lead metal, physical and chemical properties, reactions with other elements Lead metal information, metal physical and chemical properties, melting point Contents Contents Name origin Physical Properties… … Encyclopedia of the investor
Application for a product / service
lead solder used in soldering to combine several metal blanks into one product. The temperature at which the solder melts is always less than the melting temperature of the combined elements.
You can buy lead solder from us. We work with brands of lead solder C1, C2, SSuA, presented in the form of cylinders, bars, ingots and wire. We supply other brands of solders: POS 30, POS 61, POS 40, POS 63 and many others.
The popularity of lead solder is due to its fusibility. In its pure form, lead is a soft, easy-to-handle material. When interacting with air, an oxide film forms on the surface of lead. The metal is highly soluble in acids and alkalis, which contain organic matter and nitrogen. The melting point of high purity lead solder is 327.5°C.
During the heating of lead, an oxidation process occurs, and so quickly that soldering is carried out in a reducing environment. It slows down the oxidation process and allows the solder to easily connect to the workpieces being soldered. The reducing environment is formed by a heating burner, which is supplied with oxygen and hydrogen in the air. In this case, there should be an excess amount of hydrogen.
Solder types. Properties and characteristics
There are two types of solder - soft and hard. This classification is due to mechanical strength and the value of the melting point. Soft alloys for soldering are those whose melting point is less than 300ºC, and hard alloys are more than 300ºC. The tensile strength of soft solders varies from 16 to 100 MPa, and for hard solders, respectively, from 100 to 500 MPa. The choice of solder for work depends on the type of metal (or metals, in the case when they are different). In addition, anti-corrosion resistance, the necessary mechanical strength and cost are taken into account. If conductive blanks act as metal parts, pay attention to the value of the specific conductivity of the solder.
Solders are often called by the name of the metal that is contained in them in the largest amount. For example: lead, tin-lead. And in the case when one of the components of the solder is a precious or rare metal, the solder is called this component. For example: silver.
For symbol solders use the Russian letter P (solder), then the capital letter of the name of the main components (in Russian) and their percentage.
The conditional name of the components looks like this: A - aluminum; Wee - bismuth; G - germanium; Zl - gold; Ying - indium; K - cadmium; Kr - silicon; H - nickel; O - tin; C - lead; Wed - silver; Su - antimony; T - titanium. Solders from pure metals are designated similarly to GOST for delivery. For example: C1 - lead, O2 - tin.
The most common soft solders manufactured by the industry are tin-lead (GOST 21931-76). Tin-lead materials for soldering, which do not contain antimony, are called antimony-free, and those containing 1-5% antimony are called antimony.
All solders used for high-quality soldering must have the wettability property. Due to the low yield strength, solders made from lead are prone to creep. The creep of a metal is determined by the elongation of grains in a metal alloy or by intergranular slip. In order to block the process of sliding along the grain boundaries and limit their movement in the crystal lattice, silver and antimony are added to the composition of lead solder. The need to use these elements for soldering has been known for a long time. They were used in POS-61, thereby reducing the tendency to creep.
Lead reacts poorly with many metals. Lead is insoluble in nickel, cobalt, zinc, iron, aluminum and copper at low temperatures. To improve the interaction of lead with these elements and their alloys, alloying components are added to lead, which accelerate the process of interaction between solder and metals, and reduce the temperature at which lead melts.
The alloying elements include: tin, silver, antimony, manganese, zinc, cadmium. At a temperature of 300°C, the solubility of these components in copper (a metal for which lead solder is mainly used) is respectively: zinc 35%, tin 11%, antimony 3%, cadmium 0.5%, silver 0.5%. Three components - zinc, tin and antimony react with copper. Therefore, their number must be clearly verified. An excess of these elements leads to the formation of a brittle layer of chemical compounds between the metal and the solder. This, in turn, reduces the static strength of the solder joint and its vibration strength.
