Duplex Steel Bolt UNS S32205 for Offshore and Chemical Industry
url-slug: duplex-steel-bolt-uns-s32205
Our duplex steel bolts, made from UNS S32205 (1.4462), combine high mechanical strength with superior resistance to stress corrosion cracking. They are ideal for offshore platforms, chemical processing plants, and other chloride-rich environments. Manufactured to ISO, DIN, and ASTM standards.
Key Selling Points
- Superior corrosion resistance: Duplex microstructure provides excellent resistance to chloride stress corrosion cracking and pitting.
- High strength: Approximately double the yield strength of standard stainless steels, allowing reduced bolt sizes.
- Cost-effective: Lower alloy content than nickel-based alloys, offering a balanced performance-to-cost ratio.
- Global compliance: Meets ISO, DIN, ASTM, and JIS standards for international projects.
- Anti-fatigue: High fatigue strength ensures reliability under cyclic loading.
- Customizable: Available in various head types and dimensions to suit specific engineering needs.
Technical Specifications
| Dimension Range | M2 – M160 |
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| Length Range | 6 mm – 300 mm |
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| Mechanical Grades | A4-80, D6-80, D6-100 |
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| Standards | ISO, DIN, ASTM, ASME, ANSI, JIS |
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| Thread Tolerance | 6g / 2A precision |
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| Materials | Duplex steel UNS S32205 (1.4462), UNS S32750 (2507) |
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| Surface Treatments | Passivation, natural finish |
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Models and Options
Available in hex, flange, T-bolt, U-bolt, anchor, and foundation bolt types. Custom dimensions and thread lengths can be supplied.
Materials and Structure
Duplex steels offer a two-phase microstructure of austenite and ferrite, providing an optimal combination of strength and corrosion resistance. Our bolts are manufactured with a precision-formed head and rolled threads for enhanced fatigue life.
Applications
Commonly used in offshore oil and gas platforms, chemical processing equipment, desalination plants, and marine environments. Also suitable for power generation and pulp & paper industries.
Customization
We offer tailor-made bolts to meet specific project requirements, including non-standard sizes and special coatings. MOQ is 150KG or based on product type, with various delivery terms.
Case Study
Our duplex bolts have been deployed in offshore and chemical applications for over a decade, providing reliable performance in seawater and acidic environments, significantly reducing maintenance costs.
FAQs
Q: What is the advantage of duplex steel over 316 stainless steel? A: Duplex steel offers higher strength and better resistance to chloride stress corrosion cracking, making it ideal for marine and chemical environments.
Q: Can you supply UNS S32750 (2507) bolts? A: Yes, we have super duplex options available on request.
Q: What size range do you support? A: We cover M2 to M160 diameter, with lengths up to 300mm.
Q: Are these bolts compliant with ASTM standards? A: Yes, we manufacture to ASTM, DIN, ISO, and other international standards.
Q: What surface treatments are available? A: Typically passivation or natural finish, but we can also apply Dacromet or other coatings if required.
Q: What is the delivery time? A: Delivery times vary based on order quantity and specifications; please contact us for accurate lead times.
Q: Can we request third-party inspection? A: Yes, we support SGS or TUV inspections before shipment.
Q: What are the payment terms? A: We accept T/T and other agreed terms.
Inquiry Information
Contact Michael Shen at michaelshen@uhc-group.com.cn or WhatsApp +86 13575349247 for technical support and pricing.
Image Information
Filename: stainless-bolt.png | Alt: duplex steel bolt UNS S32205 with threads
