Magnalium MG/AL

(16 customer reviews)

$14.00 Per Pound

Magnalium sometimes called Mg/Al is a very brittle alloy of magnesium and aluminum. Some common uses are in for spark effects, in strobing compositions, and in crackling stars.

We only have -325 mesh and a small amount of -50 mesh in stock.  No ETA on other mesh sizes

SKU: FCB307 Categories: ,


Magnalium used for strobe stars, for spark effects or to enhance other stars has to be finer than 120 mesh, while for use in crackling microstars it has to be something between 30 and 50 mesh. The coarser type is generally harder to find commercially. Magnalium can also be substituted into most mixtures that aluminum finds use in. These include; thermite and flash powder. Again, avoid unstable combinations, and remember that Mg/Al is very reactive.

Magnalium is much more powerful than aluminum powder (when compared at similar mesh size) and similar precautions should be taken as per magnesium. These include dangers of moisture and incompatibility with other compounds

Magnalium dust is harmful and a dust mask should be worn when handling fine dust.  Mixtures containing nitrates or ammonium perchlorate and magnalium sometimes heat up and may ignite spontaneously, especially when moist.  Coating with linseed oil will prevent reaction with nitrates, but this treatment does not protect the magnalium from ammonium perchlorate. Only treating with potassium dichromate will prevent this reaction. This is done by boiling in a 5% potassium dichromate solution.  Adding fine potassium dichromate powder to such compositions may also help.

Additional information

Weight 1 lbs
Dimensions 8 × 6 × 2 in
Particle Size

-10+50 Mesh, -50+100 Mesh, -50 Mesh, -100+200 Mesh, -50+200 Mesh, -200 Mesh, -200+325 Mesh, -230+325 Mesh, -325 Mesh

16 reviews for Magnalium MG/AL

  1. Brandon

    Awesome product!! exactly what I wanted. The Magnalium powder was nicely packaged in two plastic bags and very clean with no metal powder everywhere, I’m very impressed. The product exceeded my expectations, it’s really HOT! because of its fine particle size. I am so happy somebody is selling this because it is very hard to come across magnalium at this fine particle size, thank you for selling this amazing product. I plan to purchase more hopefully for years to come!

  2. Jim Jasper

    This stuff is amazing. Works great for strobe rockets and stars. I will be back for sure

  3. Donaldieh

    Some of the best stuff I have ever used. Get it from here and you won’t be disappointed

  4. Andre

    Great stuff. Tested multiple sizes. Particle sizes are accurate and the material reacts perfectly.

  5. RafaelBoalk

    Finally a solid source for Magnesium/Aluminum alloy. Nice stuff

  6. Russ Pushkin

    Get this stuff. It’s awesome

  7. Tom Skiba

    Clean stuff. Works great

  8. CharlesLat

    Awesome stuff. Thanks for your great products and even better pricing

  9. Amy Korbs

    Amazing stuff Works great in a comps

  10. Albert Datey

    Particle sizing was very accurate. Thanks for another great product

  11. Mary Dunsby

    Best Magalium on the market

  12. Frank

    Amazing product. It had brought my strobe rockets to the next level. I will be back for sure.

  13. Brad Ryder (verified owner)

    100% best quality. Excellent product.

  14. MICHAEL HAMMER (verified owner)

    Just like everything you sell it’s top notch and the best prices and shipping, thank you

  15. Willie Taf

    Excellent and high-quality

  16. Charlie Mohr (verified owner)

    Awesome product! Fast shipping!

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