Lead Free Solder

[Brasso]

I have a roll of lead free solder that the label is almost unreadable. From what I can read: Wolverine, 95.6% Tin, 4% Copper and .4% unknown (can't read). Can someone fill in the blank? Thanks in advance.

[farmbif]

whatever the 0.4% is it isn't going to effect anything when it is used to add tin to pure lead or some other bullet casting alloy. the 4% copper adds strength and hardness but yet again if you need to add tin to your alloy to get good mold fill out that lead free solder its perfect.

[Brasso]

Thanks for the info.

[Winger Ed.]

It might be antimony, but whatever it is, it isn't enough to matter for what you're doing.
Perhaps it makes manufacturing it easier or better, but don't worry about it.

[Polymath]

I have a roll of lead free solder that the label is almost unreadable. From what I can read: Wolverine, 95.6% Tin, 4% Copper and .4% unknown (can't read). Can someone fill in the blank? Thanks in advance.

https://www.brazing.com/Pdf/MSDS/MSDS_Leadfree_Solders.pdf

[Dusty Bannister]

Could be this one.

https://www.chegg.com/homework-help/questions-and-answers/solder-contains-95-tin-4-copper-05-silver-melting-point-219-c-creep-melting-point-04-find--q96314682

[LAGS]

When I worked in construction.
I use to find left over rolls of lead free solder that were left by the plumbers.
I just treated it like it was pure Tin when I made up my lead alloys.
It worked great.

[BNE]

Agree with others that it is not enough to matter. My guess would be silver.

[dtknowles]

whatever the 0.4% is it isn't going to effect anything when it is used to add tin to pure lead or some other bullet casting alloy. the 4% copper adds strength and hardness but yet again if you need to add tin to your alloy to get good mold fill out that lead free solder its perfect.

On the stuff I have the .4 % is silver. Nice but amounts to nothing in the final alloy even in 20 to 1 you end up with 95.2 lead, 4.6 tin, 0.2 copper, and 0.02 silver. Unless your pure lead is really pure the copper and silver are less than the impurities in the pure lead. Same deal if you are making Lyman #2 just treat the solder like it is pure tin. The copper and silver are just too small to matter. I like copper in my alloy, but you have to work hard to get enough to matter unless you buy copper babbit.

[ulav8r]

Silver is a good bet. I found Wolverine Brass solder at several sites. This one had the best price of the ones I looked at. Shipping was $12 for 1 to 4 rolls, but 5 rolls would get free shipping. https://www.citibestsell.com/product/Wolverine-Brass-Lead-Free-Solder-1-Lb-Pound-54037-Silver_tlv275a75495763.html

[Brasso]

Thank everyone for their replies. Now I know what to do with this.

[Rickf1985]

Solder pipes?

[Winger Ed.]

Solder pipes?

It's required now days for all Copper tubing that has drinking water in them.

[Rickf1985]

Does anyone even use copper pipe anymore? I was joking!!