Originally Posted by
Quovardis
Guys,
I have a question on the BHN calc, rotometals (and Bumpys cals) formula states this 8.60 + ( 0.29 * %Tin ) + ( 0.92 * %Antimony)
This suggests to me that the base BHN for pure lead is 8.6 and if I use the calc with say 10lbs of lead it indeed comes up with a hardness of 8.6.
However from what I can see online and on Bumpys calc the BHN of pure lead is 5, taking this into consideration would the correct formula be: 5.00 + ( 0.29 * %Tin ) + ( 0.92 * %Antimony)?
Dont mean to pick any holes or anything and the fact that im a noob means that for sure could be missing something....