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Type 3 Niobium vs. EN 1.4415 Stainless Steel

Type 3 niobium belongs to the otherwise unclassified metals classification, while EN 1.4415 stainless steel belongs to the iron alloys. There are 20 material properties with values for both materials. Properties with values for just one material (14, in this case) are not shown.

For each property being compared, the top bar is Type 3 niobium and the bottom bar is EN 1.4415 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 100
200
Elongation at Break, % 23
17 to 20
Poisson's Ratio 0.4
0.28
Shear Modulus, GPa 38
77
Tensile Strength: Ultimate (UTS), MPa 220
830 to 930
Tensile Strength: Yield (Proof), MPa 140
730 to 840

Thermal Properties

Latent Heat of Fusion, J/g 310
280
Specific Heat Capacity, J/kg-K 270
470
Thermal Conductivity, W/m-K 42
19
Thermal Expansion, µm/m-K 7.3
9.9

Otherwise Unclassified Properties

Density, g/cm3 8.6
7.9
Embodied Water, L/kg 160
120

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 44
150 to 160
Resilience: Unit (Modulus of Resilience), kJ/m3 93
1350 to 1790
Stiffness to Weight: Axial, points 6.8
14
Stiffness to Weight: Bending, points 18
25
Strength to Weight: Axial, points 7.2
29 to 33
Strength to Weight: Bending, points 9.5
25 to 27
Thermal Diffusivity, mm2/s 18
5.1
Thermal Shock Resistance, points 21
30 to 34

Alloy Composition

Carbon (C), % 0 to 0.010
0 to 0.030
Chromium (Cr), % 0
11.5 to 13.5
Hafnium (Hf), % 0 to 0.020
0
Hydrogen (H), % 0 to 0.0015
0
Iron (Fe), % 0 to 0.0050
75.9 to 82.4
Manganese (Mn), % 0
0 to 0.5
Molybdenum (Mo), % 0 to 0.010
1.5 to 2.5
Nickel (Ni), % 0 to 0.0050
4.5 to 6.5
Niobium (Nb), % 98.6 to 99.2
0
Nitrogen (N), % 0 to 0.010
0
Oxygen (O), % 0 to 0.015
0
Phosphorus (P), % 0
0 to 0.040
Silicon (Si), % 0 to 0.0050
0 to 0.5
Sulfur (S), % 0
0 to 0.015
Tantalum (Ta), % 0 to 0.1
0
Titanium (Ti), % 0 to 0.020
0 to 0.010
Tungsten (W), % 0 to 0.030
0
Vanadium (V), % 0
0.1 to 0.5
Zirconium (Zr), % 0.8 to 1.2
0