At Ananka Fasteners Pvt Ltd, we engineer, manufacture, and supply premium Duplex 2205 (S31803) (UNS S31803) Threaded Rod / Stud built for demanding service. Original 2205 chemistry (A182 F51 equivalent) with the balanced ferrite-austenite structure of standard duplex. This technical datasheet covers the precise dimensional tolerances per DIN 976 and the material requirements dictated by ASTM A1082 UNS S31803 and ASTM A276 / A479.
A Duplex 2205 (old) Threaded Rod is continuously threaded along its length and is used where cut-to-length studs, anchor rods or all-thread hanger rods are required. The tables below provide the principal dimensions, equivalent material grades, chemical composition and mechanical properties covered by the technical data for this product.
Our threaded rods / studs are manufactured in standard and custom configurations, ensuring a precise fit for demanding structural, piping, and chemical-process applications.
| Product Name | Duplex 2205 (S31803) Threaded Rod / Stud | Material Category | Duplex Stainless Steel |
| Material Grade | Duplex 2205 (S31803) (UNS S31803) | Fastener Spec | ASTM A1082 UNS S31803 |
| Dimension Spec | DIN 976 | Material Spec | ASTM A276 / A479 |
| Thread Standard | ISO 261 / ISO 965 (Metric Coarse) | Thread Tolerance | 6g / 4g6g |
The DIN 976 specification governs the physical geometry of this product. The tolerances below ensure a secure, reliable mate under service loads. DIN 976 covers fully threaded metric rod / studs, supplied in 1 metre lengths and cut to size.
| Nominal Thread (d) | Pitch (mm) | Pitch Diameter (mm) | Tensile Stress Area (mm2) | Standard Length (mm) |
|---|---|---|---|---|
| M6 | 1.0 | 5.350 | 20.1 | 1000 |
| M8 | 1.25 | 7.188 | 36.6 | 1000 |
| M10 | 1.5 | 9.026 | 58.0 | 1000 |
| M12 | 1.75 | 10.863 | 84.3 | 1000 |
| M16 | 2.0 | 14.701 | 157.0 | 1000 |
| M20 | 2.5 | 18.376 | 245.0 | 1000 |
| M24 | 3.0 | 22.051 | 353.0 | 1000 |
Continuous threading allows the rod to be cut to length on site or supplied pre-cut to a specified length. Buyers should confirm the required nominal diameter, thread series and length against the purchase drawing or applicable standard before ordering.
The UNS S31803 Threaded Rod / Stud is manufactured from Duplex 2205 (old), a duplex stainless steel. The equivalent designations below assist with cross-referencing this material against European, British and other national standards.
| US / UNS | Werkstoff Nr. (DIN) | European (EN) | British Standard (BS) | Other / AFNOR |
|---|---|---|---|---|
| S31803 | 1.4462 | X2CrNiMoN22-5-3 | 318 S13 | Z3 CND 22-05 Az (AFNOR) |
This section details the chemical composition limits and minimum mechanical properties governing Duplex 2205 (S31803) (UNS S31803) fasteners, as dictated by ASTM A1082 UNS S31803 (chemistry & mechanicals) and the raw bar/rod standard ASTM A276 / A479.
| Element | Composition, % |
|---|---|
| Chromium | 21.0–23.0 |
| Nickel | 4.5–6.5 |
| Molybdenum | 2.5–3.5 |
| Nitrogen | 0.08–0.20 |
| Manganese, max | 2.0 |
| Carbon, max | 0.030 |
| Silicon, max | 1.0 |
| Iron | Balance |
| Condition / Temper | Tensile Strength min, psi (MPa) | Yield Strength min, psi (MPa) | Elongation min, % | Hardness |
|---|---|---|---|---|
| Solution-annealed bar (A1082) | 90 000 (620) | 65 000 (450) | 25 | ≤31 HRC |
Our Duplex 2205 (S31803) threaded rods / studs are specified across the following industries and service conditions, drawing on the material’s core strengths:
Service above the recommended sensitisation temperature range, or in sour/high-chloride conditions, should be reviewed with the project engineer before final material selection.
Every batch of Threaded Rods / Studs produced undergoes rigorous internal and third-party testing to ensure zero-defect delivery. We supply complete traceability with our global shipments.
For technical documentation and quotations, buyers can also review the Ananka Fasteners manufacturing and supply range or contact the team through the fastener enquiry and technical support page.
This datasheet references DIN 976 for dimensional requirements and ASTM A1082 UNS S31803 for material and fastener requirements. The applicable standard edition and purchase requirements should be confirmed for every project.
For DIN standards information, see the DIN standards catalogue. For ASTM International material and fastener specifications, see the ASTM International standards catalogue. These external references are provided for standards identification; the purchaser should verify the current edition applicable to the order.
A Duplex 2205 (old) Threaded Rod / Stud is a continuously threaded rod manufactured from Duplex 2205 (old) (UNS S31803). The product combines the DIN 976 dimensional geometry with the ASTM A1082 UNS S31803 material and fastener requirements.
The dimensional information in this datasheet is based on DIN 976, which governs the physical geometry of this product. The table above provides the principal dimensions listed for the Duplex 2205 (old) product range.
Duplex 2205 (old) is identified as UNS S31803. The equivalent designations listed in this datasheet include Werkstoff Nr. 1.4462, EN X2CrNiMoN22-5-3, British Standard 318 S13, Z3 CND 22-05 Az (AFNOR).
Duplex 2205 (old) is a duplex stainless steel known for high strength combined with strong resistance to chloride stress-corrosion cracking. Service above the recommended sensitisation temperature range, or in sour/high-chloride conditions, should be reviewed with the project engineer before final material selection.
The product information supports standard and custom configurations. For a quotation, provide the required material grade, nominal size, dimensional requirement, quantity, standard and any inspection or certificate requirements.
Need a Duplex 2205 (old) Threaded Rod / Stud for an industrial project? Send the required size, quantity, standard and certification requirements to Ananka Fasteners. Our team can review the requirement and provide technical and commercial information for standard or custom configurations.
Recommended RFQ details: Duplex 2205 (old) / UNS S31803, nominal size, DIN 976 requirement, quantity, inspection requirements and EN 10204 certificate requirements where applicable.
