Purchase of tin-lead solders
Solder PIC is a metal alloy used to join metal parts by melting solder.
Tin-lead solders- the most common group of solders. In labeling 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 operation and the scope of their application.
Solder seams are divided into several groups:
- dense and durable seams - withstand the pressure of gases and liquids;
- strong seams - able to withstand mechanical loads;
- tight seams - do not allow gases and liquids under low pressure to pass through.
The quality of soldering depends on the diffusion rate. Clean soldering surfaces increase diffusion. But if the metal surface oxidizes, diffusion sharply decreases or stops altogether.
Tin-lead solders must have both maximum viscosity and high resistance; the soldering method directly depends on the melting temperature of the solder.
Tin-lead solder POS60 widely used for soldering electrical equipment and radio components, printed circuits. The tin content of 60% ensures a low melting point, which averages 183-188 degrees Celsius.
Solder POS61 used when soldering thin parts, when overheating the parts is contraindicated.
Solder POS62 has the lowest melting point and contains 62% tin. This 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. Due to the small diameter of the wire, the exposure time of high temperature to lead-tin solder POS40 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 butt soldering it has high adhesive 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 POSC with cadmium;
- Tin-lead solders POS30 for tinning and soldering zinc sheets, radiators;
- Tin-lead solders POS40 for tinning and soldering of galvanized iron parts, 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 - coating 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 the connection of wires and radio components using solders in a molten state. After the tin-lead solder hardens, a strong connection is formed.
The more tin in the solder, the softer the solder. Solders containing pure tin are used for soldering internal seams of cookware for food products.
Purchase of tin-lead solders:
You can buy tin-lead solders POS and POSS in any quantities from the manufacturer - TINKOM LLC.At TINKOM LLC you can buy tin-lead solders:
Antimony-free solders
Low antimony solders
Antimony solders
Price for tin-lead solders
Prices for tin-lead solders different markings depend on the size of the ordered batch.
Wholesale purchases of tin-lead solders They are much cheaper than retail.
There is always a certain quantity in the warehouse of TINKOM LLC tin-lead solders which you can buy in our minimum 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 pigs, rods, wires.
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. The coatings are smooth and dark in appearance (terne - dull or matte (French)). Used to improve corrosion resistance and improve deformability, soldering or painting.
(Source: “Metals and alloys. Directory.” Edited by Yu.P. Solntsev; NPO “Professional”, NPO “Peace 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; i. industrie de plomo y cinc) sub-sector of non-ferrous metallurgy, uniting enterprises for the mining, processing of lead-zinc ores, production of metallic... ... Geological encyclopedia
Terne. See lead-tin alloy. (Source: “Metals and alloys. Directory.” 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 the metal tin, properties of tin, deposits and mining of tin, production and use of metal Contents Definition of the term History... ... Investor Encyclopedia
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 Occurrence in nature Properties Characteristic properties... ... Investor Encyclopedia
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 the simple substance silvery white soft, ductile metal (β tin) or gray powder (α tin) Atomic properties Atomic mass (molar mass) 118.71 a. e.m. (g/mol) ... Wikipedia
Bronze Bronze. A copper-tin alloy with small or no impurities of other elements such as zinc and phosphorus. The expanded range of bronzes includes copper-based alloys containing significantly less tin than other alloying... ... Dictionary of metallurgical terms
Lead- (Lead) Lead metal, physical and chemical properties, reactions with other elements Information about lead metal, physical and chemical properties of the metal, melting point Contents Contents Origin of the name Physical properties… … Investor Encyclopedia
Application for product/service
Lead solder used in soldering to combine several metal pieces into one product. In this case, the temperature at which the solder melts is always less than the melting temperature of the elements being combined.
You can buy lead solder from us. We work with grades of lead solder C1, C2, SSuA, presented in the form of cylinders, rods, 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 low fusibility. In its pure form, lead is a soft, easy-to-work material. When interacting with air, an oxide film forms on the surface of lead. The metal is highly soluble in acids and alkalis that contain organic matter and nitrogen. The melting point of lead solder with high chemical purity is 327.5°C.
