Incoloy Alloys
Incoloy 926 (UNS N08926) — Composition, Properties & Supply
Incoloy 926 (UNS N08926, equivalent to 1.4529 / 25-6Mo) is a high-molybdenum nitrogen-bearing superaustenitic alloy with PREN around 43–47. Pitting and crevice resistance approach Inconel 625 at markedly lower cost.
What is the chemical composition of Incoloy 926?
| Element | Symbol | Content (wt%) |
|---|---|---|
| Ni | Ni | 24.0–26.0 |
| Cr | Cr | 19.0–21.0 |
| Mo | Mo | 6.0–7.0 |
| Cu | Cu | 0.50–1.50 |
| N | N | 0.15–0.25 |
| Fe | Fe | Balance |
| Mn | Mn | ≤ 2.00 |
| Si | Si | ≤ 0.50 |
| C | C | ≤ 0.020 |
Values are typical specification limits. Actual heat analysis is reported on the EN 10204 3.1 mill test certificate supplied with each shipment.
What are the mechanical properties of Incoloy 926?
| Property | Value | Note |
|---|---|---|
| Tensile strength | ≥ 650 MPa | Room temperature |
| Yield strength (0.2% offset) | ≥ 295 MPa | Room temperature |
| Elongation | ≥ 35 % | Gauge length 50 mm / 4D |
| Hardness | ≤ 200 HB | Brinell / Rockwell |
What are the physical properties of Incoloy 926?
| Property | Value |
|---|---|
| Density | 8.10 g/cm³ |
| Melting range | 1320–1390 °C |
| Thermal conductivity | 12.0 W/m·K |
| Elastic modulus | 195 GPa |
| Maximum service temperature | 1000 °C |
What are the key characteristics of Incoloy 926?
- PREN around 43–47 — outstanding chloride pitting resistance
- High molybdenum plus nitrogen raises strength and corrosion resistance
- Resists seawater, brine and acidic chloride media
- Far cheaper than nickel alloys of comparable corrosion resistance
Where is Incoloy 926 used?
- Desalination and seawater cooling systems
- FGD absorbers and ducting
- Pulp bleaching and chlor-alkali industry
- Chloride-bearing chemical heat exchangers
- Offshore firewater and ballast systems
Which standards and specifications cover Incoloy 926?
What product forms are available?
Frequently asked questions
How does Incoloy 926 relate to 254SMO?
They are very close in chemistry and performance — 926 (N08926) and 254SMO (S31254) are both 6% Mo superaustenitic grades with PREN in the 43–47 range and are often interchangeable. Final selection should follow the applicable standard, the product form required and design allowable stresses; Hangbo supplies both.
Need Incoloy 926 bar, tube, plate or forgings?
Send the grade, dimensions, standard and quantity. We answer within 10 minutes on working days and quote within 24 hours, with EN 10204 3.1 certification.
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