40/60 Bar Solder, Which is the lead

[Irascible]

40/60 Bar Solder. Which is the lead, which is the tin?

[454PB]

The 40.

[runfiverun]

it is usually called 60/40 tin to lead.

[Echo]

But I have seen 40-60 - I think it was used in the auto body business, before lead was outlawed.

[jahela]

Possibly it's different in US, but here in Germany it's Pb60Sn40.

Dirk

[Whitespider]

Any solder I've seen is labeled with the tin content first, even lead-free solders have the tin content listed as the first number. I have two old 'rolls' of acid core solder in my tool box labeled as 40/60 (40% tin / 60% lead) and 30/70 (30% tin / 70% lead).

The Kester company lists tin/lead 'bar' solder in several alloys, 63/37, 60/40, 55/45, 50/50, 45/55, 40/60, 35/65, 30/70, 25/75, 20/80 and 10/90.

So if your bar solder is labeled or stamped 40/60 it's probably 40% tin.

[Irascible]

it is usually called 60/40 tin to lead.

NOPE, cast onto the bars are "National Lead Company" and it's 40/60

I also have some extruded Kester bars which are stamped Sn63Pb37

[454PB]

I rest my case.

[runfiverun]

the tin no is first ,sheesh.