View Full Version : 40/60 Bar Solder, Which is the lead
Irascible
11-25-2008, 12:33 AM
40/60 Bar Solder. Which is the lead, which is the tin?
454PB
11-25-2008, 01:35 AM
The 40.
runfiverun
11-25-2008, 01:39 AM
it is usually called 60/40 tin to lead.
But I have seen 40-60 - I think it was used in the auto body business, before lead was outlawed.
jahela
11-25-2008, 07:51 AM
Possibly it's different in US, but here in Germany it's Pb60Sn40.
Dirk
Whitespider
11-25-2008, 08:40 AM
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
11-25-2008, 04:26 PM
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
11-25-2008, 11:21 PM
I rest my case.
runfiverun
11-26-2008, 12:01 AM
the tin no is first ,sheesh.
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