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Experimental Plant of Quality Alloys
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TIN-LEAD SOLDERS

Alloy grade GOST Size, mm
Usage
Sn30Pb70 GOST 21930-76 5-10200600 For soldering: brass, copper, iron, zinc and galvanized sheets, tinplates, technical devices, radio equipment, flexible tubes and binding wires of electro motors
Sn40Pb60 For soldering: brass, iron and copper wires
Sn61Pb39 Used for low-temperature soldering. For example when one cannot overheat details while soldering extra slim wires, one should better use this solder, because it has a very high content of tin, which lowers the melting temperature of the solder.
Sn94Pb4
St2
For soldering: metals, tableware, medical equipment, radiators, and electric devices