CURRENTLY SOLD OUT
 | Shop by category |
{"delay":300}
|
Current slide {CURRENT_SLIDE} of {TOTAL_SLIDES}- Best Selling in Lab Chemicals
Current slide {CURRENT_SLIDE} of {TOTAL_SLIDES}- You may also like
Very pure powdered metallic Aluminum, well suited for thermite smelting of iron for small projects! I had about 15 lbs of Black iron sand left from my gold panning days. I had concentrated it using the weakest magnet I could find (only attracted the purest iron oxides). Using a thermite reaction, I smelted about a 7 lb sponge iron bloom. I nested 2 terra cotta plant pots for a crucible, one inside the other, embedded in a sand pile to the lip of the pot. I put a tuna fish can lid in the bottom of the upper pot to keep the powdered mix from falling thru during handling. The molten Aluminum oxide slag floated to the top of my crucible, and was parted after cooling to room temperature with just a few light hammer taps, with an obvious discontinuity between iron and slag. There was some pure Aluminum metal obvious in my lower hardened slag which stuck to both iron and slag (Finish-Ground, it was obviously metallic but not attracted to a magnet.) Only traces of Aluminum were obvious in the sponge iron bloom below the first 1/2 inch (It boiled out aluminum until the iron hardened). The iron bloom was still aluminum rich but fully magnetic, and required forging, hot-folding/welding the resulting bar in a blacksmith forge to melt-out/burn-out enough aluminum and add enough carbon to consider it mild carbon steel. It had fairly good hot-working characteristics on the anvil, improving with working. About 1/2 the bloom weight was lost in compacting and folding the iron due to spalling and scaling, but I had more than enough for a pretty good belt knife blade which picked up enough carbon to slightly harden and temper. I am very pleased with the results, and it is an instant family heirloom. Be aware that "Aluminum-killed steel" remains more malleable than other steels which work-harden with hammer-forming and cold working. For this reason, the auto industry uses it for fenders and body panels, which can not only be formed, but also straightened without cracking after a collision.Read full review
Verified purchase: Yes | Condition: New
Purchased this to mix up some tanerite, & it works great. Extremely fine powder that mixed effortlessly. I will absolutely be ordering again for our next exploding adventures.
Verified purchase: Yes | Condition: New
The aluminum powder was perfect. What I used it for, cleaning slightly pitted chrome had mixed results.
Verified purchase: Yes | Condition: New
I used this to make a polyester based adhesive heat sink paste for mounting LED bulbs to an aluminum backing strip.
Verified purchase: Yes | Condition: New
Product is as described, only one small issue. The package was opened and had spilled all inside the box it came in. Still usable, just need to work on the packing better. Would have given 5 stars if not for the packing issue.
Verified purchase: Yes | Condition: New
