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Oyaide’s rationale behind design and production of the SS-47 silver solder:-
“The SS-47 silver solder from Oyaide is the original high-fidelity solder, and was produced in order to maximise the capabilities of cables and connecters by eliminating any solder sound characteristic. After the careful consideration and research into the importance of the contact and joining area, we finally developed this specialised high-fidelity audio solder.
We have tried to maximise quality by always selecting best materials for our products; and there is no exception about this audio grade solder, SS-47. Compared to general solders, which usually contain 3N (99.9%) pure tin, SS-47 contains 4N (99.993%) pure tin - achieved by excluding impurities to the maximum. Furthermore, 4.7% silver and 1.7% copper are contained for the purpose of improvement of electric conductivity and durability.
As a result of our consideration of flux, it restricts corrosion of the surface and residual chlorine to less than 0.12%. In addition, by containing special material, the flux of SS-47 has 83% fast-spreading ratio which indicates great workability.
SS-47 is the ultimate solder with which to extract maximum performance from components and actualise stress-free craftwork. You can discover a new DIY life with it.”
You can learn more about Oyaide by using this link to visit their web site.