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Type 4 Niobium vs. N08700 Stainless Steel

Type 4 niobium belongs to the otherwise unclassified metals classification, while N08700 stainless steel belongs to the iron alloys. There are 21 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 4 niobium and the bottom bar is N08700 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 120
170
Elastic (Young's, Tensile) Modulus, GPa 110
200
Elongation at Break, % 23
32
Poisson's Ratio 0.4
0.28
Shear Modulus, GPa 38
79
Tensile Strength: Ultimate (UTS), MPa 220
620
Tensile Strength: Yield (Proof), MPa 140
270

Thermal Properties

Latent Heat of Fusion, J/g 310
300
Specific Heat Capacity, J/kg-K 270
470
Thermal Conductivity, W/m-K 42
13
Thermal Expansion, µm/m-K 7.3
16

Otherwise Unclassified Properties

Density, g/cm3 8.6
8.1
Embodied Water, L/kg 160
200

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 44
160
Resilience: Unit (Modulus of Resilience), kJ/m3 93
180
Stiffness to Weight: Axial, points 6.8
14
Stiffness to Weight: Bending, points 18
24
Strength to Weight: Axial, points 7.2
21
Strength to Weight: Bending, points 9.5
20
Thermal Diffusivity, mm2/s 18
3.5
Thermal Shock Resistance, points 21
14

Alloy Composition

Carbon (C), % 0 to 0.010
0 to 0.040
Chromium (Cr), % 0
19 to 23
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
42 to 52.7
Manganese (Mn), % 0
0 to 2.0
Molybdenum (Mo), % 0 to 0.050
4.3 to 5.0
Nickel (Ni), % 0 to 0.0050
24 to 26
Niobium (Nb), % 98.1 to 99.2
0 to 0.4
Nitrogen (N), % 0 to 0.010
0
Oxygen (O), % 0 to 0.025
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 0.5
0
Titanium (Ti), % 0 to 0.020
0
Tungsten (W), % 0 to 0.050
0
Zirconium (Zr), % 0.8 to 1.2
0