A solid solution strengthening grade, Alloy X has good strength and corrosion resistance in reducing carburising atmospheres.
| % | Cr | Mo | Co | W | Al | Ti | B | C | Fe | Mn | Si | P | S | Cu | Ni |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Min | 20.5 | 8 | 0.5 | 0.2 | - | - | - | 0.05 | 17 | - | - | - | - | - | - |
| Max | 23 | 10 | 2.5 | 1 | 0.5 | 0.15 | 0.01 | 0.15 | 20 | 1 | 1 | 0.04 | 0.03 | 0.5 | Balance |
Alloy X has excellent resistance to reducing and carburizing atmospheres, making it suitable for furnace components. Due to its high molybdenum content, Alloy X may be subject to catastrophic oxidation at 1204°C.
The alloy has good high temperature strength coupled with oxidation resistance up to 1093°C.
This Alloy is readily weldable using matching filler wires. After severe forming, fabrications may be annealed at 1177°C, 15 minutes per 1/8″ of thickness, rapid air cool.
To learn more about Alloy X get in touch using our contact form, or fill in our online quote form and we’ll get back to you!
| Mechanical &Physical Properties | 21C° | 538°C | 649°C | 760°C | 871°C | 982°C |
|---|---|---|---|---|---|---|
| Ultimate Tensile Strength /MPa | 765.3 | 613.6 | 572.2 | 462 | 310.3 | - |
| 0.2% Yield Strength /MPa | 379.2 | 248.2 | 241.3 | 234.4 | 193 | - |
| Elongation % | 44 | 49 | 54 | 53 | 58 | - |
| Coefficient of Thermal Expansion /mm/m°C x 10-6 | - | 15.1 | 15.5 | 15.8 | 16.2 | 16.6 |
| Thermal Conductivity /kcal/(hr.m.°C) | - | 16.8 | 19 | 20.7 | 22.6 | 24.4 |
| Modulus of Elasticity/ x105 MPa | 2.07 | 1.79 | 1.72 | 1.59 | 1.52 | 1.38 |
| Temperature °C | 649°C | 816°C | 982°C |
|---|---|---|---|
| 100 Hours, ksi | 48 | 14 | 4 |
| 10,000 Hours, ksi | 34 | 10 | 2 |
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