Lead solders should contain a maximum of 5% antimony and zinc, up to 20% cadmium, up to 30% tin. In some cases (for example, for soldering lead), the amount of antimony in the solder can be increased. This method is used in the flame soldering of lead terminals for batteries using Pb -11% Sb solder, in which the antimony content is increased. The melting point of solder drops (up to 252°C), strength increases. This material for soldering, it is of low plasticity; before starting the soldering process, it is introduced into the gap between the parts to be soldered.
The addition of lead solder to the composition when connecting elements from copper and its alloys of silver and copper improves its technological properties. For soldering aluminum alloys, low-melting solders with a base of cadmium and lead are used. They give the solder increased corrosion resistance. For soldering glass parts, a material based on lead and additives of antimony and zinc is taken.
Soft solders: lead-free (Sn+Cu+Ag+Bi+etc.), tin-lead, tin-zinc, tin-lead-cadmium, antimony. Hard solders: silver, copper-zinc, copper-phosphorus, copper-nickel.
Characteristics of popular types of solder
POS-18 - includes from 17 to 18% tin, from 2 to 2.5% antimony and from 79 to 81% lead.
Scope: tinning of metals, when the requirements for soldering strength are not high. Melting point: onset of melting 183°C, flowability 270°C.
POS-30 - includes from 29 to 30% tin, from 1.5 to 2% antimony and from 68 to 70% lead.
Scope of application: soldering and tinning of steel and copper products, soldering of brass and shielding plates. Start of melting 183°C, spreading 250°C.
POS-50 - includes from 49 to 50% tin, 0.8% antimony, from 49 to 50% lead. Scope: radio electronics, high-quality soldering of various metals. Melting point: onset of melting 183°C, spreadability 230°C.
POS-90 - includes from 89 to 90% tin, 0.15% antimony and from 10 to 11% lead.
Scope: tinning of details for further silvering and gilding, soldering strength is high. Melting point 180°C, flow 222°C.
In the radio-electronic industry, materials for soldering are widely used: POS-40, POS-60. POSK-50, POSV-33, containing cadmium or bismuth, are used for tinning the surface of tracks on boards.
PMC-42 - includes from 40 to 45% copper, from 52 to 57% zinc. In addition, PMC-42 contains: iron (Fe), antimony (Sb), lead (Pb), tin (Sn). The temperature at which the material melts is 830°C.
PMC-53 - includes from 49 to 53% copper, from 44 to 49% zinc. The temperature at which it melts is 870°C.
SSUA is called a lead-antimony alloy. Its composition is determined according to GOST 1292-81 and includes: from 92.7 to 98% lead, from 2 to 7% antimony, copper up to 0.2%, arsenic up to 0.05%, beryllium up to 0.03%, tin up to 0.01%, iron up to 0.005% and zinc up to 0.001%.
Solders C1 and C2 are high purity lead alloys. The content of impurities in them is 0.015% and 0.05%, respectively. Alloy C1 is characterized by high resistance and good ductility. With the latest quality, it is easy to melt and process.
Solder application
POS-90. Scope of application: soldering the internal seams of food utensils (pots, stewpans, etc.)
POS-40. Scope of use: soldering copper, iron and brass wires.
POS-30. Scope of application for soldering:
Wires in bandages and hoses in electric motors;
Tin, brass and iron blanks;
Galvanized, zinc sheets;
Details of various devices and equipment.
POS-18. Solders POS-18 and POS-40 are interchangeable. Scope for soldering:
galvanized iron;
Lead, brass, copper, iron parts;
Tinning wooden elements before soldering.
POS 4-6. Analogue of POS-30. Scope of application:
For soldering tinplate, iron, copper;
For soldering riveted lock seams in lead elements.
The strength limit for hard solders varies from 100 to 500 MPa. The scope of their application, as materials of the 1st category of strength, extends to current-carrying parts, elements of machines and mechanisms that are subjected to high mechanical and thermal loads.
The limit of tensile strength for soft and medium hard solders is from 50 to 70 MPa. They are taken for soldering current-carrying parts that are not load-bearing elements of machines and mechanisms.
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