Precision-Rolled Inconel 718 Plate and Sheet Corrosion & Heat Resistant Nickel Alloy

Precision-Rolled Inconel 718 Plate and Sheet Corrosion & Heat Resistant Nickel Alloy

Products Specification

Precision-Rolled Inconel 718 Plate and Sheet – Corrosion & Heat Resistant Nickel Alloy

Inconel 718 is a premium nickel-chromium-based superalloy engineered for extreme environments where resistance to corrosion, oxidation, and high-temperature mechanical degradation is non-negotiable. When processed through precision rolling techniques, Inconel 718 plate and sheet achieve exceptional dimensional accuracy, uniform microstructure, and enhanced surface integrity—making them ideal for aerospace turbines, nuclear reactors, downhole oil & gas tools, and advanced chemical processing equipment.

This product overview details the composition, properties, standards, applications, and advantages of precision-rolled Inconel 718 plate and sheet, optimized for performance-critical industries requiring tight tolerances and long-term reliability.

Why Precision Rolling Matters

Standard hot- or cold-rolled nickel alloy products may exhibit thickness variations, surface imperfections, or inconsistent grain flow that compromise performance in high-stress applications. Precision rolling—a controlled cold-working process followed by stress-relief or aging heat treatments—delivers:

• Tighter thickness tolerances (±0.02 mm achievable)
• Superior flatness and surface finish (Ra ≤ 0.8 µm possible)
• Enhanced mechanical uniformity across the entire sheet/plate
• Improved fatigue and creep resistance due to refined grain structure
• Reduced need for secondary machining, lowering production costs

Material Standards & Designations

Precision-rolled Inconel 718 meets or exceeds global specifications for critical applications:

Chemical Composition (Weight %)

The strength and stability of Inconel 718 stem from its precisely balanced chemistry:

Physical Properties

Excellent thermal stability ensures minimal distortion during rapid heating/cooling cycles—critical in jet engines and rocket propulsion systems.

Mechanical Properties (Aged Condition – ASTM B670 / AMS 5596)

Even at 704°C (1300°F), Inconel 718 retains over 70% of its room-temperature strength.

Available Forms & Dimensions (Precision-Rolled)

Sheet

• Thickness: 0.1 mm to 6.0 mm
• Width: up to 1500 mm
• Length: up to 3000 mm
• Tolerances: ±0.02 mm (for thin gauges <1.0 mm)
• Surface Finish: Bright annealed, 2B, BA, or custom polished

Plate

• Thickness: 6.0 mm to 100+ mm
• Width: 1000–2000 mm
• Length: 2000–6000 mm
• Flatness: ≤ 2 mm/m (standard); ≤ 0.5 mm/m (precision grade)

Custom cutting (laser, waterjet, shearing) and edge conditioning available.

Corrosion & Oxidation Resistance

Inconel 718 excels in aggressive environments:

• Oxidation Resistance: Stable up to 980°C (1800°F) in air
• Pitting & Crevice Corrosion: Excellent in seawater and chloride solutions
• Acid Resistance: Performs well in sulfuric, phosphoric, and organic acids
• Sour Service: Compliant with NACE MR0175 for H₂S-containing oil & gas wells
• Stress Corrosion Cracking (SCC): Highly resistant in caustic and marine atmospheres

This makes it suitable for offshore platforms, chemical reactors, flue gas scrubbers, and desalination plants.

Key Applications

Aerospace & Defense

• Turbine discs, blades, and casings
• Afterburner components and thrust reversers
• Missile and rocket motor housings
• High-speed airframes and landing gear fittings

Energy & Oil & Gas

• Downhole safety valves and packers
• Subsea control modules and manifolds
• Nuclear fuel element spacers and core supports
• Geothermal well casings

Industrial & Medical

• Cryogenic tanks (liquid nitrogen/oxygen)
• High-temperature furnace fixtures
• Precision springs and fasteners
• Biocompatible surgical instrument components

Fabrication Guidelines

Machining

• Use carbide or ceramic tooling
• Low cutting speeds (10–30 m/min), high feed rates
• Copious coolant to manage work hardening

Forming

• Best performed in solution-annealed condition
• Springback must be accounted for in bending operations
• Minimum bend radius: 2× material thickness

Welding

• Preferred methods: GTAW (TIG), GMAW (MIG), EBW
• Filler metal: ERNiFeCr-2 (AWS A5.14) or matching composition
• No preheat required
• Post-weld aging recommended for full strength recovery
• Avoid excessive heat input to prevent liquation cracking

Quality Assurance

Every lot of precision-rolled Inconel 718 undergoes:

• Spectrometric chemical verification
• Tensile and hardness testing
• Ultrasonic inspection (per AMS 2631 or customer spec)
• Surface defect screening (eddy current or visual)
• Full documentation per EN 10204 3.1 or 3.2

Certifications include AS9100 (aerospace), ISO 9001, and PED 2014/68/EU compliance.

Conclusion

Precision-rolled Inconel 718 plate and sheet represent the pinnacle of nickel superalloy technology—combining exceptional heat resistance, unmatched corrosion performance, and micron-level dimensional control. Whether your application demands reliability at -253°C in space or 700°C in a combustion chamber, this material delivers consistent, certified performance under the most punishing conditions.

Contact us for technical data sheets, sample requests, or custom precision-rolled Inconel 718 in sheet or plate form—available with full certification and global shipping.

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