General Purpose Silver Brazing Alloys - Thessco
The Thessco Group is one of the world’s largest manufacturers of Silver Brazing Alloys, Metal Joining Products and Industrial Silver Alloys.
Thessco Group, Silver Brazing Alloys, Metal Joining Products, Industrial Silver Alloys
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General Purpose Silver Brazing Alloys

These alloys are the optimum choice for a large range of industrial metal joining applications. The free-flowing properties of these 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 are silicon free and generally preferred by UK manufacturers.

Table 1

Thessco
Grade
ISO
17672:2016
Nominal Composition (%)Melting Range (°C)
SilverCopperZincTinSolidusLiquidus
H12Ag 2727228780780
M26TAg 1565622175.0620655
M25TAg 1555521222630660
M15TAg 145452725.52.5640680
M10TAg 1404030282650710
M8TAg 1383832282650720
M4TAg 134343627.52.5630730
M0TAg 1303036322665755
L18TAg 1252540332680760

This table details the equivalent silicon containing alloys that are generally preferred by European manufacturers.

Table 2

Thessco
Grade
ISO
17672:2016
Nominal Composition (%)Melting Range (°C)
SilverCopperZincTinSiliconSolidusLiquidus
CS114Ag 156Si5622175.00.15620655
CS111Ag 155Si55212220.15630660
CS91Ag 145Si452725.52.50.15640680
CS81Ag 140Si40302820.15650710
CS77Ag 138Si38322820.15650720
CS71Ag 134Si343627.52.50.15630730
CS61Ag 130Si30363220.15665755
CS51Ag 125Si25403320.15680760