Inconel 718 Nickel Alloy Forged Round Bar ASTM B637 AMS 5662 for High Temperature Aerospace Applications

Inconel 718 Nickel Alloy Forged Round Bar

Inconel 718 (UNS N07718 / W.Nr. 2.4668) is a precipitation-hardenable nickel-chromium alloy that combines high strength with excellent corrosion resistance at temperatures up to 700°C. Our forged round bars are manufactured in strict compliance with ASTM B637 and AMS 5662/5663 standards, making them the ideal choice for demanding aerospace, oil & gas, and power generation applications.

Key Features

• Exceptional High Temperature Strength: Maintains mechanical integrity at elevated temperatures up to 700°C with tensile strength ≥1275 MPa and yield strength ≥1035 MPa at room temperature.
• Superior Corrosion Resistance: Excellent resistance to oxidation, pitting, and stress-corrosion cracking in aggressive environments including sour gas and seawater.
• Precipitation Hardenable: Achieves optimal mechanical properties through solution annealing and aging heat treatment, eliminating the need for complex hardening processes.
• Double Melting Process: Produced via VIM (Vacuum Induction Melting) followed by ESR (Electroslag Remelting) or VAR (Vacuum Arc Remelting) to ensure superior cleanliness and structural uniformity.
• Wide Dimensional Range: Available in diameters from 10mm to 500mm and lengths from 1000mm to 6000mm, suitable for various machining and fabrication requirements.

Technical Specifications

Applications

• Aerospace: Gas turbine engine components, compressor discs, shafts, fasteners, and casings.
• Oil & Gas: Downhole tools, valve stems, wellhead components, and high-pressure piping systems.
• Power Generation: Steam turbine blades, nuclear reactor components, and heat exchanger parts.
• Marine: Propeller shafts, pump shafts, and seawater-exposed fasteners.

Quality Assurance

Every batch undergoes rigorous quality testing including ultrasonic testing (UT), mechanical property verification, chemical composition analysis, and dimensional inspection. Full mill test certificates (MTC) per EN 10204 3.1 are provided with each shipment.

Packaging & Delivery

Products are securely packed in plywood cases or on wooden pallets with waterproof wrapping and export-grade protection. Standard delivery within 15-30 working days depending on order quantity and specification requirements.