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16:1 Alloy tester dial reading
Posted: Thu Nov 04, 2021 10:11 am
by kwilliams
Can some one with a block or bullet of "certified" 16:1 lead tin alloy tell me what the Cabine Tree lead hardness tester should read on the dial? My home made mix is showing a softer ratio. Also is a Brinell value of 11 correct for this?
thanks
kw
Re: 16:1 Alloy tester dial reading
Posted: Thu Nov 04, 2021 5:32 pm
by kwilliams
I need to ad that the maker now is KT Machining, Cabin tree was sold to them.
kw
Re: 16:1 Alloy tester dial reading
Posted: Thu Nov 04, 2021 9:55 pm
by TexasMac
KW,
I can't tell you what the Cabin Tree hardness tester should read but my cast bullet alloy calculator says 16:1 has a Brinell hardness value of 10.53. I hope that helps.
Wayne
Re: 16:1 Alloy tester dial reading
Posted: Thu Nov 04, 2021 10:50 pm
by Gussy
Approximately . 070 plus or minus a couple thousands.
Make sure the rod between the sample and dial indicator is lubed if it's an older unit.
Chart is still on castingstuff.com
Re: 16:1 Alloy tester dial reading
Posted: Fri Nov 05, 2021 4:57 am
by kwilliams
Gussy
Just rec'd this new tester, so of course questions:
That chart does not specifically show 16:1, only shows values for 10, 20 and 25:1. A .070" dial travel puts it in the 20:1 range? Four more thou. travel and you are at 10:1........room for interpretation since its so sensitive.
Texas Mac thanks for the Brinell value
kw
Re: 16:1 Alloy tester dial reading
Posted: Fri Nov 05, 2021 9:57 am
by Gussy
It should repeat on the same alloy. That is the key. If your alloy is reading . 070 and it's working for you, make your next alloy . 070.
This was never a industrial grade instrument. It's relative, but, it WILL repeat which is the key.