Precision-Engineered Super Duplex Hex Bolts

Super Duplex Information, Composition & Properties

Super Duplex stainless steels are highly engineered alloys that offer superior corrosion resistance and strength compared to standard austenitic or ferritic stainless steels. Their unique properties arise from a balanced microstructure containing roughly equal proportions of austenite and ferrite.

Composition:
Super Duplex stainless steels typically contain higher levels of chromium (24-28%), molybdenum (3-5%), and nitrogen (0.2-0.35%) than other stainless steels. These elements contribute significantly to their enhanced properties. Nickel content is also present (4-7%), along with trace amounts of other elements.

Properties:

• Excellent Corrosion Resistance: The high chromium, molybdenum, and nitrogen content provides exceptional resistance to pitting, crevice corrosion, and stress corrosion cracking in aggressive environments, particularly those containing chlorides.
• High Strength: Super Duplex alloys exhibit significantly higher tensile and yield strength than conventional stainless steels, making them suitable for demanding structural applications.
• Good Ductility and Toughness: Despite their high strength, Super Duplex steels retain good ductility and toughness, even at low temperatures.
• Erosion-Corrosion Resistance: They offer good resistance to erosion-corrosion, which is crucial in applications involving abrasive fluids.

Why Super Duplex is good for Hex Bolts:

The combination of superior strength and outstanding corrosion resistance makes Super Duplex an ideal material for hex bolts in critical applications. These bolts are particularly well-suited for:

• Marine and Offshore Environments: Resisting saltwater corrosion and high mechanical stresses.
• Chemical Processing Plants: Withstanding aggressive chemical media.
• Oil & Gas Industry: Enduring corrosive hydrocarbons and high-pressure conditions.
• Infrastructure Projects: Providing long-term durability in challenging outdoor or industrial settings. By utilising Super Duplex hex bolts, industries can ensure the integrity and longevity of their structures and equipment, minimising maintenance and maximising safety.

At West Special Fasteners, we take pride in every Super Duplex Hex Bolt we produce no matter how big or small 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.