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

Soft and hard soldering solders[edit | edit source]

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.

External links[edit | edit source]

Complete list:

References[edit | edit source]

  1. Technologie van het lassen by Gilbert Declerck, Hugo Thoen