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Type 3 Niobium vs. S21460 Stainless Steel

Type 3 niobium belongs to the otherwise unclassified metals classification, while S21460 stainless steel belongs to the iron alloys. There are 19 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 Type 3 niobium and the bottom bar is S21460 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 110
250
Elastic (Young's, Tensile) Modulus, GPa 100
200
Elongation at Break, % 23
46
Poisson's Ratio 0.4
0.28
Shear Modulus, GPa 38
77
Tensile Strength: Ultimate (UTS), MPa 220
830
Tensile Strength: Yield (Proof), MPa 140
430

Thermal Properties

Latent Heat of Fusion, J/g 310
290
Specific Heat Capacity, J/kg-K 270
480
Thermal Expansion, µm/m-K 7.3
18

Otherwise Unclassified Properties

Density, g/cm3 8.6
7.6
Embodied Water, L/kg 160
160

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 44
320
Resilience: Unit (Modulus of Resilience), kJ/m3 93
460
Stiffness to Weight: Axial, points 6.8
14
Stiffness to Weight: Bending, points 18
25
Strength to Weight: Axial, points 7.2
30
Strength to Weight: Bending, points 9.5
26
Thermal Shock Resistance, points 21
17

Alloy Composition

Carbon (C), % 0 to 0.010
0 to 0.12
Chromium (Cr), % 0
17 to 19
Hafnium (Hf), % 0 to 0.020
0
Hydrogen (H), % 0 to 0.0015
0
Iron (Fe), % 0 to 0.0050
57.3 to 63.7
Manganese (Mn), % 0
14 to 16
Molybdenum (Mo), % 0 to 0.010
0
Nickel (Ni), % 0 to 0.0050
5.0 to 6.0
Niobium (Nb), % 98.6 to 99.2
0
Nitrogen (N), % 0 to 0.010
0.35 to 0.5
Oxygen (O), % 0 to 0.015
0
Phosphorus (P), % 0
0 to 0.060
Silicon (Si), % 0 to 0.0050
0 to 1.0
Sulfur (S), % 0
0 to 0.030
Tantalum (Ta), % 0 to 0.1
0
Titanium (Ti), % 0 to 0.020
0
Tungsten (W), % 0 to 0.030
0
Zirconium (Zr), % 0.8 to 1.2
0