Standards
Surface Treatments
Certifications
- ISO 9001 - 2015 Certified
- PED 2014/68/EC
- NACE MR0175 / ISO 15156-2
- NORSOK M-650 Qualified
- API 6A Certified
- DFAR
- MERKBLATT AD 2000 W2/W7/W10
Incoloy 925 Forgings (UNS N09925)
Open-die + closed-die forgings ASTM B805 — wellhead bodies, hangers, valves, flanges, custom drawings
Incoloy 925 forgings (UNS N09925) are net-shape or near-net-shape components produced by hot working Incoloy 925 bar / billet on a forging press or hammer to develop a wrought metallurgical structure superior to cast or machined-from-bar alternatives. Forging refines the grain structure, breaks up dendritic segregation from the solidification stage, and aligns grain flow along the principal stress axes, giving 10–30% higher fatigue strength + Charpy toughness than equivalent machined-from-bar parts. The trade-off is tooling cost: closed-die forging requires a custom die set per part geometry (justified for production volumes >50 pieces); open-die forging uses general-purpose tooling but produces near-net rather than net shape (more downstream machining). For sour-service oilfield service, forgings are the standard for wellhead bodies, hangers, valve bodies, flanges and any component where fatigue + toughness combined with sour-service envelope are required. TorqBolt manufactures Incoloy 925 forgings to customer drawing per ASTM B805, with NACE MR0175 sour-service stamping and full EN 10204 3.1/3.2 MTC.
Need Incoloy 925 forgings? Email info@torqbolt.com with drawing / 3D STEP file, quantity, applicable standards (API 6A PSL level, NACE MR0175 stamp, NORSOK MDS A30). WhatsApp +91-22-66157017.
Forging Variants Manufactured
| Variant | Description | Use |
|---|---|---|
| Open-die forging | Hot-worked between flat / V-shaped dies; near-net shape; significant downstream machining | Single piece / low-volume; large simple-shape components (cylinders, blocks, discs) |
| Closed-die forging | Hot-worked in matched-impression die; net or near-net shape; minimal machining | Production runs >50 pieces; complex geometry; consistent dimensional repeatability |
| Ring rolling | Hot-rolled seamless ring on ring-rolling mill | Wellhead spool rings, flange blanks, see rings page |
| Upset forging | Localized cross-section increase by axial upset (header press) | Bolt + stud head formation; flange-on-shaft |
| Hot-extruded forging | Long-form extrusion through die for tubular / sectional shapes | Pipe + tube preform; complex section bar |
Common Forged Component Types
- Wellhead spools + bodies, sour-service production wellheads (drawing-specific to OEM)
- Tubing + casing hangers, hot-forged from billet for wrought structure superior to machined-from-bar
- Valve bodies + bonnets, SSV body forgings
- Flanges, weld-neck, slip-on, blind, lap-joint ASME B16.5
- Tee + elbow + reducer fittings, pipe fittings ASME B16.11
- Pump impellers + casings, sour-service centrifugal-pump components
- Compressor cylinder heads + valve cages, reciprocating sour-gas compressor internals
- Pressure-vessel heads + skirt forgings, ASME Section VIII Div 1/2/3
- Drill-string subs + crossovers, tool joint forgings
Mechanical Properties (Aged)
Tensile 165 ksi min / Yield 110 ksi min / Elongation 18% min / RA 25% min / Hardness 32–35 HRC (NACE cap) / Charpy at -46°C: 40 J min per ASTM B805. Forged-structure properties typically EXCEED these minima by 10–30% due to grain-flow alignment + dendritic refinement. See full mech properties page.
Standards
- ASTM B805, UNS N09925 forgings (primary specification)
- ASTM B564, General requirements for nickel-alloy forgings
- API Specification 6A, Wellhead and Christmas Tree Equipment
- API 17D, Subsea Wellhead and Tree Equipment
- ASME B16.5 / B16.11 / B16.34, Flange + fitting + valve standards
- ASME III Code Case 2727, Nuclear acceptance
- NACE MR0175 / ISO 15156-3 Table A.10, sour service
- NORSOK M-630 MDS A30; EN 10204 3.1 / 3.2
Manufacturing Sequence
- Bar / billet input per ASTM B805 in annealed condition (cut to forging-shot length)
- Pre-heat to forging temperature (1900°F / 1040°C)
- Hot-work on press / hammer (open-die or closed-die per part)
- Trim flash (closed-die only) and cool to room temperature
- Solution anneal + age cycle per heat-treatment specification
- Rough machine to drawing dimension; finish machine after age cycle (avoids dimensional drift from age treatment)
- Final inspection: dimensional CMM, 100% UT (ASTM E2375) + MT (ASTM E709), 100% Rockwell hardness, sample tensile + Charpy
- Marking: heat number + UNS N09925 + ASTM B805 + API 6A PSL + NACE stamp
Frequently Asked Questions
Open-die vs closed-die for my application? <50 pieces or simple geometry → open-die (no die-tooling cost; more machining). >50 pieces with complex geometry → closed-die (die-tooling cost amortized; net or near-net shape minimizes machining). Custom-die setup typically $5,000–25,000 depending on complexity.
Lead time? Open-die: 8–12 weeks. Closed-die with existing die: 10–14 weeks. New closed-die tooling + first article: 16–20 weeks.
Is grain-flow direction important? Yes for fatigue-loaded parts. Specify the principal stress direction at RFQ stage; the die layout aligns grain flow along that direction for maximum fatigue life. Random grain flow (machined-from-bar) gives lower fatigue performance.
Documentation Package & Related Products
EN 10204 3.1 MTC (3.2 with TPI on request); chemistry, tensile, 100% hardness, 100% UT + MT NDE, sample Charpy, heat-treat chart-recorder traces, dimensional CMM report, NACE MR0175 reference, API 6A PSL stamp. Related: bars, rings, wellhead hangers, SSV body forgings, full datasheet.
Request a Quote
Email info@torqbolt.com · Phone +91-22-66157017 · WhatsApp +91-22-66157017. Specify drawing / 3D STEP, forging type, quantity, applicable standards, NDE, MTC level.
References: ASTM B805; ASTM B564; ASTM E2375 / E709 / E18; API Specification 6A; API 17D; ASME B16.5 / B16.11 / B16.34; ASME III Code Case 2727; NACE MR0175 / ISO 15156-3 Table A.10; NORSOK M-630 / M-650; EN 10204. INCOLOY® is a registered trademark of Special Metals Corporation.
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