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Author Topic: A Bronze suitable for cannon building?  (Read 741 times)

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Offline BoomLover

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A Bronze suitable for cannon building?
« on: January 02, 2010, 04:45:30 PM »
In the January ENCO catalog, they list Solid Alloy Bronze Round Rods, SAE 660 (CDA 932). "Ideal for general-utility bearings and bushings, High-quality, rough machine-finished stock. Just wondered if this is a type of Bronze usable for Cannon Barrels? Thanks, BoomLover
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Offline GGaskill

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Re: A Bronze suitable for cannon building?
« Reply #1 on: January 02, 2010, 05:57:56 PM »
Check out this link to a spec sheet at Anchor Bronze.  Compare it with the specs for C90700 which is more or less 90/10 Cu/Sn bronze, the traditional gun casting alloy.  Compare those to Everdur.
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Offline gulfcoastblackpowder

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Re: A Bronze suitable for cannon building?
« Reply #2 on: January 02, 2010, 08:39:50 PM »
I inquired about various types of bronze a few years ago, and there are many who have cannon made of 660.  While it's probably not the ideal bronze, it does work.  I'd prefer a 90/10 or the silicone bronzes like the Everdur, though they apparantly don't machine as easily.
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Offline dan610324

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Re: A Bronze suitable for cannon building?
« Reply #3 on: January 03, 2010, 01:26:47 AM »
this will probably not help you at all , but it will show you the large difference in alloy composition in older cannons

the tables comes from an doctoral dissertation by Helena Forshell
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Dan Pettersson
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Offline dan610324

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Re: A Bronze suitable for cannon building?
« Reply #4 on: January 03, 2010, 01:30:02 AM »
more

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Dan Pettersson
a swedish cannon maniac
interested in early bronze guns

better safe than sorry

Offline dan610324

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Re: A Bronze suitable for cannon building?
« Reply #5 on: January 03, 2010, 01:32:02 AM »
the last

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Dan Pettersson
a swedish cannon maniac
interested in early bronze guns

better safe than sorry

Offline Max Caliber

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Re: A Bronze suitable for cannon building?
« Reply #6 on: January 03, 2010, 02:39:58 AM »
Everdur is nice to cast but it is more like steel than bronze to machine. Good stuff but expensive, I recently paid eight bucks a pound for 22 pounds.
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Offline GGaskill

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Re: A Bronze suitable for cannon building?
« Reply #7 on: January 03, 2010, 11:01:47 AM »
Everdur is nice to cast but it is more like steel than bronze to machine.

Since I am used to machining steel, that wouldn't necessarily be a bad thing.
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Offline Double D

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Re: A Bronze suitable for cannon building?
« Reply #8 on: January 03, 2010, 11:05:24 AM »
Quote from: Max Caliber on January 03, 2010, 02:39:58 AM
Everdur is nice to cast but it is more like steel than bronze to machine. Good stuff but expensive, I recently paid eight bucks a pound for 22 pounds.

$8 a pound?   Do they pay premium for chips?
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Offline dan610324

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Re: A Bronze suitable for cannon building?
« Reply #9 on: January 03, 2010, 02:28:50 PM »
thats another good thing with casting , the chips you make from the bore is recycleable  ;D
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Dan Pettersson
a swedish cannon maniac
interested in early bronze guns

better safe than sorry
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