Question

Which alloy is used for welding?

Answer 1

Welding is a fabrication method for joining materials, typically metals or thermoplastics, by melting them together and allowing them to cool, resulting in fusion. Welding differs from lower-temperature wire-joining processes like brazing and soldering in that welding does not heat the base metal.

Complete answer:
Welding is a fabrication method for joining materials, typically metals or thermoplastics, by melting them together and allowing them to cool, resulting in fusion. Welding differs from lower-temperature wire-joining processes like brazing and soldering in that welding does not heat the base metal.
Pressure may be used alone or in combination with heat to create a weld. Welding often necessitates the use of a mask to prevent contamination or oxidation of the filler metals or molten metals.
Solder is a lead-tin alloy with a low melting point that is used for welding.
A fusible metal alloy called solder is used to form a permanent bond between metal workpieces. Solder is heated to bind to and link the pieces until they have cooled, which necessitates the use of a solder alloy with a lower melting point than the pieces being connected. The solder should also be immune to oxidative and corrosive damage, since this will cause the joint to deteriorate with time. The solder used to make electrical contacts must also have good electrical properties.

Note:
A fusible metal alloy called solder is used to form a permanent bond between metal workpieces. Solder is heated to bind to and link the pieces until they have cooled, which necessitates the use of a solder alloy with a lower melting point than the pieces being connected. The solder should also be immune to oxidative and corrosive damage, since this will cause the joint to deteriorate with time. The solder used to make electrical contacts must also have good electrical properties.