Materials · Incoloy
Incoloy 925 fasteners
HAGUE FASTENERS makes Incoloy 925 fasteners to order: high strength bolts, studs and machined parts in age-hardened Incoloy 925 (UNS N09925), made to your drawing in Willenhall for sour oil and gas and marine service.
N09925
Listed in NACE MR-01-75
1154 MPa
Typical tensile, solution annealed and aged
32 HRC
Typical hardness, aged
1 to 500
Prototypes to batches of several hundred
About the alloy
High strength for sour service
HAGUE FASTENERS makes Incoloy 925 fasteners in the UK for applications that need high strength and corrosion resistance together. Incoloy 925 resists sulphide stress cracking and stress corrosion cracking in sour, H2S-containing crude oil and natural gas.
It is used for downhole and surface gas well components, including tubulars, valves, hangers, landing nipples, tool joints and packers, and also for fasteners, marine and pump shafting and high strength piping. It is age-hardenable: solution annealing and ageing by our approved partners develop its full strength.
At a glance
- Age-hardenable nickel-iron-chromium alloy
- Resists sulphide stress cracking in sour service
- Listed in NACE MR-01-75
- ASME Code Case 2218, Section VIII Division 1
Composition
Incoloy 925 chemical composition
Percentage by weight. Other elements: Nb 0.50 max.
| Element | Min % | Max % |
|---|---|---|
| Nickel (Ni) | 42.00 | 46.00 |
| Aluminium (Al) | 0.10 | 0.50 |
| Titanium (Ti) | 1.90 | 2.40 |
| Chromium (Cr) | 19.50 | 22.50 |
| Carbon (C) | – | 0.03 |
| Silicon (Si) | – | 0.50 |
| Copper (Cu) | 1.50 | 3.00 |
| Manganese (Mn) | – | 1.00 |
| Iron (Fe) | 22.0 | – |
| Sulphur (S) | – | 0.03 |
| Molybdenum (Mo) | 2.50 | 3.50 |
Properties
Mechanical properties (solution annealed and aged)
Typical values in the solution annealed and aged condition.
| Property | Value |
|---|---|
| Tensile strength | 1154 MPa |
| Yield strength (0.2% offset) | 832 MPa |
| Elongation in 2 in (50 mm) or 4D | 27% |
| Hardness | 32 HRC |
This data is for general information only and may change without notice. HAGUE FASTENERS LIMITED believes it to be accurate but gives no warranty as to its accuracy or completeness and accepts no liability for its use. Actual properties may vary, and nothing here guarantees suitability for a particular use.
Equivalents and applications
Incoloy 925 equivalents and typical uses
Alternative designations
UNS N09925. Designations and specifications include NACE MR-01-75 and ASME Boiler and Pressure Vessel Code Case 2218, Section VIII Division 1.
Typical applications
- Downhole and surface gas well components
- Valves, hangers, landing nipples, tool joints and packers
- Marine and pump shafting
- High strength piping and fasteners
What we make
Fasteners we make in Incoloy 925
Certification and testing
Certified, traceable and tested
Bar comes from approved UK, EU or US mills, with heat numbers carried through to release. Testing is by independent UKAS-accredited laboratories, with EN 10204 3.1 or 3.2 certificates as required. See quality and testing.
- Mill certificates and heat traceability
- PMI and chemical analysis
- Solution annealing and ageing by approved partners, with furnace charts
- Laser-marked heat codes or part numbers
Questions
Frequently asked questions
What is Incoloy 925 used for?
Incoloy 925 is used for high strength parts in sour oil and gas, including downhole tools, valves and Incoloy 925 fasteners, and for marine and pump shafting.
Is Incoloy 925 NACE approved?
Incoloy 925 is listed in NACE MR-01-75. The hardness and condition limits in your specification still apply.
How is Incoloy 925 hardened?
By age hardening. The alloy is solution annealed and then aged to develop its strength.
Can you supply Incoloy 925 with test reports?
Yes. Tensile, hardness and impact tests are carried out by independent UKAS-accredited laboratories and reported with EN 10204 3.1 or 3.2 certificates.
Incoloy 925 enquiry?
Send us your drawing or specification
Tell us the sizes, quantity and documentation you need, and we will reply quickly.