When lead is heated, an oxidation process occurs, 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 into which oxygen and hydrogen from the air are supplied. In this case, there must be an excess amount of hydrogen.
Types of solders. Properties and characteristics
There are two types of solder - soft and hard. This classification is due to mechanical strength and melting point. Soft alloys for soldering include those whose melting point is less than 300ºC, and hard alloys - 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 the job depends on the type of metal (or metals, if they are different). In addition, corrosion resistance, required mechanical strength and cost are taken into account. If conductive workpieces act as metal parts, pay attention to the value of the specific conductivity of the solder.
Solders are most often called by the name of the metal that is contained in them in the greatest quantity. 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 named after this component. For example: silver.
For symbol solder use the Russian letter P (solder), then the capital letter of the name of the main components (in Russian) and their percentage.
The conventional name of the components looks like this: A - aluminum; Vi - bismuth; G - germanium; Zl - gold; In - indium; K - cadmium; Kr - silicon; N - 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 produced by industry are tin-lead (GOST 21931-76). Tin-lead materials for soldering that do not contain antimony are called antimony-free, and those that contain 1-5% antimony are called antimony.
All solders used for high-quality soldering must have wettability. Due to their low yield strength, solders made from lead are prone to creep. Metal creep is determined by the elongation of grains in a metal alloy or intergranular sliding. In order to block the sliding process along grain boundaries and limit their movement in the crystal lattice, silver and antimony are added to the 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 weakly 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 of solder with metals and reduce the temperature at which lead melts.
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 quantity 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 resistance.
Lead solders should contain a maximum of 5% antimony and zinc, up to 20% cadmium, and up to 30% tin. In some cases (for example, for lead soldering), the amount of antimony in the solder can be increased. This method is used for flame soldering of lead terminals for batteries using Pb -11% Sb solder, which has an increased antimony content. The solder's melting point drops (to 252°C), and its strength increases. This material for soldering, it has little plasticity; before starting the soldering process, it is introduced into the gap between the parts to be soldered.
Adding lead solder to the composition when connecting elements made of 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. To solder glass parts, a lead-based material with the addition of antimony and zinc is used.
Soft solders: lead-free (Sn+Cu+Ag+Bi+others), 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 of application: tinning of metals, when the requirements for soldering strength are not high. Melting point: beginning of melting 183°C, spreading 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. Beginning of melting 183°C, spreading 250°C.
POS-50 - includes from 49 to 50% tin, 0.8% antimony, from 49 to 50% lead. Area of application: radio electronics, high-quality soldering of various metals. Melting point: beginning of melting 183°C, spreading 230°C.
POS-90 - includes from 89 to 90% tin, 0.15% antimony and 10 to 11% lead.
Scope of application: tinning of parts for further silvering and gilding, high soldering strength. Melting point 180°C, spreadability 222°C.
In the radio-electronic industry, soldering materials 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, the composition of PMC-42 includes: 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 impurity content in them is 0.015% and 0.05%, respectively. Alloy C1 is characterized by high resistance and good ductility. Due to the latter quality, it is easy to melt and process.
Application of solders
POS-90. Scope of application: soldering internal seams of food utensils (pots, stewpans, etc.)
POS-40. Area of use: soldering of 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;
Parts of various instruments and equipment.
POS-18. Solders POS-18 and POS-40 are interchangeable. Application area for soldering:
Galvanized iron;
Parts made of lead, brass, copper, iron;
Tinning of 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 strength category, extends to live parts, elements of machines and mechanisms that are subject to high mechanical and temperature loads.
The tensile strength range for soft and medium-hard solders ranges from 50 to 70 MPa. They are used for soldering live parts that are not load-bearing elements of machines and mechanisms.
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