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Nickel 625 vs. Type 4 Niobium

Nickel 625 belongs to the nickel alloys classification, while Type 4 niobium belongs to the otherwise unclassified metals. There are 20 material properties with values for both materials. Properties with values for just one material (12, in this case) are not shown.

For each property being compared, the top bar is nickel 625 and the bottom bar is Type 4 niobium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
110
Elongation at Break, % 33 to 34
23
Poisson's Ratio 0.29
0.4
Shear Modulus, GPa 79
38
Tensile Strength: Ultimate (UTS), MPa 790 to 910
220
Tensile Strength: Yield (Proof), MPa 320 to 450
140

Thermal Properties

Latent Heat of Fusion, J/g 330
310
Specific Heat Capacity, J/kg-K 440
270
Thermal Conductivity, W/m-K 11
42
Thermal Expansion, µm/m-K 13
7.3

Otherwise Unclassified Properties

Density, g/cm3 8.6
8.6
Embodied Water, L/kg 290
160

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 220 to 250
44
Resilience: Unit (Modulus of Resilience), kJ/m3 260 to 490
93
Stiffness to Weight: Axial, points 13
6.8
Stiffness to Weight: Bending, points 23
18
Strength to Weight: Axial, points 26 to 29
7.2
Strength to Weight: Bending, points 22 to 24
9.5
Thermal Diffusivity, mm2/s 2.9
18
Thermal Shock Resistance, points 22 to 25
21

Alloy Composition

Aluminum (Al), % 0 to 0.4
0
Carbon (C), % 0 to 0.1
0 to 0.010
Chromium (Cr), % 20 to 23
0
Cobalt (Co), % 0 to 1.0
0
Hafnium (Hf), % 0
0 to 0.020
Hydrogen (H), % 0
0 to 0.0015
Iron (Fe), % 0 to 5.0
0 to 0.010
Manganese (Mn), % 0 to 0.5
0
Molybdenum (Mo), % 8.0 to 10
0 to 0.050
Nickel (Ni), % 58 to 68.9
0 to 0.0050
Niobium (Nb), % 3.2 to 4.2
98.1 to 99.2
Nitrogen (N), % 0
0 to 0.010
Oxygen (O), % 0
0 to 0.025
Phosphorus (P), % 0 to 0.015
0
Silicon (Si), % 0 to 0.5
0 to 0.0050
Sulfur (S), % 0 to 0.015
0
Tantalum (Ta), % 0
0 to 0.5
Titanium (Ti), % 0 to 0.4
0 to 0.020
Tungsten (W), % 0
0 to 0.050
Zirconium (Zr), % 0
0.8 to 1.2