INCOLOY® Alloy 25-6MO
UNS N08926
Description
INCOLOY® alloy 25-6MO belongs to the category of super-austenitic stainless steel alloy. Nickel, chromium and iron are the principal constituents of this alloy. The nickel and chromium content extend the corrosion resistance of the alloy over a wide range of environments like non-oxidizing acids, aqueous, caustic chlorides, halides and pulp-mill bleaches. In addition, the addition of molybdenum and nitrogen gives the alloy with good abilities of resistance to pitting, crevice corrosion and thermal stability.
Chemical Component
| C | Mn | Si | P | S | Ni | Cr | Mo | Cu | N | Fe |
|---|---|---|---|---|---|---|---|---|---|---|
| 0.02% max | 2.0% max | 0.05% max | 0.03% max | 0.01% max | 24.0-26.0% | 19.0-21.0% | 6.0-7.0% | 0.5-1.5% | 0.15-0.25% | Balance min |
Basic Information
| Items | INCOLOY® alloy 25-6MO |
|---|---|
| Catalog | ACMA-Fe-A045 |
| Density | 8.03 g/cm3 |
| Modulus of Elasticity (E) | At 70 °F (20 °C): 27.2 x 103 ksi (188 GPa) |
| Modulus of Rigidity (G) | At 70 °F (20 °C): 10.3 x 103 ksi (71 GPa) |
| Coefficient of Expansion | 9.26 µin/in-°F (70-1100 °F); 16.7 µm/m-°C (25-600 °C) |
| Electrical Resistivity | 31.4 µohm-in, (80.0 µohm-cm) |
| Thermal Conductivity | 79.8 Btu-in/ft2-hr-°F, (11.5 W/m-°C) |
Material Forms
Alfa Chemistry offers INCOLOY® alloy 25-6MO in a variety of forms, including Wire, Bar.
Typical Mechanical Properties
- INCOLOY® alloy 25-6MO wire & bar
| Properties | Annealed | Spring |
|---|---|---|
| Heat Treatment | 1950-2156 °F (1066-11800 °C) | Stress Relieve 800-900 °F (427-482 °C) |
| Tensile Strength | 90-120 ksi (620-827 MPa) | 190 ksi min (1034 MPa) |
| Suggested Operating Conditions | -320 °F to 800 °F (-196 °C to 427 °C) | Up to 800 °F (427 °C) |
Specifications
Wire & Bar: ASTM B649
Applications
- Industries: Chemical processing, oil & gas, nuclear power generation, food processing
- Specifically: Marine/offshore platform equipment, desalination equipment, heat exchangers, pipes, paper processing equipment, caustic chloride systems, springs
* Technical data included herein should be used as a guideline only, and should not be construed as maximum or minimum values for specification or for final design, or for a particular use or application. The data may be revised anytime without notice.
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