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Solder alloy


A solder is a metal or alloy that is used in the molten state to join metal parts. The melting point of the solder should be lower than that of the items to be assembled. Later, when it cools, it will give a strong connection.

Percentage Solder Composition

Solder Sn Sb Pb
Potsu-40-2 39 - 41 1.5 to 2 Basis
POSU-30-2 29 - 31 1.5 to 2 Basis
POS-40 39 - 41 0.005 to 0.5 Basis
POS-61 60 - 62 0.005 to 0.5 Basis
POS-30 29 - 31 0.005 to 0.5 Basis

The most popular tin-lead solders are of the PIC grade. The numerical value: 30, 40, 61, etc. reflects the percentage of tin in the alloy.


When installing couplings with the use of POS perform connection of cable cores, metal cable sheaths with aluminum, lug ends, lead or brass couplings, make grounding of metal sheaths, shields, cable armor according to GOST 1499-70.

- POS 40 - soldering of brass, iron and copper wires.

- POS30 - soldering of brass, copper, iron, zinc and galvanized sheets, white sheets, radio equipment, bandage wire of electric motors and flexible hoses.

- POS 61 - filigree soldering of the thinnest wires. High tin content lowers melting point of solder.

According to TU 48-0220-62-94 solder grade ПОС36 contains: zinc - 63%, tin - 36%. It is used to make terminations of ferrules, soldering cable cores, it is soldered to metal cable sheaths with lead, brass and aluminum sleeves; ground shields, sheaths and armor cables.

solder Application:
POS61. For tinning and soldering of electrical and radio devices, precision equipment with high tightness seams, printed circuit boards which do not allow overheating. Without antimony.
POSK2-18. Soldering and brazing of ceramic and metallized parts. Without Sb.
POWSK50-18 Processing of powder materials, parts which are sensitive to overheating of ceramic-metal, as well as for step soldering of capacitors. Without Sb.
PIC40 Soldering and tinning of galvanized sheet metal parts with sealed seams and electrical appliances. Without antimony.
POSSU25-05. Soldering and tinning of radiators. Contains traces of antimony, good for soldering galvanized and zinc parts.
POSSu95-5. Used in electrical industry for soldering of pipelines designed for heating. Contains antimony.
POM2. Low-temperature, soft soldering. A high-melting-point solder.
PIC30. Available in pig iron wire and round rods which are filled with flux tubes and powder. Without antimony.
POSSU18-05. For tinning and soldering of tubes in heat exchangers and electric lamps. Good for soldering zinc and galvanized parts. Contains antimony traces.
POSSU25-2. Used in automotive applications. Contains antimony.
POSSu8-3 Light bulb industry. Contains antimony.
POS10 Manufacture of contacts for electric appliances and relays, as well as for tinning and filling of control plugs for locomotive engines. Does not contain antimony.
POSSu18-2. Used in automotive industry. Contains antimony.
POSSu40-2 Used for tinning and soldering of refrigerator parts and thin sheet packaging. Contains antimony. Solder for a wide range of applications.
POSSu10-2 Used in automotive industry. Contains antimony.
POSSu15-2 Used for automotive applications. Contains antimony.
POSSU50-05. For tinning and soldering of aviation radiators, soldering of household utensils with further tinning using food grade tin. Contains antimony traces, excellent for soldering galvanized and zinc products.
POS61M For tinning and soldering of very thin (up to 0.2 mm) parts: foil, copper wire, printed circuit boards in jewelry and electronic industry. Antimony free. Soldering and brazing in baths and crucibles is not allowed.
POSSU35-05. For tinning and soldering of cable lead sheaths, electrical and not especially critical products and thin-sheet packing. Contains antimony traces, excellent for soldering galvanized and zinc parts.
POSSU61-05. For tinning and soldering of all elements of printed circuit boards, electric equipment, electric windings, as well as zinced radio components with toughened requirements to the temperature. Contains traces of antimony, perfectly performs soldering of zinc and galvanized products.
POS63. Printed circuit soldering, wave soldering, dipping with pull-through on automated lines.
POSSu4-4 Used in automotive industry. Contains antimony.
POSSU5-1. Use for tinning and soldering of parts that work in heat conditions and for tinning of tubular radiators. Contains antimony.
POSS90 Treatment of internal seams of medical equipment and household utensils. Without antimony.
POSSU30-2. Tinning and soldering of cooling circuits, in automobile industry, electrical bulbs and abrasive soldering. Antimony in the composition.
POSSU4-6 Used for soldering of tinplate, tinning and soldering of parts that have rolled and riveted seams of copper and brass, for puttying of car bodies. The presence of antimony in the composition.
POSSU30-05. Used for tinning and soldering of zinc sheets and radiators.
POSSU-40-05. Designed for tinning and soldering of tin sheets, electric windings, soldering of assembly parts, cable and coil products, galvanized parts, radiator tubes and refrigeration systems. Contains traces of antimony, excellent for soldering zinc and galvanised parts.
POSSU35-2. Soldering of lead pipes, abrasive soldering. Presence of antimony in the composition.


Where to buy solder in bulk or in installments? Supplier "Auremo" offers to buy solder today on favorable terms. A large selection in stock. Conformity with GOST and international quality standards. Always in stock solder series ПОС, ПОССу, the price - the best from the supplier. Buy solder today. Wholesale customers price - favorable.

Buy a bargain price.

Supplier "Auremo" offers to buy solder on favorable terms. The warehouse offers the widest range Always in stock series POS, POSSU, the price - due to technological features of production without the inclusion of additional costs. The company's website shows the most current information about products, there is a product catalog and price lists. The price is the best in this segment of rolled steel. Find us easily on the Internet. Supplier "Auremo" invites to buy solder in bulk or in installments. In the segment of non-ferrous alloys, Auremo is a profitable supplier. Buy solder today. Quality meets GOST and international standards. The best price from the supplier. We are waiting for your orders.

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