UNS R30783 - INCONEL 783 Nickel-Cobalt Superalloy
UNS R30783 is the Unified Numbering System designation for INCONEL 783, a nickel-cobalt-iron superalloy with an exceptionally low coefficient of thermal expansion combined with high strength at elevated temperatures. INCONEL 783 was specifically engineered for gas turbine structural components that must maintain precise dimensional tolerances across a wide temperature range.
Material per UNS R30783 (INCONEL 783) is qualified to AMS 5940 and is used in gas turbine engine frames, vane carriers, rings, and other structural components where both high strength and dimensional stability under thermal cycling are critical design requirements.
Material OverView
INCONEL 783 (UNS R30783) achieves its unique properties through a combination of controlled alloy additions: cobalt and iron contributions to strength, niobium and aluminum for precipitation hardening, and a carefully balanced composition that minimizes CTE while maintaining structural integrity. This makes it the preferred material for components bridging different coefficient of expansion materials in gas turbine hot sections.
Applications of UNS R30783
UNS R30783 (INCONEL 783) is used in:
- Gas Turbine Engine Structural Frames and Vane Carriers
- Turbine Rings and Cases Requiring CTE Matching
- High-Temperature Aerospace Hardware
- Steam Turbine Components with Dimensional Stability Requirements
Certified Material for Critical Service
Fighter Jet Metals supplies UNS R30783 with:
- Full certification and traceability
- Heat treatment and mechanical test reports
- Compliance with applicable material standards
- Aerospace-grade quality assurance
Each batch is sourced from approved manufacturers and tested to specification requirements.