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Discussion Starter · #1 ·
We have had titanium, scadmium, and aluminum for a long time now, but I wonder why magnesium is not used more, especially on low stress parts due to its great corrosion resistance and heat dissipation qualities. I mean if they can use it for rims and engine casings on race cars in place of aluminum why not on a pistol, shotgun, or rifle.

Thoughts?
 

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Discussion Starter · #7 ·
I know pure magnesium will do that but what about an alloy?
 

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Fanatical Feline
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I would think it would lessen the reaction but im not sure..

We where always told in welding school to never weld anything with titanium or magnesium in it even as an alloy
 

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i dont think there are any metals that would reduce magnesiums reactivity if alloyed. after all, an alloy still contains chunks of pure titanium, its just in a mix.
 

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well, sorta

Magnesium has a special place in the hearts of VW enthusiasts. We all know (or SHOULD know) that the engine case of the Type I and 3 air-cooled motor is made of an alloy of it, as is the gearbox casing. We might also know that it burns. If we're good at trivia, we could say that Volkswagen once used 38,000 tonnes per annum, nearly one sixth of the entire world's output.

In actual fact, one Beetle contains about 22 kg of magnesium castings, because the air-cooled engine design was ideally suited for ultra-light alloy. The trend to front-mounted water-cooled engines has now reduced VW's magnesium consumption considerably, although it still finds uses mainly in gearboxes and other transmission components. The pressure diecasting plants operated by Volkswagen remain prime examples of highly developed technology.

Magnesium is known as the lightweight champion of the metals. It is the lightest of all metals used in general engineering, with a relative density only 1.7 times that of water! Aluminium is more than half as heavy again, iron and steel are four times heavier, and copper and nickel are five times heavier. Perhaps not unexpectedly though, magnesium is also relatively weak in the pure state, with a tensile strength of only 110 newtons per square millimetre. However, when alloyed with various other metals it can be strengthened two or even three times over, yet still remain very light. Aluminium, zinc and thorium are common alloying metals.
 

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Fanatical Feline
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Yeah, I have some old VW bug engine blocks that I have cracked or just tossed that I plan on lighting up one of these days..
 

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Discussion Starter · #14 ·
I was ahead of my time boys! Taurus has at the SHOT show a model 85 revolver with a ....drum roll please......forged magnesium frame.

It can and has been done.
 

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Annihilator
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Hahhhahaha, back from the dead for the win!

How does it work? The frame doesn't get any of the heat I take it?
 

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10111011
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The real question... is at what tempature does Mg and its alloys combust at ?

In my mind, if you keep the intesnse pressures and heat into a traditional chamber and bore...then the rest can be whatever. Unless its an AK 47 with wood grips on full auto...
 

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Discussion Starter · #18 ·
But alloyed who knows. I just saw the Taurus USA sales rep talking about it and the new Taurus Judge Magnum with the 3in chamber.


They couldn't make aluminum work in guns for years until they got the alloy and the heat treat right. Many old Colt Commanders with duralumin frames cracked and broke under the stress, but now aluminum frames are everywhere.
 

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Negative Nancy
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mag is starting to be used in the MIMing process as an alternative to aluminum, but its limitations are that it basically has to be cast from what i've learned.
 

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like i said before, even an alloy contains solid raw material. so you will have parts of you metal combusting at 500 degrees and parts that dont.
 
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