At Ananka Fasteners Pvt Ltd we manufacture and supply premium Alloy 3127 hMo (UNS N08031) fasteners across the complete range of bolts, nuts, studs, screws and washers. 27Cr-31Ni-6.5Mo-N super-austenitic – designed for hot phosphoric and sulphuric acid 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 | Alloy 3127 hMo (UNS N08031) | Material Category | Super-Austenitic Stainless |
| Fastener Bolting Spec | ASTM F468 Gr N08031 | Fastener Nut Spec | ASTM F467 Gr N08031 |
| Raw Material Standard | ASTM B649 (rod and bar) | 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 |
|---|---|---|---|---|
| N08031 | 1.4562 | X1NiCrMoCu32-28-7 | – | – |
| Element | Composition, % |
|---|---|
| Nickel | 30.0–32.0 |
| Chromium | 26.0–28.0 |
| Iron | Balance |
| Molybdenum | 6.0–7.0 |
| Copper | 1.0–1.4 |
| Nitrogen | 0.15–0.25 |
| Carbon, max | 0.015 |
| Manganese, max | 2.0 |
| Condition / Temper | Tensile Strength min, psi (MPa) | Yield Strength min, psi (MPa) | Elongation min, % | Hardness |
|---|---|---|---|---|
| Solution-annealed bar | 94 000 (650) | 40 000 (276) | 40 | – |
The following fastener geometries are stocked or made-to-order in Alloy 3127 hMo:
| 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 Alloy 3127 hMo 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.
Alloy 3127 hMo fasteners manufactured by Ananka are released to ASTM F468 Gr N08031 for bolting products and ASTM F467 Gr N08031 for nuts, with raw material supplied to ASTM B649 (rod and bar). 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 Alloy 3127 hMo (UNS N08031) in Bolts, Nuts, Studs, Screws, Washers – inch and metric.
Alloy 3127 hMo is identified as UNS N08031. The equivalent designations across DIN, EN, British Standard and AFNOR nomenclature are listed in the Equivalent Grades table above.
Bolting products in Alloy 3127 hMo are released to ASTM F468 Gr N08031, and nuts are released to ASTM F467 Gr N08031. Raw material chemistry and mechanicals are governed by ASTM B649 (rod and bar).
Alloy 3127 hMo is a high-nickel alloy known for excellent resistance to high-temperature oxidation and aggressive chemical environments. For severe sour, high-temperature or highly acidic service, the exact operating conditions should be reviewed against the alloy’s certified data rather than general nickel-alloy assumptions.
Yes. For a quotation, provide the required fastener type, nominal size, dimensional standard, quantity and any inspection or certificate requirements.
Need Alloy 3127 hMo 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: Alloy 3127 hMo / UNS N08031, fastener type, nominal size, dimensional standard, quantity, inspection requirements and EN 10204 certificate requirements where applicable.
