Pure Aluminum Powder (99.6% Pure)
100 Mesh / 100g
$20.12
Sale price
$20.12
Regular price
$42.02
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Shape: Irregular, flat, sheet-like micro-flakes rather than round droplets.
Particle Size (Diameter): Generally ranges from 5 to 100 microns across.
Thickness: Very thin, measuring between 0.1 and 1 micron.
Surface Area: High surface-area-to-volume ratio (often exceeding 20 m²/g)
Pure Aluminum Powder (99.6% Pure)
$20.12
Sale price
$20.12
Regular price
$42.02
Ivy Tech and Metal Work’s’ 99.6% pure flake Aluminum powder, is produced by dry milling shredded pure Aluminum metal sheet. Dry milling is stopped when the desired particle size range is reached. The Aluminum particles are then extracted from the canister and allowed to generate a normal surface oxide layer, as any aluminum metal body does when exposed to our oxygen rich atmosphere. This is done in a controlled, nondestructively, manner. Thus, resulting in a powder/particles that are entirely stable in the open air.
This metal powder’s particles are thin, flat, and platelet-lIke in shape. Often referred to as “Flake” shaped.
Flake particles differ from the more commonly found spheroidal (atomized) particle metal powders, in that Flake type particles have a extreme (high) diameter-to-thickness ratio (roughly from 40:1 to 100:1), and a large surface area to mass ratio (> 10 m²/g).
Particle shape, in metal powder’s, is an extremely important variable because of its impact on a pyrotechnic compositions reactivity. Think about it. Which is easier to light, a 3 x 3-inch piece of paper or a 3 x 3-inch piece of plywood? Chemically they’re almost the same thing. But the little, bitty edge of the paper is a lot easier and faster to light than the edge of the plywood. And that’s what separates the flake particles, from the atomized and spheroidal, ease of ignition.
No matter what type of exothermic reaction you are trying to produce, success will depend (in part) upon selecting metal powder products with the right particle shape specifications.
No matter what type of exothermic reaction you are trying to produce, success will depend (in part) upon selecting metal powder products with the right particle shape specifications.
Physical Structure of Particles & Dimensions
**”Flake” shaped particle powders are required, for the production of exothermic/reactive (pyrotechnic) compositions, compounds, and mixtures.
Because of the ball mill production process we use, all Ivy Tech and Metal Works metal powders are composed of “Flake Particles”.
Mesh (Particle Size Grade): Denotes the particle size of the screen which that grade of powder was sieved through. “Mesh Number” is interpreted in relation of the characteristics of the sieving screen. The mesh number = the number of holes in a 1 inch by 1 inch square area of a given sieve screen.
(Example: A 100 mesh screen, has 100 holes per 1 inch square area.)
So a Metal Powder having a designation of 100 mesh, means that all particles larger than those that fall through a 100 mesh sieve screen, have been removed.
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Advanced Statiatical Representation of particle size: The distribution of particles, by size, from sub-micron to the given mesh grade (on an X (particle size), Y (mass), sample distribution graph, shows that our product has a particle size distribution that conforms to an extremely Left Skewed Distribution Curve (has a long tail descending from the median to the left). With a maximum particle size equal to the mesh grade each product is sieved at, and the mean particle size equal to 15%-20% smaller-than the products Mesh Grade (Mesh rating = maximum particle size. Meaning 0 = The percentage of particles larger than the rated Mesh Grade). With sub-micron sized particle = less than 5% of the supplied mass of aluminum powder, at any particle size grade we sell. (Sub-micron meaning smaller than 1 micron in size).