Inconel 718 Nickel Alloy Valve Stem for Severe Corrosion Environments and High Pressure Control Valves

ASTM B637 Inconel 718 (UNS N07718) nickel alloy valve stems are made from precipitation-hardened nickel alloy, featuring high strength, excellent corrosion resistance, fatigue resistance, and dimensional stability. They are designed for high-pressure, high-temperature, and severe service conditions, widely used in oil & gas, offshore, chemical processing, and industrial valve applications.

Key Features

• High strength and excellent mechanical properties.
• Excellent corrosion and oxidation resistance.
• Excellent high-temperature strength and creep resistance.
• Outstanding fatigue resistance and long service life.
• Excellent dimensional stability after heat treatment.
• Suitable for high-pressure, high-temperature, and severe service conditions.
• Precision machining ensures reliable sealing and stable operation.

Typical Applications

• High-pressure oil & gas valves and wellhead equipment
• Offshore platforms and subsea valve systems
• Chemical processing equipment and corrosion-resistant valves
• Critical valve components for petrochemical and energy industries
• High-temperature and high-pressure industrial control valve systems
• Aerospace and special engineering equipment

Chemical Composition (wt%)

Mechanical Properties (Solution Annealed + Age Hardened)

Precautions

• Select suitable operating temperature, pressure, and service conditions.
• Avoid work hardening and maintain dimensional accuracy during machining.
• Protect surface quality during installation to ensure sealing performance.
• Monitor performance changes during long-term high-temperature service.

Quality Assurance

All DINGSCO Inconel 718 (UNS N07718) valve stems are manufactured in accordance with ASTM B637 and are suitable for API 6A high-pressure valve applications. Inspections include PT (ASTM E165/E165M), UT (ASTM A388), tensile testing (ASTM E8/E8M), OES chemical analysis, PMI, hardness testing (ASTM E18), and dimensional verification. Full material traceability is maintained throughout the manufacturing process, with MTRs, heat-treatment records, and NDT reports available upon request.

Contact our sales team today for a competitive quote, technical datasheet, or to discuss your custom forging requirements.