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Type 2 Niobium vs. R04295 Alloy

Both Type 2 niobium and R04295 alloy are otherwise unclassified metals. Both are furnished in the annealed condition. They have 88% of their average alloy composition in common. There are 18 material properties with values for both materials. Properties with values for just one material (3, in this case) are not shown.

For each property being compared, the top bar is Type 2 niobium and the bottom bar is R04295 alloy.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 110
100
Elongation at Break, % 29
22
Poisson's Ratio 0.4
0.38
Shear Modulus, GPa 38
37
Tensile Strength: Ultimate (UTS), MPa 140
410
Tensile Strength: Yield (Proof), MPa 82
300

Thermal Properties

Latent Heat of Fusion, J/g 320
300
Specific Heat Capacity, J/kg-K 270
260
Thermal Expansion, µm/m-K 7.3
7.2

Otherwise Unclassified Properties

Density, g/cm3 8.6
9.0
Embodied Water, L/kg 160
950

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 35
84
Resilience: Unit (Modulus of Resilience), kJ/m3 32
430
Stiffness to Weight: Axial, points 6.8
6.3
Stiffness to Weight: Bending, points 18
17
Strength to Weight: Axial, points 4.6
13
Strength to Weight: Bending, points 7.1
14
Thermal Shock Resistance, points 13
40

Alloy Composition

Carbon (C), % 0 to 0.010
0 to 0.015
Hafnium (Hf), % 0 to 0.020
9.0 to 11
Hydrogen (H), % 0 to 0.0015
0 to 0.0015
Iron (Fe), % 0 to 0.010
0
Molybdenum (Mo), % 0 to 0.020
0
Nickel (Ni), % 0 to 0.0050
0
Niobium (Nb), % 99.5 to 100
85.9 to 90.3
Nitrogen (N), % 0 to 0.010
0 to 0.010
Oxygen (O), % 0 to 0.025
0 to 0.025
Silicon (Si), % 0 to 0.0050
0
Tantalum (Ta), % 0 to 0.3
0 to 0.5
Titanium (Ti), % 0 to 0.030
0.7 to 1.3
Tungsten (W), % 0 to 0.050
0 to 0.5
Zirconium (Zr), % 0 to 0.020
0 to 0.7