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Type 3 Niobium vs. S44536 Stainless Steel

Type 3 niobium belongs to the otherwise unclassified metals classification, while S44536 stainless steel belongs to the iron alloys. There are 21 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 3 niobium and the bottom bar is S44536 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 110
170
Elastic (Young's, Tensile) Modulus, GPa 100
200
Elongation at Break, % 23
22
Poisson's Ratio 0.4
0.27
Shear Modulus, GPa 38
78
Tensile Strength: Ultimate (UTS), MPa 220
460
Tensile Strength: Yield (Proof), MPa 140
280

Thermal Properties

Latent Heat of Fusion, J/g 310
290
Specific Heat Capacity, J/kg-K 270
480
Thermal Conductivity, W/m-K 42
21
Thermal Expansion, µm/m-K 7.3
11

Otherwise Unclassified Properties

Density, g/cm3 8.6
7.7
Embodied Water, L/kg 160
140

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 44
89
Resilience: Unit (Modulus of Resilience), kJ/m3 93
200
Stiffness to Weight: Axial, points 6.8
14
Stiffness to Weight: Bending, points 18
25
Strength to Weight: Axial, points 7.2
17
Strength to Weight: Bending, points 9.5
17
Thermal Diffusivity, mm2/s 18
5.6
Thermal Shock Resistance, points 21
16

Alloy Composition

Carbon (C), % 0 to 0.010
0 to 0.015
Chromium (Cr), % 0
20 to 23
Hafnium (Hf), % 0 to 0.020
0
Hydrogen (H), % 0 to 0.0015
0
Iron (Fe), % 0 to 0.0050
72.8 to 80
Manganese (Mn), % 0
0 to 1.0
Molybdenum (Mo), % 0 to 0.010
0
Nickel (Ni), % 0 to 0.0050
0 to 0.5
Niobium (Nb), % 98.6 to 99.2
0.050 to 0.8
Nitrogen (N), % 0 to 0.010
0 to 0.015
Oxygen (O), % 0 to 0.015
0
Phosphorus (P), % 0
0 to 0.040
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 to 0.8
Tungsten (W), % 0 to 0.030
0
Zirconium (Zr), % 0.8 to 1.2
0