JeffinNZ
02-22-2009, 04:53 AM
Team.
I have been curious to see if stick on 'Pb' wheel weights will heat treat to a BHN greater than air cooled.
I use my stick on weights for making a faux 40-1 alloy. Air cooled stick on measures around 7 BHN and though this is very soft it is obviously not 'pure' Pb which measures 5 BHN. To create my 40-1 to top of the stick on weights with an appropriate measure of some of the tin based babbit I have. BHN bumps to high 7's.
A week ago I was oven heat treating some bullets and tossed in some of my 40-1 bullets also. All were baked for one and a half hours at 450F then dunked in cold water. After 7 days the 40-1 bullets measured 11.8 BHN, higher than regular clip on WW air cooled.
Now I know this is not very scientific but what it does show is that stick on WW can be made into very usable alloy with a BHN on par or slightly higher than their clip on cousins.
I have been curious to see if stick on 'Pb' wheel weights will heat treat to a BHN greater than air cooled.
I use my stick on weights for making a faux 40-1 alloy. Air cooled stick on measures around 7 BHN and though this is very soft it is obviously not 'pure' Pb which measures 5 BHN. To create my 40-1 to top of the stick on weights with an appropriate measure of some of the tin based babbit I have. BHN bumps to high 7's.
A week ago I was oven heat treating some bullets and tossed in some of my 40-1 bullets also. All were baked for one and a half hours at 450F then dunked in cold water. After 7 days the 40-1 bullets measured 11.8 BHN, higher than regular clip on WW air cooled.
Now I know this is not very scientific but what it does show is that stick on WW can be made into very usable alloy with a BHN on par or slightly higher than their clip on cousins.