Possible to under-anneal brass? Potential problems?

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Possible to under-anneal brass? Potential problems?

Post by beepar » 24 Dec 2013, 12:05 pm

Hi guys,

I'd like to give some basic annealing a go.

Just with a hand gas torch on a few casings, nothing fancy.

Is it possible to under anneal brass? Does heating it some, but not enough to soften it cause any problems that make is unusable?

Just after a little advice to avoid doing anything stupid.

Thanks.
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Re: Possible to under-anneal brass? Potential problems?

Post by Weepy » 24 Dec 2013, 2:30 pm

Short answer, no.

If you heat it mildly, you just warm the metal. There is no change to it metallurgically like softening it when heated to an appropriate temperature.
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Re: Possible to under-anneal brass? Potential problems?

Post by Norton » 24 Dec 2013, 2:43 pm

Nah.

There is nothing, annealed and butter (useless brass).

Anywhere up to the last state and you're ok.
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Re: Possible to under-anneal brass? Potential problems?

Post by Monty » 24 Dec 2013, 2:51 pm

They sell annealing thermometers and also a pain like nail polish which you paint on your brass and it shows when the temperature is correct, and to stop heating it.

Look up 'Tempilstil'.
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Re: Possible to under-anneal brass? Potential problems?

Post by on_one_wheel » 24 Dec 2013, 10:47 pm

Tempilstiks and Thermomelt are 2 brands you might find, When the stick melts, the precise temperature is reached, so they may be a bit fiddely in this aplication. I'm yet to see the paint on stuff but it sounds more practicle for this.

To properly anneal brass, the temperature needs to be at 650 degrees F

I rotate mine in a small deep socket ( about a 1/2 " - 1/4 drive ) in the cordless drill at low speed with the neck and shoulder sticking out, in a dark room and hold the flame ( i use a LPG torch ) on them untill I can see a very faint glow then dunk them into a deep bucket of water to prevent the heat soaking into the rest of the case.

Also the small electric lead melting pots for bullet casting hold the perfict tempture for annealing brass, just dip the neck in up to where you want it annealed and give it 10 to 15 seconds.
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Re: Possible to under-anneal brass? Potential problems?

Post by Lorgar » 26 Dec 2013, 9:48 am

on_one_wheel wrote:When the stick melts, the precise temperature is reached, so they may be a bit fiddely in this aplication. I'm yet to see the paint on stuff but it sounds more practicle for this.


How tough is it to get off the brass after if it's melted all over it?

Sounds like a pain in the ass?
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Re: Possible to under-anneal brass? Potential problems?

Post by on_one_wheel » 26 Dec 2013, 8:56 pm

on a big work piece that takes quite some time to bring up to temptre, and won't loose much heat when the flame is removed to hold the wax to it, it would work well.... I personally wouldn't bother with brass shells.
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Re: Possible to under-anneal brass? Potential problems?

Post by Harper » 28 Dec 2013, 7:04 pm

It's wax, hey?

Must be some serious wax to hold up to 650 F for annealing.
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Re: Possible to under-anneal brass? Potential problems?

Post by on_one_wheel » 11 Jan 2014, 6:08 pm

Here we go, this is the paint on stuff for anealing brass cases. http://www.brownells.com/gunsmith-tools ... ustom+Link
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Re: Possible to under-anneal brass? Potential problems?

Post by veep » 12 Jan 2014, 6:34 pm

Thanks for the link on_one_wheel.

Nice way to dummy proof it for us newbies :D
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