Duplex 2205 Stud Bolts
| Standard | DIN 976-1 (full thread) / 939 (double-end) · Customer Drawing |
|---|---|
| Material | Duplex 2205 |
| Strength Grade | UNS S32205 / S31803 |
| Size Range | Metric / inch sizes to drawing |
| Surface Treatment | Pickled / Passivated as specified |
01
Product Description
Product Description & Key Specifications
Duplex 2205 stud bolts are available as fully threaded or double-end studs for process piping, marine equipment and offshore assemblies. The material designation, thread form and overall length are specified for each order.
2205 is a duplex stainless steel with ferritic and austenitic phases. UNS S32205 and UNS S31803 are commonly associated with 2205; the exact chemical and mechanical requirements must follow the selected material specification and certificate.
Full-thread geometry may reference DIN 976-1 and double-end geometry DIN 939, or the customer drawing. These dimensional references do not establish a pressure-service bolting material grade. Material condition, service temperature, compatible nuts and lubrication should be confirmed for the application.
| Product type | Fully threaded / double-end stud bolts |
|---|---|
| Material | Duplex 2205 stainless steel |
| Material designation | UNS S32205 / UNS S31803; EN 1.4462 reference |
| Dimensional reference | DIN 976-1 for full thread / DIN 939 for double-end studs / customer drawing |
| Thread and size | Metric or UNC / UNF thread; diameter, pitch and length to drawing |
| Surface condition | Pickled / passivated as specified |
| Documentation | Material certificate, heat traceability and inspection reports as agreed |
Dimensions and Drawing
02
Manufacturing
Manufacturing & Quality Control
Manufacturing CapabilityQuality Control
Full-thread or double-end geometry to drawingThread gauge, diameter and overall length inspection
Specified surface treatment and markingMaterial identity and heat traceability as agreed
Project packing and identificationMaterial certificate, PMI or other testing when specified in the order
03
Selection
Selection Advantages by Application
Process Piping and Equipment
Duplex studs for project-specified piping, valves and equipment joints exposed to chloride-bearing media. Confirm the governing bolting specification, service temperature and nut selection.
Oil and gas fastenersMarine and Offshore Assemblies
Studs for marine equipment and offshore renewable assemblies where the project specifies duplex 2205. Exposure, crevices, loading and maintenance conditions determine suitability.
Marine fasteners04
Assembly
Recommended Matching Products
05
FAQ
Common Questions Before RFQ
What is the material grade of 2205 studs?
2205 is a duplex stainless steel commonly specified as UNS S32205 or UNS S31803. Confirm the exact designation, product specification and required mechanical properties on the order.
Can 2205 studs replace ASTM A193 B8M studs?
A material change requires review of the applicable bolting specification, mechanical properties, service temperature and corrosion conditions. Duplex 2205 is not an ASTM A193 B8M designation.
Which nuts should be used with duplex 2205 studs?
Specify a compatible nut material and strength for the joint, along with thread fit and lubrication. Standard 304 or 316 nuts should not be assumed to meet the assembly requirements.
Need Duplex 2205 Stud Bolts?
Send the material designation, diameter, thread pitch, length, drawing, quantity, matching nut requirements and required documents for a quotation.
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