Cb-752 Nb10W2.5Zr Niobium-Tungsten Alloy Bar, Wire and Plate
- Type: Bar, Wire, and Plate
- Niobium-Tungsten Alloy
- Grade: Cb-752, Nb10W2.5Zr
Features
Cb-752 Nb10W2.5Zr Niobium-Tungsten Alloy Bar, Wire, and Plate
Cb-752 Alloy Chemical Composition (wt.%)
| Elements | Value |
| Carbon, C | 0.015% max. |
| Hydrogen, H | 0.0010% max. |
| Niobium, Nb (Columbium, Cb) | 87.50% |
| Nitrogen, N | 0.010% max. |
| Oxygen, O | 0.020% max. |
| Tungsten, W | 9.0 – 11.0% |
| Zirconium, Zr | 2.0 – 3.0 % |
Cb-752 Alloy Mechanical Properties
|
Alloy Grade |
Test Temperature (℃) |
Tensile Strength (MPa) |
Yield Strength (MPa) |
Elongation (%) |
|
Nb-10W-2.5Zr (Cb-752) |
Room Temperature |
514.5 |
411.6 |
31 |
|
1093 |
271.5 |
221.4 |
45.7 |
|
|
1371 |
121.5 |
113.7 |
>70 |
|
|
1645 |
53.8 |
53.8 |
>45 |
| Properties | Value |
| Melting Point | 2425℃ |
| Density | 9.03 g/cm3 |
Technical Specifications
| Specification | Value |
| Standard | Niobium-Tungsten Alloy Cb-752/Nb10W2.5Zr Bar Wire Plate |
| Grade | Cb-752, Nb10W2.5Zr |
| Type | Bar, Wire, Foil, Plate, Sheet, Strip |
| Dimension | Round Bar & Wire Diameter: 1 – 200mm Foil Width:≤150mm x Thickness:≤0.13mm Plate Width:≥150mm x Thickness:≥4.8mm Sheet Width:≥150mm x Thickness: 0.13-4.8mm Strip Width:≤150mm x Thickness:0.13-4.8mm |
| Inspection Certificate | EN 10204 Type 3.1 (Mill Test Certificate), EN 10204 Type 3.2 (Witness Testing or 3rd Party Inspection) |
| Tests | Chemical analysis, Tensile test, Intergranular corrosion test, Flatness %=(H/L) x 100, Metallographic examination |
Key Properties
High Melting Point: Similar to C-103, Nb-10W-2.5Zr boasts a very high melting point, exceeding 2400°C (4350°F), allowing it to withstand extreme temperatures.
Strength and Creep Resistance: Exhibits excellent strength and creep resistance at high temperatures, making it suitable for structural components in demanding environments.
Good Ductility: While maintaining high strength, it retains good ductility, allowing for easier fabrication and forming compared to some other refractory alloys.
Oxidation Resistance: Possesses decent oxidation resistance, though additional coatings may be required for optimal performance in highly oxidizing environments.
Packing
Packed in plywood boxes.
Application
Aerospace: Utilized in rocket engine components, such as nozzles and combustion chambers, due to its high-temperature strength and creep resistance.
Gas Turbines: Finds application in high-performance gas turbine engines for components like blades and vanes that experience extreme temperatures and stresses.
Nuclear Industry: Used in specific nuclear reactor applications where high-temperature strength and corrosion resistance are crucial.
Chemical Processing: Employed in some high-temperature chemical processing equipment due to its strength and corrosion resistance.
