fiver
Well-Known Member
personally I want to know why, does it matter.... no.
if you know there is a difference and you know how to control the outcome that's probably enough.
remember lead doesn't work harden it work softens.
the why of that is because your breaking down the internal structure of the alloy, your making it closer to,, to well, pure lead.
only it depends on the actual alloy as to how far down your getting.
antimony crushes and fragments making the lead actually flow easier.
you have to bend and break the tin for that to happen, and then you still have half of a nodule there trying do its job.
you actually have a higher chance of shearing off pieces with tin, rather than rolling back and flattening further like antimony will.
if you combine the two then the whole thing changes again, and it also depends on how soon after casting the change takes place as to how the whole thing is affected.
if you know there is a difference and you know how to control the outcome that's probably enough.
remember lead doesn't work harden it work softens.
the why of that is because your breaking down the internal structure of the alloy, your making it closer to,, to well, pure lead.
only it depends on the actual alloy as to how far down your getting.
antimony crushes and fragments making the lead actually flow easier.
you have to bend and break the tin for that to happen, and then you still have half of a nodule there trying do its job.
you actually have a higher chance of shearing off pieces with tin, rather than rolling back and flattening further like antimony will.
if you combine the two then the whole thing changes again, and it also depends on how soon after casting the change takes place as to how the whole thing is affected.