Soft soldering

Soft soldering is a metal joing technique that occurs at lower temperatures.

Soft and hard soldering solders

Soldering method^[1]	Type of solder	Melting temperature
Soft soldering	50% tin-30% lead-cadmium	145°C
Soft soldering	70% tin-cadmium-zinc	160°C
Soft soldering	3,5% gold-60% tin-lead	170°C-180°C
Soft soldering	Silver-tin (4% gold)	221°C
Soft soldering	Tin-antimony (95% tin)	223°C-240°C
Soft soldering	Cadmium-zinc (82,5% cadmium)	266°C
Soft soldering	Silver-cadmium-zinc (2% gold)	280°C-370°C
Soft soldering	Silver-cadmium-zinc (10% gold)	280°C-375°C
Soft soldering	Silver-lead (3% gold)	305°C
Soft soldering	Silver-cadmium (5% gold)	340°C-395°C
Hard soldering	Aluminium-13% silicium	577°C
Hard soldering	Aluminium-5% silicium	577°C-620°C
Hard soldering	Silver-cupper-zinc-tin-nickel	630°C-680°C
Hard soldering	Silver-cupper-zinc-cadmium-nickel	630°C-680°C
Hard soldering	Silver-cupper-zinc-tin	610°C-720°C
Hard soldering	Silver-cupper-zinc-cadmium	600°C-720°C
Hard soldering	Silver-cupper-phosphorus	625°C-780°C
Hard soldering	Silver-cupper-zinc	680°C-850°C
Hard soldering	Silver-cupper	780°C
Hard soldering	Cupper-phosphorus	714°C - 900°C
Hard soldering	Cupper-zinc-silicon-nickel	865°C - 950°C
Hard soldering	Cupper-zinc-silicon	865°C - 900°C
Hard soldering	Cupper-zinc	865°C - 900°C
Hard soldering	Silver	961°C
Hard soldering	Gold	1060°C
Hard soldering	Cupper	1080°C

-->Note "fluxes" column needs to be integrated, ie when using tin, pine resin is used as flux.