Hello. 

Received a present, a 20 lb solder wire roll of 89.5% Sn;  10.0% Sb; and 0.5% Cu.  Does anyone know what is intended to solder ?  Radiators... electrical... plumbing... ?

12 minutes ago, Externet said:

Hello. 

Received a present, a 20 lb solder wire roll of 89.5% Sn;  10.0% Sb; and 0.5% Cu.  Does anyone know what is intended to solder ?  Radiators... electrical... plumbing... ?

From a brief web search I think this is for electrical uses mainly, where there is no mechanical stress on the joint.

1 hour ago, Externet said:

Hello. 

Received a present, a 20 lb solder wire roll of 89.5% Sn;  10.0% Sb; and 0.5% Cu.  Does anyone know what is intended to solder ?  Radiators... electrical... plumbing... ?

I think you will find that  copper - tin -antimony solder is mainly for the plumbing indistry since its three main properties are that it solders well to copper and brass but has relatively low electrical conductivity and is poison (lead) free).

This mixture is usually sold without incorporated flux, unlike reels of electrical solder.

Does your incorporate flux?

 

https://www.amazon.co.uk/AIM-Solder-5167-Aquasol-B0B94M73NC/dp/B0B94M73NC

https://www.copper.org/environment/water/e_p_lead.html

https://www.waterregsuk.co.uk/downloads/public_area/guidance/publications/general/april_2021/9-04-02-soldersfluxes-v3-1web-_apr2021_.pdf

Edited July 5, 20241 yr by studiot

Thanks, studiot.  No flux incorporated, solid not hollow wire.  Melts correctly with my plain typical soldering iron for electronics work. Unable to find data about it.   Highly likely sourced from a local Sylvania incandescent light bulb factory that closed doors.

While searching, noticed a trend from solder manufacturers on not telling the alloy contents but christening it with a letter soup to identify their product.  Interesting how they have had open formula information to the competitors before.

--->  https://buy.solder.com/product/5-Solder-Alloys-Wire-Kit/