High-specification metal powders, liquid polymers, and specialty gas precursors dispatched directly with verifiable batch Certificate of Analysis (COA) and global hazardous cargo clearance.
Industrial pricing for pure aluminum powder exported from Chinese manufacturing centers is tied directly to the Shanghai Futures Exchange (SHFE) base ingot price, added processing premiums, protective inerting parameters, and particle size distribution (PSD) yield curves.
| Grade Designation | Purity (Al Min) | Particle Size (D50) | Morphology / Process | Typical FOB China (USD/MT) | Key Industrial Applications |
|---|---|---|---|---|---|
| Standard Air-Atomized (Industrial) | ≥ 99.0% | 45 – 100 μm | Irregular / Granular (Air) | $2,850 – $3,350 | Ferroalloy deoxidizer, AAC concrete aerating, basic pyrotechnics |
| Refined Spherical (Nitrogen Atomized) | ≥ 99.7% | 15 – 45 μm | Spherical (N2 inert gas) | $3,600 – $4,400 | Refractory slide gates, high-energy catalysts, thermite welding |
| Photovoltaic Electronic Grade (PV Paste) | ≥ 99.85% | 2.0 – 5.5 μm | Spheroidal (Argon/N2, low Fe/Si) | $4,800 – $5,900 | Back surface field (BSF) & TOPCon solar cell metallization paste |
| Additive Manufacturing (Laser Powder Bed) | ≥ 99.9% | 20 – 63 μm | Ultra-Spherical (Argon atomized) | $5,200 – $6,800 | SLM / DMLS 3D printing, aerospace thermal exchangers, RF wave guides |
| High-Purity Fine Powder (Chemical) | ≥ 99.95% | 5 – 15 μm | Micro-Spherical / Low Heavy Metals | $6,200 – $8,500 | Organometallic synthesis, PAC flocculant catalysts, advanced solid propellants |
Quotes for pure aluminum powder reflect: P = [A00 Aluminium Spot (SHFE/LME) + Atomization Premium + Size Screening Yield Loss + Inert Gas Packaging Surcharge + Hazmat Export Compliance]. Fine cuts (D50 < 10μm) incur higher screening cycle costs and intensive anti-explosion handling under strict nitrogen blanket conditions.
From coarse air-blown grades to micro-engineered spherical powders, modern powder metallurgy demands rigorous control over surface oxide thickness, aspect ratio, tap density, and flowability.
Traditional air atomization creates thick, irregular oxide skins (Al2O3 > 1.5 wt.%) with angular shapes that impede uniform compaction. Modern tier-1 facilities in China have adopted closed-loop supersonic nitrogen and argon atomization. This achieves sphericity indices > 0.92, controlled active aluminum levels (> 99.2%), and consistent sub-nanometer passivation layers.
High Sphericity & Low OxideAs solar cell manufacturing advances into N-type TOPCon and HJT architectures, aluminum paste formulations require strict rheological performance. Modern lines utilize precision multistage air classifiers to eliminate ultrafines (< 1μm, which create explosive dust and erratic binder absorption) and eliminate oversize particles (> 10μm, which clog printing screens and cause grid line interruption).
Photovoltaic TOPCon OptimizationDemand for pure Al and lightweight high-thermal alloys via Laser Powder Bed Fusion (P-BF) and Direct Energy Deposition (DED) has quadrupled. Requirements center on high apparent density (> 1.45 g/cm³), excellent Hall flow rates (< 30 s/50g), and minimal internal satellite particles, preventing porosity defects in thin-walled thermal exchangers and lightweight aerospace ducting.
LPBF & Thermal ManagementProcurement engineers and line managers do not buy on price alone; success in high-throughput lines is governed by five mission-critical metallurgical and safety specifications.
For chemical catalysts, thermite, and energetic formulations, total aluminum (Al_total) is misleading. International buyers mandate active metal determination via hydrogen evolution measurement (acid displacement), guaranteeing Al_act ≥ 98.5% with minimal baseline pre-oxidation.
Mesh ratings (e.g. -200 mesh) are insufficient for advanced engineering. Validated laser diffraction reports (ISO 13320 / Malvern Mastersizer) with defined span values (D90 - D10) / D50 < 1.2 verify uniform particle packings and repeatable sinter shrinkage.
Trace iron (>0.12%) degrades electrical conductivity in conductive tracks and catalyzes unwanted side reactions in fine chemistry. Moisture must stay strictly below 0.10% to eliminate hydrogen gas generation in storage containers.
Automated feeding hoppers require predictable flow. Spherical atomized powders achieve tap densities above 1.45 g/cm³ and Hausner ratios below 1.18, eliminating bridging, hopper clogging, and erratic mold filling in production presses.
From renewable energy generation to high-integrity defense and metallurgical casting, pure aluminum powder functions as a high-density energy carrier and sintering agent.
In silicon wafer solar cell manufacturing, aluminum powder is dispersed in organic vehicles to produce conductive back contact paste. During firing at 750°C–850°C, the spherical powder melts, dissolving silicon to form an Al-Si eutectic layer that provides an indispensable Back Surface Field (p+ BSF), drastically lowering contact resistance and boosting photoelectric conversion efficiency.
PV Paste • 2-5μm SphericalIntegrated steelmaking operations utilize high-purity Al powder as an antioxidant in MgO-C and Al2O3-C refractories. At elevated temperatures (>600°C), aluminum reacts in situ with carbon and atmospheric gases to form Aluminum Carbide (Al4C3) and Aluminum Nitride (AlN), consuming oxygen, densifying the brick structure, and preventing steel penetration in ladles and tundishes.
