I get 12-13 BNH on aircooled clip ons
15-18 BNH on water quench clip ons (aged 2 wks or more)
6 BNH stick ons air cooled (100% lead is 5 BNH)
I use a Lee hardness tester.
Haven't tried water quenching stickies, but according to what I've read the arsenic present in clip on wheel weights give the alloy the ability to harden. LYMAN #48
I don't think there is any arsenic present in the stickies, but it's something I need to try next time I cast my 45-70 GOV. 405 hollow base out of stickons.
Last edited by dagger dog; January 20, 2013 at 04:29 PM.