Super Duplex Steel Fasteners: Strength, Coating Options & Usage
Super Duplex Steel Fasteners are becoming increasingly popular across the world because of their superior strength, corrosion resistance, and performance in extreme environments. These fasteners are specifically designed for industries that cannot afford failures, such as oil & gas, marine, chemical, and desalination plants.
Understanding the Strength of Super Duplex Steel Fasteners
Super Duplex Steel Fasteners are known for their dual-phase microstructure, a perfect balance of austenite and ferrite. This structure gives them exceptional tensile strength, almost twice that of conventional stainless steel.
Why They Are Stronger Than Ordinary Fasteners
- High yield and tensile strength
- Excellent resistance to stress corrosion cracking
- Good toughness and durability under high pressure
- Ability to withstand harsh, chlorinated, or acidic conditions
In offshore and marine environments, most ordinary stainless-steel fasteners break down due to chloride-induced corrosion. But Super Duplex Steel Fasteners remain strong and stable for years, reducing maintenance costs and improving project reliability.
Superior Corrosion Resistance
One of the biggest reasons industries prefer these fasteners is that super duplex steel offers world-class protection against:
- Pitting
- Crevice corrosion
- Uniform corrosion
- Erosion in flowing seawater
- High-temperature chemical exposure
This corrosion-resistant nature makes super duplex fasteners ideal for long-term, high-value infrastructure projects.
Coating Options for Super Duplex Steel Fasteners
Although the base metal itself is highly corrosion-resistant, coatings help enhance performance, aesthetics, and longevity.
Popular Coating Types
1. PTFE / Teflon Coating
- Low friction
- Prevents galling
- Suitable for high-temperature bolting
2. Xylan Coating
- Thin layer
- Strong chemical resistance
- Ideal for controlled tightening (torque management)
3. Hot-Dip Galvanised (HDG)
- Zinc layer for outdoor environments
- Cost-effective coating option
4. Electro-polished Finish
- Smooth and shiny surface
- Used in food, pharma, and hygienic applications
5. Passivation
- Removes surface impurities
- Boosts corrosion resistance
These coatings can be chosen based on your industry, budget, and environmental conditions.
Where Are Super Duplex Steel Fasteners Used?
Super Duplex Steel Fasteners are widely used in:
- Offshore oil platforms
- Subsea equipment and pipelines
- Chemical processing plants
- Desalination plants and RO systems
- Pressure vessels and boilers
- Marine engineering
- Power generation units
Their ability to handle extreme pressure, seawater exposure, and harsh chemicals makes them ideal for critical, safety-sensitive applications.
Why Buy Super Duplex Steel Fasteners from Zeon Exports?
Zeon Exports is one of India’s most trusted manufacturers and global suppliers of Super Duplex Steel Fasteners. With years of experience in steel manufacturing and exports, the company ensures every product meets international standards and customer requirements.
What Zeon Exports Offers
- Fasteners in all grades: Super Duplex 2507, UNS S32750, UNS S32760
- Bolts, nuts, washers, studs, threaded rods, screws, anchors & custom fasteners
- ASTM, ASME, DIN, ISO-certified manufacturing
- Coating & finishing options: PTFE, Xylan, Zinc, HDG, Electropolish, Passivation
- Bulk export to more than 40+ countries
- 100% material traceability & test certifications
Whether you need fasteners for marine, petrochemical, construction, or offshore applications, Zeon Exports supplies high-precision, export-grade materials with timely delivery.
Buy Now – Your Project Deserves Premium-Grade Fasteners
Choosing the right fastener can make or break the lifespan of your project. At Zeon Exports, every fastener is produced with strict quality control and global standard testing.
- Guaranteed durability
- Competitive pricing for bulk orders
- Custom sizes & drawings welcome
- Worldwide shipping available
Buy Super Duplex Steel Fasteners today from Zeon Exports and secure long-lasting performance for your project.
Call Now: +91 9819 39 2850
Visit Now: www.zeonexports.com
Final Thoughts
If your industry requires high strength, excellent corrosion resistance, and reliability in demanding applications, Super Duplex Steel Fasteners are the perfect choice. They offer long life, reduced maintenance, and superior mechanical performance, making them ideal for both small and large-scale engineering needs.
For trusted quality and global delivery, Zeon Exports is your one-stop solution for all types of super duplex and special alloy fasteners.
FAQ
1. Does Zeon Exports offer custom-sized fasteners?
we provide tailor-made sizes, threading, coatings, and drawings as per project requirements.
2. Do Super Duplex Steel Fasteners resist seawater corrosion?
Absolutely — they are one of the best choices for marine and offshore applications.
3. Can I request PTFE or Xylan coatings?
Zeon Exports offers multiple coating and finishing options.
4. Do the fasteners meet ASTM and DIN standards?
Every fastener is produced according to ASTM, ASME, DIN, and ISO standards.
5. How can I place an order?
Simply contact Zeon Exports through the website or request a quotation for bulk orders.