Industrial-grade spherical metal feedstocks engineered for Laser Powder Bed Fusion (LPBF), Electron Beam Melting (EBM), Direct Energy Deposition (DED), and Advanced MIM.
Uncompromising material stability, gamma double-prime (γ") precipitation kinetics, and microstructural densification via high-energy beam consolidation.
Inconel 718 (UNS N07718) derives its extreme yield strength (>1100 MPa at room temperature, >950 MPa at 650°C) through coherent metastable body-centered tetragonal (BCT) γ" [Ni3Nb] phases coupled with face-centered cubic (FCC) γ' [Ni3(Al,Ti)]. Powder bed fusion preserves fine cellular-dendritic sub-grain architecture during rapid quenching (10^5 to 10^6 K/s), preventing premature niobium segregation.
The alloy retains superior creep rupture resistance at sustained service temperatures up to 700°C (1290°F), resisting passivating depletion via dense chromia (Cr2O3) scale formation. Additive manufacturing eliminates macro-segregation typically encountered in massive vacuum arc remelted (VAR) ingots, minimizing the detrimental Laves phase [(σ,Fe,Cr)2(Mo,Nb,Ti)].
Leveraging multi-laser LPBF with Gaussian beam profiles (80-100 μm spot diameter) enables near full relative density (≥99.85%). Post-processing paths consisting of Hot Isostatic Pressing (HIP at 1160°C, 100-120 MPa in argon atmosphere) completely close gas entrapment pores and micro-fissuring, exceeding wrought AMS 5662 mechanical specifications.
Tensile Strength (Yield)
Max Continuous Duty Temp
As-Sintered / LPBF Density
Oxygen Pick-up Threshold
| Material Grade | Composition Core (wt%) | Density (g/cm³) | Yield Strength (MPa, 20°C) | Thermal Cond. (W/m·K) | Dominant Additive Route |
|---|---|---|---|---|---|
| Inconel 718 (AMS 7000 / UNS N07718) | Ni (50-55), Cr (17-21), Nb+Ta (4.75-5.5), Mo (2.8-3.3) | 8.19 | 1100 - 1240 (Heat Treated) | 11.4 | LPBF, DED, EBM |
| Inconel 625 (UNS N06625) | Ni (Bal), Cr (20-23), Mo (8-10), Nb (3.15-4.15) | 8.44 | 720 - 850 (As-Built) | 9.8 | LPBF, Laser Cladding |
| Titanium Ti-6Al-4V ELI (Grade 23) | Ti (Bal), Al (5.5-6.5), V (3.5-4.5), O (≤0.13) | 4.43 | 830 - 910 | 6.7 | LPBF, EBM |
| AlSi10Mg Aluminum Alloy | Al (Bal), Si (9.0-11.0), Mg (0.2-0.45), Fe (≤0.55) | 2.68 | 230 - 270 | 130 - 150 | LPBF |
| Cobalt-Chrome (CoCrMo) | Co (Bal), Cr (27-30), Mo (5-7) | 8.30 | 600 - 820 | 14.8 | LPBF, Binder Jetting |
Inconel 718 additive components are shifting from exploratory prototypes to large-scale, flight-critical production runs across North America, the European Union, and Asia-Pacific.
Tier-1 aerospace and propulsion contractors enforce AMS 7000, AMS 7001, and ASTM F3055 compliance. Sourcing directors demand comprehensive Certificate of Analysis (COA) for every powder batch, covering ICP-OES elemental assay, interstitial carbon/sulfur combustion, and inert gas fusion (IGF) for low oxygen/nitrogen levels.
Global procurement teams prioritize circular powder management protocols. Controlled multi-cycle recycling loops (up to 15-20 sieving iterations) must guarantee minimal oxygen pick-up (<250 ppm) and verify sphericity preservation without particle agglomeration, satellites, or hollow internal voids.
Demand is surging for large-format LPBF equipment featuring 4 to 12 coordinated lasers (e.g., 500W to 1kW fiber lasers). This transition requires custom-engineered powder particle size distributions (PSD 15-53 μm or 20-63 μm) exhibiting superior Hall flow rates (<16 s/50g) to prevent layer recoater banding defects.
Buyers no longer purchase simple printed shapes. The procurement mandate spans end-to-end downstream processing: Vacuum Stress Relieving (AMS 2774), Two-Step Aging (720°C × 8h furnace cool to 620°C × 8h), High-Precision 5-Axis CNC Milling of datums, and non-destructive CT scanning.
Harnessing dual-heritage Japanese process discipline with China's automated mega-scale atomization, vertical integration, and streamlined logistics.
Advanced Chinese industrial manufacturing installations employ Vacuum Induction Melting Inert Gas Atomization (VIGA) and Electrode Induction Gas Atomization (EIGA). Melting occurs under deep vacuum (<10^-2 mbar) with ultra-pure supersonic argon gas jet impingement, yielding highly spherical morphology with zero tungsten inclusion risks.
Factory 4.0 facilities utilize automated ultrasonic air-classifier lines operating within continuous sealed argon envelopes. This completely removes sub-micron satellites and fines (<10 μm) while preventing moisture absorption and airborne oxidation, providing outstanding packing density (>4.4 g/cm³ tap density).
