mystery alloy

[mainiac]

A guy give me about 100# of lead that was already made into big fishin weights,,2 pounders/.....

I wondered what they was made out of,,so i melted some..........

About 11-12 bn
melts under 500 degrees
And it rings like a bell when dropped on the cement floor

Thought it might be linotype,,but why is the bn reading so low?

Whats the hardness of pure tin??

Think i got some great sweetner here,but id like to know what it is, thanks..
BTW,this stuff was melted down sometime in the 1980,s.....

[R.M.]

Wheel weights is my guess.

[John Boy]

Whats the hardness of pure tin??
Come On - A REAL BASIC question that easily can be answered by doing a Search of CB ...
http://castboolits.gunloads.com/showthread.php?9318-Brinell-Hardness-of-Tin


Thought it might be linotype,,but why is the bn reading so low?
Your Joking, Of Course! Your about 2 country miles away from the Bhn of Linotype. Might want to do a Search for the Bhn of this alloy also

[bangerjim]

We are no psychics, but a 12 hardness is COWW'w. Lino is 22 or more!

Stuff like that is a SWAG unless you take it to a scrap yard and get an xray read on it....the ONLY way to know! I do it all the time.

You can find hardnesses of all the metals we use by doing a VERY simple Google search!

banger

[mainiac]

The thing that has me stumped though,is that these ingots ring like a bell,and melt at a lower temp.

[bangerjim]

The thing that has me stumped though,is that these ingots ring like a bell,and melt at a lower temp.


Xray gun.......the ONLY way you will know for sure!

You could have a Bi alloy. Check rotometals for low temp melt alloys. I have a Bi/Pb/Sb/Sn allow that melts at 147F and has a hardness of 22. And "rings like a bell!" The only way I would have enver know what made it up was an xray analysis. Guessing, melting, ringing, asking...........would have lead nowhere. There are several odd alloys in the eutectic class that this might be. Most people would just call it "LEAD".

banger

[John Boy]

The thing that has me stumped though,is that these ingots ring like a bell,and melt at a lower temp. OK, Easy ... take a known quantity of clip on wheel weights and melt them. Note the temperature they melt at and because of the antimony, arsenic and tin (tin melts at 449.47 °F) it will melt lower than 627 degrees, the temperature of pure lead.

[bumpo628]

Could be solder. Is it dull or shiny?

Melting points:
621° = lead
563° = solder (10% tin & 90% lead)
529° = solder (20% tin & 80% lead)
504° = solder (30% tin & 70% lead)
464° = solder (40% tin & 60% lead)
428° = solder (50% tin & 50% lead)
374° = solder (60% tin & 40% lead)
362° = solder (63% tin & 37% lead) (eutectic)
365° = solder (70% tin & 30% lead)
392° = solder (80% tin & 20% lead)
421° = solder (90% tin & 10% lead)
450° = tin

[mainiac]

Could be solder. Is it dull or shiny?

Melting points:
621° = lead
563° = solder (10% tin & 90% lead)
529° = solder (20% tin & 80% lead)
504° = solder (30% tin & 70% lead)
464° = solder (40% tin & 60% lead)
428° = solder (50% tin & 50% lead)
374° = solder (60% tin & 40% lead)
362° = solder (63% tin & 37% lead) (eutectic)
365° = solder (70% tin & 30% lead)
392° = solder (80% tin & 20% lead)
421° = solder (90% tin & 10% lead)
450° = tin
The old ingots are pretty dull,,there at least 25 years old.This stuff melts under 500 degrees,,around 470-480 est,,think i got ahold of some good stuff,,

[bangerjim]

Well, solder will not ring. And the melt temp is in the range of 40/60 solder.

Again I say, if I were you, I would take an ingot of it to a scrap yard. Even if you have to pay a few bucks, it will be worth actually knowing rather than all this guessing by melt temp and ringing sounds!!!!!!!!

bangerjim

[mainiac]

A member on here graciously offered to test it for me,,so im gonna send him a sample...