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Ni
Ni-BASED SUPERALLOY SYSTEM

Nickel Superalloys

Hot-section alloys for turbomachinery.   Gas-atomized Inconel 625, 718, 738, 939, Hastelloy X, Haynes 230, Rene 80, CM247 for LPBF, EBM, DED, and PM-HIP. AMS 5662/5663/5664/5599 chemistry with hot-tear-controlled printability.

Program Intake Program Tiers
Grades
625 · 718 · 738 · 939 · HX · 230
Standards
AMS 5662/63/64 · 5599 · 5754
PSD cuts
15–45 · 20–63 · 45–106 μm
Process
VIM-VAR · GA · PA
Lead time
4 weeks standard
Traceability
VIM heat → GA lot → PO
01METALLURGY

Nickel superalloys operate structurally at 650–1050°C, well above steels and titanium. They are the working alloys of the aviation gas turbine — every high-pressure turbine blade, combustor liner, and hot-section vane in a commercial engine is a nickel superalloy. Additive manufacturing has moved from repair (DED cladding) to full production (LPBF fuel nozzles and combustor liners on CFM LEAP and GE9X).

The powder-metallurgy nickel-superalloy supply chain is narrow — a small number of VIM-VAR mills and gas atomizers world-wide produce program-tier material, and qualification into that network takes years. We hold qualified stock of 625, 718, and Hastelloy X — the "big three" of AM production — with 738, 939, 230, Rene 80, and CM247 available on program qualification.

02SPECIFICATION
Chemistry — Inconel 625
AMS 5599 · ASTM B443 · Ni bal, Cr 20–23, Mo 8–10, Nb 3.15–4.15
Chemistry — Inconel 718
AMS 5662 (annealed) · AMS 5663 (aged) · Ni bal, Cr 17–21, Nb 4.75–5.5
Chemistry — Hastelloy X
AMS 5754 · Ni bal, Cr 20.5–23, Mo 8–10, Fe 17–20
Chemistry — Inconel 738
GE B50TF15 · Ni bal, Cr 15.7–16.3, Co 8–9, Al 3.2–3.7
Chemistry — Inconel 939
Ni bal, Cr 22–22.5, Co 18.5–19.5, γ' strengthener
Oxygen
≤ 150 ppm
Nitrogen
≤ 50 ppm
Morphology
Spherical (GA), low satellite
Apparent density
Reported per lot COA under program qualification
Hall flow
Reported per lot COA under program qualification
PSD (LPBF)
Reported per lot COA under program qualification
Traceability
VIM-VAR heat → GA lot → screen lot → PO
03GRADES & ALLOYS
Inconel 625
Solid-solution strengthened. AMS 5599. Corrosion-critical, oil & gas.
Inconel 718
Age-hardened. AMS 5662/5663. The workhorse aerospace superalloy.
Inconel 738
γ' strengthened polycrystalline. HPT blades, industrial gas turbines.
Inconel 939
High-Cr γ' alloy. Emerging AM alternative to 738 with improved printability.
Hastelloy X
AMS 5754. Combustor liners, exhaust systems. High oxidation resistance.
Haynes 230
Solid-solution + carbide. Higher-temperature capability than HX.
Rene 80 / CM247
DS/SX-derivative alloys, cast-equivalent AM. Program qualification.
Waspaloy
AMS 5586. Turbine discs and hot-section fasteners.
04PROCESSING ROUTES
LPBF (625, 718, HX)
Fully qualified production process. Post-HIP + heat treat.
LPBF (738, 939)
Requires hot-tear-controlled parameter sets. Qualified atomizers in our network supply LPBF-tuned lots.
EBM
Vacuum atmosphere, coarser PSD. Well-suited to hot-tear-prone alloys.
DED
Repair route for turbine blade tips and airfoils.
PM-HIP
Full-density near-net-shape for large turbine discs.
Binder jet + sinter
Emerging route for complex geometries.
05APPLICATIONS
Aerospace
HP Turbine Blades
738, 939, and Rene 80 for polycrystalline HP blades. LPBF production certified on multiple platforms.
Aerospace
Combustor Liners
Hastelloy X and Haynes 230 combustor liners. Cooling-hole complexity enabled by LPBF.
Aerospace
Fuel Nozzles
Inconel 718 LPBF fuel nozzles. CFM LEAP program-heritage geometry.
Energy
Industrial Gas Turbines
Frame-size turbine components. Longer time-on-wing than aviation, similar alloys.
Oil & Gas
Downhole Components
Inconel 625 for sour-service and high-pressure wellhead components.
Marine
Naval Propulsion
Waspaloy and 718 for turbine and pump components in naval systems.
06QUALITY CONTROL
Chemistry
LECO (O/N/C) · ICP-OES for all alloying elements · GDMS on request
PSD
Laser diffraction per ASTM B822
Morphology
SEM with circularity index per lot
Rheology
Revolution powder-analyzer flow index for LPBF-optimized lots
Melt route
VIM-VAR certification per lot
Cleanliness
Sieve residue analysis, hot-tear crack-susceptibility test on request
Every lot ships with a mill-certified Certificate of Conformance (CofC) documenting chemistry, PSD, morphology, flow, and traceability from mill heat through atomization to PO. Retained samples are held per lot for program-life duration.

Move it to a
program.

MPS-1 qualification, MPS-2 production, or MPS-3 strategic supply. 4-week standard lead time on qualified stock.

Program Intake Compare Program Tiers