Mitty38
Well-Known Member
I know this has probably been addressed before but recipies that I have tried with wheel weight come short of promised BHN and some come right out to where they are supposed to be. Sometimes they hit right on the nose.
Now before we go there, too keep us on the Right track. I am not obsessed with BHN, but am trying to produce a supply of consistent Alloy. Chemical consistent. Plus repeatable.
My thoughts are there is something chemically off with the newer wheel weights, that still contain lead base instead of Zinc especially if you really take a close look at some of the newer lead clip ons they are powder coated.
I have melted down wheel weights air cooled and got BHN's at 8,9,10,11and14. Very seldom 12. In fact every just about every hardness but what the experts say they are.
I have aquired and processed small samples from different era's since I have started this. Seams to me that except for one batch of 14BHN that was melted from Very recently made imported from china clip ons, which I think may contain a soluble amount of zink and copper.
Generally the older ones are harder.
Do you guys think that arsenic depletion to the point of total deletion has caused this? Been noticed by anyone else? Or become a problem while alloying for any one else?
Thoughts? Factoids appreciated.
Now before we go there, too keep us on the Right track. I am not obsessed with BHN, but am trying to produce a supply of consistent Alloy. Chemical consistent. Plus repeatable.
My thoughts are there is something chemically off with the newer wheel weights, that still contain lead base instead of Zinc especially if you really take a close look at some of the newer lead clip ons they are powder coated.
I have melted down wheel weights air cooled and got BHN's at 8,9,10,11and14. Very seldom 12. In fact every just about every hardness but what the experts say they are.
I have aquired and processed small samples from different era's since I have started this. Seams to me that except for one batch of 14BHN that was melted from Very recently made imported from china clip ons, which I think may contain a soluble amount of zink and copper.
Generally the older ones are harder.
Do you guys think that arsenic depletion to the point of total deletion has caused this? Been noticed by anyone else? Or become a problem while alloying for any one else?
Thoughts? Factoids appreciated.
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