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.

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