Hardness question

[Tn Jim]

Back about 15 years ago the guy that got me started casting gave me 10 pounds of linotype. He suggested I mix it with wheel weights. So I mixed it 8 pounds of coww with one pound of lino and air cooled. About what BHN what this be? And about what would it be if I water dropped them? Thanks.

[John Boy]

Bhn - 13.11... Air Cooled? Don't have a clue

[John Boy]

Bhn - 13.11... Air Cooled? Same but will harden is 2 weeks. Water dropped> Don't have a clue

[bangerjim]

Download the free Excel spreadsheet alloy calculator and all questions will be answered on mixing and hardness. Do a search on here and plug in your values to play what-if.


Waterdropping is only a pseudo hardness.

You might want to check with lasc.us website to see what is there on water hardening guestimates.

bangerjim

[454PB]

I've tested water dropped boolits cast from straight COWW, and they reach 18 to 20 BHN after 4 weeks of aging. Adding a pound of linotype to 8 pounds of COWW does raise the antimony content, but the increase in hardness will be small......maybe 1 BHN.

My own stash of COWW is pretty old, and when air cooled, boolits cast from this are around 12 BHN.