Our silver-based brazing alloys provide an ideal solution for high-quality brazing. They are offered in various formats to meet specific welding needs.

Our brazing products include:

  • Brazing Alloys
    • Cadmium-free Silver Based Alloys
    • Copper Phosphorus
    • Copper Phosphorus Silver Alloys
    • Aluminium Alloys
    • Brass Alloys
    • Soft Solder
  • Trifoils and Foils for Tooling and Electrical Applications
  • Rings and Preforms
  • Flux

Brazing alloys sare the optimum choice for a large range of industrial metal joining applications. The free-flowing properties of our brazing alloys, coupled with good joint strengths means that they find use when joining dissimilar parent metals (e.g. stainless steel, mild steels, brasses, bronzes and copper) in a wide range of environments, from industrial cooling to food and pharmaceutical manufacture.

The use of a suitable flux for the parent metal / brazing alloy combination is a requirement for these alloys.

The table below details the alloys that contain silicon and generally preferred by European manufacturers.

Thessco Grade ISO 17672:2016 Nominal Composition (%) Melting Range (°C)
Silver Copper Zinc Tin Silicon Solidus Liquidus
CS114 Ag 156Si 56 22 17 5.0 0.15 620 655
CS111 Ag 155Si 55 21 22 2 0.15 630 660
CS91 Ag 145Si 45 27 25.5 2.5 0.15 640 680
CS81 Ag 140Si 40 30 28 2 0.15 650 710
CS77 Ag 138Si 38 32 28 2 0.15 650 720
CS71 Ag 134Si 34 36 27.5 2.5 0.15 630 730
CS61 Ag 130Si 30 36 32 2 0.15 665 755
CS51 Ag 125Si 25 40 33 2 0.15 680 760

The table below details the equivalent alloys which are silicon free and are generally preferred by UK manufacturers.

Thessco Grade ISO 17672:2016 Nominal Composition (%) Melting Range (°C)
Silver Copper Zinc Tin Solidus Liquidus
H12 Ag 272 72 28 780 780
M26T Ag 156 56 22 17 5.0 620 655
M25T Ag 155 55 21 22 2 630 660
M15T Ag 145 45 27 25.5 2.5 640 680
M10T Ag 140 40 30 28 2 650 710
M8T Ag 138 38 32 28 2 650 720
M4T Ag 134 34 36 27.5 2.5 630 730
M0T Ag 130 30 36 32 2 665 755
L18T Ag 125 25 40 33 2 680 760