Inheriting precision manufacturing workflows honed since 1997 and enhanced through Toyo Aluminium K.K. joint equity partnerships since 2009. Production operations follow ISO 9001:2015, ISO 14001:2015, and strict Safe Production licensing, ensuring every shipment delivers full batch reproducibility.
Solving complex thermal, pressure, and corrosive fatigue bottlenecks across space exploration, energy infrastructure, and extreme motorsport.
Regeneratively cooled rocket combustion chambers and injector heads. Inconel 718 3D printing enables integrated double-curved cooling channels with 0.4 mm internal wall thicknesses, reducing total engine component part count from 110 brazed pieces down to a single monolithic print.
Downhole sour-gas well completion tools, safety valves, and subsea manifold trees operating in environments rich in hydrogen sulfide (H2S), CO2, and chlorides. Conforms to NACE MR0175/ISO 15156 limits when aged correctly to prevent sulfide stress cracking.
Static stator vanes, fuel injection nozzles, and micro-turbine recuperator matrices. The thermal fatigue durability of 3D printed Inconel 718 allows turbine combustion chambers to endure elevated firing temperatures, increasing fuel combustion efficiency by up to 14%.
Formula 1 and hypercar lightweight turbocharger housings, wastegate valves, and inconel exhaust manifolds. 3D printing enables variable shell thickness down to 0.7 mm with internal guide vanes, shaving up to 45% component weight compared to traditional sand-cast nickel housings.
Every single batch undergoes exhaustive particle morphology, interstitial element, and flowability characterization conforming to ASTM, ISO, and AMS aerospace mandates.
Conducted in accordance with ISO 13320 using Malvern Mastersizer instruments. Standard LPBF cuts maintain typical distributions: D10 = 16-20 μm, D50 = 30-34 μm, D90 = 48-53 μm. Steep PSD slopes ensure tight inter-particle packing and minimal fine dust hazard during powder handling.
Evaluated per ASTM B213 (Hall Flowmeter) and ASTM B417. Premium atomized Inconel 718 demonstrates instantaneous flow under gravity with average speeds of 13.5 to 15.5 seconds per 50 grams, safeguarding consistent recoater blade leveling across 500 mm wide build platforms.
Scanning Electron Microscopy (SEM) imaging verifies an ultra-high sphericity coefficient (>0.92) with near-zero satellite bonding. Cross-sectional micro-CT inspection ensures minimal argon entrapped gas pores within virgin powders, preventing gas porosity transfer to the final melted component.
Direct technical answers addressing metallurgy, heat treatment cycles, supplier qualification, and dangerous-goods export compliance.
Inconel 718 is a precipitation-hardenable superalloy reinforced by coherent γ" [Ni3Nb] and γ' [Ni3(Al,Ti)] phases, yielding tensile strengths up to 1350 MPa after double-aging. Inconel 625 relies primarily on solid-solution strengthening from Mo and Nb, achieving approximately 800-900 MPa. For high-stress dynamic components like impellers and blisks, Inconel 718 provides substantially superior creep-rupture life up to 650°C.
A standard schedule per AMS 2774 / AMS 5662 involves: 1) Stress Relief at 980-1065°C in argon for 1-2 hours to homogenize the dendritic microstructure and dissolve brittle Laves phases; 2) Optional Hot Isostatic Pressing (HIP) at 1160°C / 100 MPa for 4 hours; 3) Double Aging: 720°C for 8 hours, furnace cooled at 50°C/hour to 620°C, held for 8 hours, followed by air cooling.
VIGA yields spherical powders at commercial quantities with balanced cost-efficiency. PREP (Plasma Rotating Electrode Process) generates satellite-free powder with the lowest porosity, but at higher unit economics. Our optimized VIGA lines incorporate refined de Laval supersonic gas nozzles that minimize internal gas hollows, achieving printed parts exceeding 99.85% as-printed density.
Nickel and superalloy powders are classified based on particle fineness. While coarse granules are non-regulated, fine metal powders (<45 μm) may fall under UN3089 (Metal powder, flammable, n.o.s.) Class 4.1. We supply UN-certified hermetically sealed steel drums with argon inert gas backfilling, SDS documentation, and compliant dangerous-goods declarations for seamless global transit.
We provide comprehensive OEM/ODM metallurgical engineering. Our facility accommodates pilot vacuum induction heats from 50 kg test charges up to multi-ton continuous production batches. We customize alloy compositions (including Nb, Mo, Ti, and Ta modifications), tailor PSD boundaries to customer re-coater systems, and assist in build parameter development.
Inconel 718 exhibits severe work hardening and low thermal conductivity, demanding rigid CNC setups, positive rake angles, high-pressure through-spindle coolant, and ceramic or coated carbide tooling. Crucially, subtractive machining should typically be conducted after solution annealing (when hardness is lower, ~30-35 HRC) prior to the final double-aging treatment (~42-47 HRC).
Explore our complete spectrum of atomized spherical powders for additive manufacturing, thermal management, powder metallurgy, and composite matrices.
