Solder POS 90

Solder

POS 90rod, provoloka UAH/cmdiameter in mm: 2,3,8
to know more about the offered goods, and additionally to discuss price, terms of delivery and payment is a qualified Manager. Sergey Fedorovich

 

 

 

POS 90 rod, wire, 220 UAH/kg Diameter in mm: 2,3,8.

 

 

 

 

 

 

 

 

Solder is a metal or alloy used for brazing to connection of the workpieces and having a melting point lower than the joined metals. Apply alloys based on tin, lead, cadmium, copper, Nickel and other

Soldering carry out or to create a mechanically stable (sometimes sealed) seam, or to obtain electrical contact with the small the transfer resistance. When soldering the connections and solder heat up. Since solder has a melting point significantly lower than connect the metal (or metals), it melts, while the base metal remains solid. On the boundary of contact the molten solder and the solid metal there are various physico-chemical processes. The solder wets the metal spreads over him and fills the gaps between the joined parts. The components solder is diffused into the base metal, the base metal is dissolved in the solder, resulting in the formation of the intermediate layer, which after solidification connects the parts together.

Choose the solder with the physical and chemical properties of connected metals, the desired mechanical strength of the junction, its corrosion sustainability and cost. When soldering live parts must to take into account the conductivity of the solder.

Classification solders

Solders can be divided into two groups: hard and soft. Soft include solders with melting temperatures up to 300 °C, the solid - higher 300 °C. in Addition, the solders vary significantly in mechanical strength. Soft solder alloys have tensile strength tensile 16-100 MPa, and solids - 100-na.

Soft solders are tin-lead alloys (PIC) content tin of 10 (POS 10) to 90% (POS 90), the rest of the lead. The conductivity of these alloys is 9-15% pure copper. The melting of these solder begins at a temperature of 183 ° C (eutectic temperature of the system tin-lead) and ends at the following temperatures:

POS - 280'C.

PAS - 260'C.

POS - 247'C.

POS - 235'C.

POS - 220'C.

Solder POS 61 and POS-63 melt at a constant temperature 183', because their composition is almost identical with the composition of the eutectic tin-lead. In addition to these compounds as soft solders are used also:

• antimony solder (Poss) used when soldering galvanized and zinc products and high strength requirements soldered connections,
• tin-lead-cadmium (PQS) for soldering components sensitive to overheating and soldering the pins to capacitors and piezoelectric ceramics,
• tin-zinc (OC) for aluminum brazing,
• lead-free solders containing along with tin, copper, silver, bismuth and other metals.

The most common solid solder is a copper-zinc (PMC) and silver (RPS) with various additives.

The melting temperature of the AKP and PMC:

PSR - 830'S.

PSR - 785'S.

PSR - 765'S.

Pcr45 - 720'S.

PCR 65 - 740'S.

PSR - 780'S.

PMC - 825'S.

PMC - 833'S.

PMC - 870'S

The advent of hybrid technology to create e-cards led to the emergence of a new type solders: the so-called soldering pastes suitable for both conventional and stencil soldering hybrid schemes. Solder paste represent complex dispersion in which the dispersed phase are micro - and nano-sized particles of solder and, perhaps the solids flux and dispersion medium are liquid components of the flux and volatile solvents.

Due to increased public attention to environmental issues now the choice of solders more seriously consider the toxicity of its components. In electrical and electronics (especially in the household) are increasingly being used lead-free solders.

 

Buy tin and solder in Ukraine

 

• Price: 220 UAH./kg