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Best aluminum for flash?


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#1 SamGurdus

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Posted 20 November 2018 - 11:51 PM

I am looking to order some aluminum to make flash powder for use in shells, but am lost between the different options. Right now I am looking at Aluminum German Dark Pyro, Aluminum German Flake 10890 Eckart, and Aluminum Indian Blackhead Dark Pyro, all from Fireworks Cookbook. Could someone fill me in on the differences between them and how they affect the end result? Thanks.



#2 Mumbles

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Posted 21 November 2018 - 07:26 AM

For a booster, 10890 is my favorite.

Indian blackhead and German dark pyro are both very fine, and mostly used for salutes. Others may disagree, but I find them more or less interchangeable. 10890 is somewhat coarser, around 30 micron vs. single digit micron. I find it a little tamer, and easier to dial in for boosting shells. I use something similar to the Spanish booster for my shells. It also makes nice streamers and has some uses in other effects.
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#3 Dom13c

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Posted 07 January 2019 - 10:05 AM

Well, I personally prefer the Indian Blackhead Dark Pyro for making flash composition . It gives a damn good result (at least for me) and a 1:1 mixture of it with either Bariun nitrate or Strontium nitrate gives a safe and quite powerful flash powder which may find its use in shells and salutes.

#4 Carbon796

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Posted 09 January 2019 - 12:18 PM

That's a waste of barium or strontium nitrate, to use them as a booster or for salutes.

Edited by Carbon796, 09 January 2019 - 12:20 PM.


#5 dlking59

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Posted 11 January 2019 - 12:28 AM

a 1:1 mixture of it with either Bariun nitrate or Strontium nitrate gives a safe and quite powerful flash powder which may find its use in shells and salutes.

Do you use anything other than the 2 chemicals to calm down the AL/nitrate mixture



#6 GrassyKnollShooter

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Posted 28 August 2019 - 05:41 AM

Using flake Al is really the only necessity.

This is by far the best aluminum powder I've used.

 

Eckart German Blackhead 5413 Super H Aluminum Powder, 3 Micron



#7 WSM

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Posted 29 December 2019 - 07:19 AM

I am looking to order some aluminum to make flash powder for use in shells, but am lost between the different options. Right now I am looking at Aluminum German Dark Pyro, Aluminum German Flake 10890 Eckart, and Aluminum Indian Blackhead Dark Pyro, all from Fireworks Cookbook. Could someone fill me in on the differences between them and how they affect the end result? Thanks.

 

 

 

I suppose the question begs the question, for what use in shells? If making aerial salutes, I'd say courser aluminum flake would be safer for handling and production with minimal degradation in the effect noticed from the ground. If used as a booster, I agree with Mumbles, though I'm unfamiliar with the Spanish booster.

 

The finer, dark aluminum powders are particularly effective in small salutes or shell inserts, but are wasted in larger salutes while also adding unnecessary risks in the handling and manufacturing phases of the operation. 

 

The above are opinions expressed through experience and observations from many decades of experience in high energy chemistry research.

 

WSM B)


Edited by WSM, 29 December 2019 - 07:20 AM.





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