At Ananka Fasteners Pvt Ltd we manufacture and supply premium Super Duplex S32906 (UNS S32906) fasteners across the complete range of bolts, nuts, studs, screws and washers. 27Cr-7Ni-4Mo-N super duplex developed for downhole and topside oil-and-gas service. This page consolidates the chemistry, mechanical properties, equivalent grades and product forms available in this alloy, together with the ASTM specifications that govern each product form.
Ananka supplies the complete family of standard-fastener geometries in this grade. Each product form is manufactured to its own dedicated dimensional standard and material specification, listed below.
| Material Grade | Super Duplex S32906 (UNS S32906) | Material Category | Super Duplex Stainless |
| Fastener Bolting Spec | ASTM A1082 UNS S32906 | Fastener Nut Spec | ASTM A194 Gr 8 (mod.) |
| Raw Material Standard | ASTM A276 / A479; ASTM A1082 UNS S32906 | Thread Standard | ASME B1.1 (UNC/UNF), ISO 261 (Metric) |
| Product Forms Available | Bolts, Nuts, Studs, Screws, Washers – inch and metric | Standard Certifications | EN 10204 3.1 / 3.2, PMI, MTC |
| US / UNS | Werkstoff Nr. (DIN) | European (EN) | British Standard (BS) | Other / AFNOR |
|---|---|---|---|---|
| S32906 | 1.4477 | X2CrNiMoN29-7-2 | – | – |
| Element | Composition, % |
|---|---|
| Chromium | 28.0–30.0 |
| Nickel | 5.8–7.5 |
| Molybdenum | 1.5–2.6 |
| Nitrogen | 0.30–0.40 |
| Manganese | 0.80–1.50 |
| Carbon, max | 0.030 |
| Silicon, max | 0.50 |
| Iron | Balance |
| Condition / Temper | Tensile Strength min, psi (MPa) | Yield Strength min, psi (MPa) | Elongation min, % | Hardness |
|---|---|---|---|---|
| Solution-annealed bar (A1082) | 116 000 (800) | 80 000 (550) | 25 | ≤32 HRC |
The following fastener geometries are stocked or made-to-order in Super Duplex S32906:
| Hex Bolt | Available | Heavy Hex Bolt | Available |
| Hex Bolt (Partial Thread) DIN 931 | Available | Hex Bolt (Full Thread) DIN 933 | Available |
| Hex Bolt ISO 4014 | Available | Hex Bolt (Precision) BS 3692 | Available |
| Stud Bolt (Threaded Both Ends) ASME B16.5 | Available | Threaded Rod / Stud DIN 976 | Available |
| Socket Head Cap Screw ASME B18.3 | Available | Socket Head Cap Screw DIN 912 | Available |
| Hex Nut ASME B18.2.2 | Available | Heavy Hex Nut ASME B18.2.2 | Available |
| Hex Nut DIN 934 | Available | Hex Nut ISO 4032 | Available |
| Flat Washer ASME B18.22.1 | Available | Flat Washer DIN 125 | Available |
Selected uses of Super Duplex S32906 fasteners drawn from the alloy’s core strengths:
Every batch produced in this grade undergoes internal and third-party testing to ensure zero-defect delivery, with complete traceability shipped worldwide.
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.
Super Duplex S32906 fasteners manufactured by Ananka are released to ASTM A1082 UNS S32906 for bolting products and ASTM A194 Gr 8 (mod.) for nuts, with raw material supplied to ASTM A276 / A479; ASTM A1082 UNS S32906. The applicable standard edition and purchase requirements should be confirmed for every project.
For ASTM International material and fastener specifications, see the ASTM International standards catalogue. This external reference is provided for standards identification; the purchaser should verify the current edition applicable to the order.
Ananka Fasteners supplies Super Duplex S32906 (UNS S32906) in Bolts, Nuts, Studs, Screws, Washers – inch and metric.
Super Duplex S32906 is identified as UNS S32906. The equivalent designations across DIN, EN, British Standard and AFNOR nomenclature are listed in the Equivalent Grades table above.
Bolting products in Super Duplex S32906 are released to ASTM A1082 UNS S32906, and nuts are released to ASTM A194 Gr 8 (mod.). Raw material chemistry and mechanicals are governed by ASTM A276 / A479; ASTM A1082 UNS S32906.
Super Duplex S32906 is a super duplex stainless steel known for very high pitting and crevice-corrosion resistance in aggressive chloride environments. Welding and heat-treatment procedures should be fully qualified, and service conditions reviewed against the certified pitting-resistance data, before use in critical applications.
Yes. For a quotation, provide the required fastener type, nominal size, dimensional standard, quantity and any inspection or certificate requirements.
Need Super Duplex S32906 bolts, nuts, studs, screws or washers for an industrial project? Send the required fastener type, 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: Super Duplex S32906 / UNS S32906, fastener type, nominal size, dimensional standard, quantity, inspection requirements and EN 10204 certificate requirements where applicable.
