Furtech Betterment type S-070 solder. 4% Silver and 96% Tin. 5 core and 362 flux. Diameter of 0.70mm.
Ideal solder iron temp: 420C for 15 seconds.

Highest fine quality silver content in the market. Xsymphony Blue Diamond 5% Silver Solder (1.0mm Dia.) with flux that protects against etching of surfaces resulting in long term stability and corrosion resistance. Ideal low melting temperature. Available in 15 grams packs (appx. 9ft long).

Silver/Gold is added in the M-SOLDER and the M-SOLDER Supreme which itself is a pure tin copper compound. Silver is used for better conductivity and retaining superior sound qualities. Gold is applied to safeguarding the sound properties.

M-SOLDER Silver/Gold is always used where it is necessary to guarantee the excellent sound properties of the Mundorf Silver/Gold components.

M-SOLDER Supreme solder guarantees the ambitious user of the Mundorf Silver/Gold products, with its even higher Silver/Gold content giving a correspondingly and uncompromisingly good solder connection.

M-SOLDER Specifications: 95.5%Sn/0.7%Cu/3.8%Ag/0.038%Au 217C/422F
M-SOLDER Supreme Specifications: 88.6%Sn/1.8%Cu/9.5%Ag/0.1%Au 290C/554F

(AgAu=99%Silver1%Gold) - 1mm Dia. - 2.5% Flux - Lead and Cadmium Free