Precision-Engineered Inconel Alloy 625® Hex Nuts

Inconel Alloy 625®: Information, Composition & Properties for Hex Nuts

Inconel Alloy 625® is a high-performance nickel-based superalloy engineered for extreme environments that demand exceptional strength and superior corrosion resistance. Its unique properties are derived from a balanced microstructure that remains stable from cryogenic temperatures up to 2000°F (1093°C). This makes Alloy 625 hex nuts an essential component for critical assemblies in aerospace, marine, and chemical processing industries, where standard stainless steel fasteners would fail due to oxidation or mechanical stress.

Composition:

The alloy is primarily composed of nickel (minimum 58%), chromium (20-23%), and molybdenum (8-10%). A key defining characteristic is the addition of niobium (3.15-4.15%), which works in tandem with molybdenum to stiffen the alloy’s matrix through solid solution strengthening. This internal architecture provides high tensile and yield strength without the need for additional precipitation-hardening heat treatments.

Properties:

• Outstanding Corrosion Resistance: The high nickel and chromium content provides excellent resistance to a wide range of severely corrosive environments, while molybdenum prevents pitting and crevice corrosion.
• High Strength and Toughness: These hex nuts exhibit a typical ultimate tensile strength of 120-160 ksi, maintaining their integrity under high pressure and significant mechanical loads.
• Exceptional Thermal Stability: Alloy 625 resists oxidation and scaling at elevated temperatures and remains resistant to chloride-ion stress corrosion cracking, making it the premier choice for seawater and offshore applications.
• Excellent Fatigue Resistance: The material is designed to withstand cyclic thermal and mechanical loading, ensuring long-term reliability in safety-critical assemblies such as jet engines and nuclear reactors.

At West Special Fasteners, we take pride in every Inconel Alloy 625® hex Nut we produce, no matter the application.

99% on-time delivery

At West Special Fasteners, we deliver precision-engineered fasteners with a proven 99% on-time delivery record, ensuring your projects stay on schedule. With lead times as short as 4 weeks for full-service orders, we provide unmatched reliability for industries where timing is critical.

• Minimise delays – Receive your special fasteners exactly when needed, helping you avoid costly project interruptions.
• Support critical operations – Our dependable delivery is essential for sectors like defence, offshore, and renewables, where timing is non-negotiable.
• Boost project efficiency – Reliable deliveries streamline your workflow, allowing you to focus on execution without supply chain concerns.
• Maintain your reputation – Trust in our punctuality to ensure your commitments to your clients are met, every time.
• Transparent communication – Realistic timelines and proactive updates at every stage.
• Efficient production – Our advanced facilities and streamlined processes enable us to deliver on time, even for complex and bespoke projects.

Our ability to always deliver on time sets us apart in the fastener industry. While with many competitors you can face frequent delays, we ensure your orders are delivered with precision and professionalism – backed by our fully traceable production process and industry-leading expertise.