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Type 2 Niobium vs. N08801 Stainless Steel

Type 2 niobium belongs to the otherwise unclassified metals classification, while N08801 stainless steel belongs to the iron alloys. There are 20 material properties with values for both materials. Properties with values for just one material (13, in this case) are not shown.

For each property being compared, the top bar is Type 2 niobium and the bottom bar is N08801 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 110
200
Elongation at Break, % 29
34
Poisson's Ratio 0.4
0.28
Shear Modulus, GPa 38
77
Tensile Strength: Ultimate (UTS), MPa 140
860
Tensile Strength: Yield (Proof), MPa 82
190

Thermal Properties

Latent Heat of Fusion, J/g 320
300
Specific Heat Capacity, J/kg-K 270
480
Thermal Conductivity, W/m-K 52
12
Thermal Expansion, µm/m-K 7.3
16

Otherwise Unclassified Properties

Density, g/cm3 8.6
8.0
Embodied Water, L/kg 160
200

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 35
220
Resilience: Unit (Modulus of Resilience), kJ/m3 32
92
Stiffness to Weight: Axial, points 6.8
14
Stiffness to Weight: Bending, points 18
24
Strength to Weight: Axial, points 4.6
30
Strength to Weight: Bending, points 7.1
25
Thermal Diffusivity, mm2/s 23
3.3
Thermal Shock Resistance, points 13
20

Alloy Composition

Carbon (C), % 0 to 0.010
0 to 0.1
Chromium (Cr), % 0
19 to 22
Copper (Cu), % 0
0 to 0.5
Hafnium (Hf), % 0 to 0.020
0
Hydrogen (H), % 0 to 0.0015
0
Iron (Fe), % 0 to 0.010
39.5 to 50.3
Manganese (Mn), % 0
0 to 1.5
Molybdenum (Mo), % 0 to 0.020
0
Nickel (Ni), % 0 to 0.0050
30 to 34
Niobium (Nb), % 99.5 to 100
0
Nitrogen (N), % 0 to 0.010
0
Oxygen (O), % 0 to 0.025
0
Silicon (Si), % 0 to 0.0050
0 to 1.0
Sulfur (S), % 0
0 to 0.015
Tantalum (Ta), % 0 to 0.3
0
Titanium (Ti), % 0 to 0.030
0.75 to 1.5
Tungsten (W), % 0 to 0.050
0
Zirconium (Zr), % 0 to 0.020
0