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Type 1 Niobium vs. S38815 Stainless Steel

Type 1 niobium belongs to the otherwise unclassified metals classification, while S38815 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 1 niobium and the bottom bar is S38815 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 79
190
Elastic (Young's, Tensile) Modulus, GPa 110
190
Elongation at Break, % 29
34
Poisson's Ratio 0.4
0.29
Shear Modulus, GPa 38
74
Tensile Strength: Ultimate (UTS), MPa 140
610
Tensile Strength: Yield (Proof), MPa 82
290

Thermal Properties

Latent Heat of Fusion, J/g 320
370
Specific Heat Capacity, J/kg-K 270
500
Thermal Expansion, µm/m-K 7.3
15

Otherwise Unclassified Properties

Density, g/cm3 8.6
7.5
Embodied Water, L/kg 160
140

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 35
170
Resilience: Unit (Modulus of Resilience), kJ/m3 32
220
Stiffness to Weight: Axial, points 6.8
14
Stiffness to Weight: Bending, points 18
25
Strength to Weight: Axial, points 4.6
22
Strength to Weight: Bending, points 7.1
21
Thermal Shock Resistance, points 13
15

Alloy Composition

Aluminum (Al), % 0
0 to 0.3
Carbon (C), % 0 to 0.010
0 to 0.030
Chromium (Cr), % 0
13 to 15
Copper (Cu), % 0
0.75 to 1.5
Hafnium (Hf), % 0 to 0.020
0
Hydrogen (H), % 0 to 0.0015
0
Iron (Fe), % 0 to 0.0050
56.1 to 67
Manganese (Mn), % 0
0 to 2.0
Molybdenum (Mo), % 0 to 0.010
0.75 to 1.5
Nickel (Ni), % 0 to 0.0050
13 to 17
Niobium (Nb), % 99.7 to 100
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
5.5 to 6.5
Sulfur (S), % 0
0 to 0.020
Tantalum (Ta), % 0 to 0.1
0
Titanium (Ti), % 0 to 0.020
0
Tungsten (W), % 0 to 0.030
0
Zirconium (Zr), % 0 to 0.020
0