99%+ aluminum powder and granules, moisture-certified <0.05% for melt safety. Injection, wire-fill and tap addition forms. Aluminothermic grades available.
QUICK ANSWER
Deoxidation-grade aluminum powder and granules (99%+ Al, 0.1-3 mm) are added to molten steel to bind dissolved oxygen as alumina — the strongest practical deoxidizer in steelmaking — and to grain-refine the steel through aluminum nitride formation. It is essential for producing killed steels: the fully deoxidized, clean steels that automotive, structural, and pressure applications require.
Every tonne of killed steel carries a few hundred grams to two kilograms of aluminum added during tapping and ladle treatment: the aluminum reacts with dissolved oxygen almost instantly, forming alumina that floats to the slag (with inclusion control being the metallurgist's art), while residual aluminum fixes nitrogen as AlN to control grain size and aging. Powder and granule forms — versus ingot or wire — serve specific addition routes: injection, top-blowing, and cored-wire feeding, where size distribution and reactivity determine deoxidation yield.
MATERIAL DATA
Lot-level controls focus on the chemistry, particle characteristics, and process values that influence manufacturing consistency and finished-part performance.
| Element | Content | Performance Role |
|---|---|---|
| Aluminum (Al) | > 99.0 wt% | Deoxidizing agent — strongest common oxygen binder |
| Active aluminum | > 95 wt% | Metallic fraction available for reaction |
| Iron (Fe) | < 0.5 wt% | Impurity from production |
| Silicon (Si) | < 0.3 wt% | Residual limit |
| Moisture | < 0.05 wt% | Critical safety spec — wet aluminum in molten steel is an explosion hazard |
Final limits can be aligned with the agreed purchase specification.
APPLICATIONS
Steel mills are the sole major market: BOF and EAF shops add deoxidation aluminum during tapping to kill the steel, then trim aluminum in the ladle furnace to hit the acid-soluble aluminum specification that defines grain size and cleanliness. The product is bought on active-aluminum content, moisture certification (a safety-critical parameter for anything entering molten steel), and size consistency for the addition equipment. Mills buy under annual contracts with safety documentation that their melt shops audit.
Secondary uses follow the same chemistry elsewhere: aluminum deoxidation in copper and nickel alloy melting, thermite welding and metallurgy (aluminum as the reductant in aluminothermic reactions producing chromium, manganese, and vanadium master alloys), and exothermic addition compounds for ladle treatment. The aluminothermic market consumes aluminum powder as the fuel of the metal-producing reaction — a steady specialty tonnage.
CHEMICAL & METALLURGICAL PROCESS POWDERS
CUSTOM SUPPLY
We supply deoxidation aluminum in powder (0.1-1 mm), granule (1-3 mm), and shot forms, 99%+ purity with certified active aluminum and moisture per lot. Cored-wire fill grades, aluminothermic-grade fine powders, and packaging engineered for melt-shop safety (moisture-barrier sealed, batch-coded) are standard. Not export-controlled.
We supply deoxidation aluminum in powder (0.1-1 mm), granule (1-3 mm), and shot forms, 99%+ purity with certified active aluminum and moisture per lot.
Cored-wire fill grades, aluminothermic-grade fine powders, and packaging engineered for melt-shop safety (moisture-barrier sealed, batch-coded) are standard.
MATERIAL COMPARISON
| Comparison Point | This Product | FeSi / FeMn |
|---|---|---|
| Deoxidation power | Strongest practical | Moderate |
| Residual effect | Grain refinement via AlN | Alloying contribution only |
| Inclusion type | Al2O3 — needs Ca treatment | SiO2/MnO — more plastic |
| Cost per deoxidation unit | Low | Moderate |
| Steel cleanliness potential | Highest | Standard |
| Best use | Killed, clean, Al-killed steels | Semi-killed, general steels |
TECHNICAL FAQ
Need a different chemistry, particle range, or processing route? Our material team can review the requirement and supply window.
Any water entering molten steel flashes to steam with explosive force — hydrogen-steam explosions are the classic melt-shop accident. Our deoxidation grades are dried, sealed in moisture-barrier packaging, and certified below 0.05 percent moisture per lot.
0.1-1 mm powder for pneumatic injection; 1-3 mm granules for top-blown additions; wire-fill grade for your cored-wire supplier. Share your equipment type and we match the size distribution with flow data.
Typically 0.3-2 kg per tonne depending on practice and grade — deep-deoxidation and fine-grain grades at the upper end. Yield data for our size cuts is available for your metallurgists' balance calculations.
Yes — fine atomized powders with certified active aluminum for thermite and aluminothermic master-alloy production, in the reactivity grades that process requires.
No. These are standard steelmaking consumables shipping without licensing requirements.
RELATED PRODUCTS
Compare neighboring grades from the same material family, then review the complete category for additional chemistry and particle options.
Atomized FeSi15 for DMS plants with magnetic recovery certification; milled FeSi for steel and foundry; low-Al Pidgeon grade. Annual plant contracts.
FeTi 30/40/70 and FeB 15-20% powders, cored-wire fill grades, certified gas content. Stainless stabilization, IF steel, boron hardenability. Mill qualification support.
LaNi5-type AB5 and AB2 alloys with certified capacity, cycle life and PCT curves. Light-rare-earth composition — outside export controls. Battery and tank grades.
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Share your target chemistry, particle size, process, annual volume, and destination. Our powder specialists will confirm the closest production grade and documentation package.