Refractory Antioxidant • 45-75μmThe strong exothermicity of aluminum oxidation (ΔH = -1,675 kJ/mol) is harnessed in railway thermite welding kits (reacting with Iron Oxide Fe2O3 to create molten steel in seconds), mining explosive boosters, and solid propellant fuels. Precise granulometry guarantees controlled flame propagation rates and pressure-time curves without detonation instability.
Thermite & Energetics • High Active AlPure aluminum powder is classified under international transport codes as dangerous cargo (Dangerous When Wet). Ensuring seamless border customs clearance and warehouse storage requires verifiable maritime certifications.
Supplies are certified to UN 1396, Class 4.3, Packing Group II/III. We utilize hermetically sealed 50 kg or 200 kg galvanized steel drums with heavy-gauge polyethylene inner liners. Vacuum nitrogen purging is applied for fine cuts, preventing oxygen intrusion and eliminating moisture-induced hydrogen gas build-up over long maritime ocean voyages.
Every commercial consignment ships with a 16-section compliant GHS Safety Data Sheet (SDS), Batch Certificate of Analysis (COA) containing ICP impurity traces, Dangerous Goods Declaration (DGD), and CIQ inspection certificates. Third-party testing by independent surveyors (SGS, CCIC, Intertek) is routinely coordinated upon client request.
We assist European and North American buyers with EU REACH only-representative notifications and RoHS compliance documentation. Our hazardous cargo logistics teams arrange direct-vessel stowage on top deck away from heat sources, backed by pre-clearance dangerous goods packing certificates at Ningbo, Shanghai, and Qingdao ports.
Our engineering centers in China continue to push the thermodynamic boundaries of metal atomization to serve next-generation clean energy and ultra-high-temperature applications.
To support next-generation solid-state battery composite anodes and micro-electronic thermal management, our pilot production incorporates radio-frequency (RF) induction plasma spheroidization. This yields ultra-pure, perfectly round powders with D50 values below 1.5 μm, zero internal porosity, and exceptionally low oxygen pick-up (< 0.25%).
Horizon 2026: Plasma AtomizationTargeting the global push for low embodied carbon (Scope 3 emissions reduction), manufacturing protocols are transitioning toward hydro-powered electrolytic primary aluminum ingots from Southwestern China. This cuts the baseline carbon footprint of pure atomized aluminum from 14.5 kg CO2e/kg to under 4.2 kg CO2e/kg, fulfilling EU Carbon Border Adjustment Mechanism (CBAM) benchmarks.
CBAM Compliant Green AluminumAddressing storage stability and safety risks, our chemical laboratories are scaling nanometer-thin silane and fluoropolymer passivation treatments. This surface modification inhibits rapid hydrogen outgassing when powders encounter humid workshop atmospheres, allowing prolonged open-air feeder handling without sacrificing sintering reactivity.
Moisture-Resistant PassivationClear, direct answers for chemical engineers, sourcing directors, and freight forwarders evaluating Chinese pure aluminum powder shipments.
Every commercial batch is tested following the gas-volumetric displacement method (Reaction with hydrochloric acid / sodium hydroxide according to ISO 11536). Total aluminum is quantified via Inductively Coupled Plasma Optical Emission Spectroscopy (ICP-OES). Active aluminum represents the unoxidized, reactive metallic core. We guarantee active aluminum ≥ 98.5% for spherical atomized grades and ≥ 96.5% for fine pyrotechnic grades.
Standard catalog particle cuts (e.g., 100–200 mesh, 45μm, 30μm) typically dispatch within 10 to 14 working days from receipt of confirmed purchase order and LC/TT payment. Custom laser-diffraction cuts requiring dedicated air-classification sieving or argon atomization campaigns require 18 to 25 working days. Maritime transit times depend on destination ports (Europe: 28–35 days; US West Coast: 14–18 days; Southeast Asia: 5–8 days).
Commercial MOQ is 1,000 kg (1 metric ton) packed in 20 standard 50 kg steel drums on pallets. For laboratory qualification, technical line trials, or binder formulation matching, sample kits of 1 kg to 5 kg are available for qualified industrial entities, complete with a lot-specific Certificate of Analysis. Courier shipments of dangerous goods (UN 1396) must strictly comply with IATA hazmat sample regulations.
Our drums feature conductive conductive-grounded sealing rims, internal antistatic polyethylene liner barriers, and desiccant packs. Fine grades are inerted under a dry nitrogen blanket before mechanical sealing. All containers are certified against dropping, pressure variance, and water immersion per UN 1396 test requirements.
We provide standard export transactions under Incoterms 2020 including FOB (Qingdao, Shanghai, Tianjin), CFR, and CIF (to any major global maritime terminal). Commercial terms include Irrevocable Documentary Letter of Credit (L/C at sight) opened via prime global banks, or structured Telegraphic Transfer (T/T). Long-term supply contracts can benefit from fixed 6-month formula pricing indexed to metal exchanges.
Complete portfolio of specialty alloy powders, electronic processing chemicals, liquid synthetic rubbers, and functional polyethers supplied to international manufacturing partners.
Connect directly with our engineering sales desk for lot-specific COA data, particle size distribution curves (Malvern), tailored sieve fraction availability, and CIF sea freight cost calculations to your destination port.
