60/40 composition

[shuz]

60/40 generally accepted composition terminology:
Is the 60 the tin or the lead?
I have some small ingots just marked 60/40 and am wondering which is witch?

 

[obssd1958]

Industry standard is lead/tin

Sorry! I got it backwards!
I'm going to blame it on old age!!

 

[Rick]

60/40 tin/lead is what is commonly used for stained glass windows.

 

[Bret4207]

I have always seen the lead content first, then the tin.

 

[shuz]

In solder, 60/40 is the tin/lead ratio.
I was wondering in an ingot of alloy such as I have, if the ratio is the same. You would think so, but I would like a definitive answer from someone who knows.
I plan to make up some Lyman #2 alloy and plan to use these ingots.

 

[Snakeoil]

Yup 60% tin 40% lead. I think that the confusion is caused by casters like us using lead/tin terminology. 20:1 is lead:tin.

 

[fiver]

tin first then lead in solder.
90-10 or 90-5-5 is 90% tin then lead or 90% tin, then antimony then lead.
sounds kind of weird to call something 5-95 or 10-90 but they make those too.

 

[Ian]

The confusion is due to the largest constituent being first (whatever it is) and the rest in descending order.

60/40 is tin/lead, not because tin is first but because tin is the most. It is also called "stained glass 60" and is for brazing the cames which are a much higher lead content and thus higher melting point.

 

[Snakeoil]

The confusion is due to the largest constituent being first (whatever it is) and the rest in descending order.

That makes sense. Same as dimensions, only in reverse. 2x4x12, 4x8x10, etc.

 

[RBHarter]

LxWxH always except dimension lumber which is given in reverse....... Probably because it's in x in x feet .

 

[JonB]

The confusion is due to the largest constituent being first (whatever it is) and the rest in descending order.

60/40 is tin/lead, not because tin is first but because tin is the most. It is also called "stained glass 60" and is for brazing the cames which are a much higher lead content and thus higher melting point.

I was sure Came was Pure Lead. I have a 35 lb box of bent up Came that was at a metal recycler place.
I had to google it. Brands other than Cascade may have different contents, I imagine.
From a Suppliers website:
"Cascade Lead Came is made from a very closely controlled alloy that combines a fine grain structure with high strength. Started with 100 percent pure lead exacting quantities of Tin, Antimony, Copper and Bismuth are added. The came is with over 99 percent pure lead but can now be stretched to the breaking point still maintaining a fine grain structure. This alloy also prevents oxidation, making for easier soldering and allowing a long shelf life without tarnishing."

Lead Came 3/4" Flat H 40lb Box

Lead Came 3/4" Flat H 40lb Box

www.edhoy.com

 

[JWFilips]

Solder is tin first then lead
Cast bullets alloy is lead first ...then tin!
Guess casters are radicals in the world of alloys!
They are always screwing with things!

 

[fiver]

the newer came is extruded so it can have as much as 3% antimony, same as lead pipe.
usually more like 1 or 1.5% though, since antimony is expensive.

casting alloys get expressed as tin then antimony then lead.
2/6/92 teracorp magnum
5/5/90 lyman no-2
4/12/84 lino-type.

 

[JWFilips]

fiver, i have 100 year old gas pipe here from my buddy Ed who has been at the gas company for 45 years
Looks like 100 % lead! What do you think?

 

[fiver]

bet it is straight lead.
it wasn't till the last 20-25 years they started moving into doing the extrusion thing.

 

[JWFilips]

Thank You!
Smelts like pure lead!

 

[Rick]

Thank You!
Smelts like pure lead!

At what temperature?

 

[JWFilips]

Rick,
When it melts!
Sorry I had to do that !
At about 625 -630