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Type 4 Niobium vs. S42300 Stainless Steel

Type 4 niobium belongs to the otherwise unclassified metals classification, while S42300 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 S42300 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 120
330
Elastic (Young's, Tensile) Modulus, GPa 110
200
Elongation at Break, % 23
9.1
Poisson's Ratio 0.4
0.28
Shear Modulus, GPa 38
77
Tensile Strength: Ultimate (UTS), MPa 220
1100
Tensile Strength: Yield (Proof), MPa 140
850

Thermal Properties

Latent Heat of Fusion, J/g 310
270
Specific Heat Capacity, J/kg-K 270
470
Thermal Conductivity, W/m-K 42
25
Thermal Expansion, µm/m-K 7.3
10

Otherwise Unclassified Properties

Density, g/cm3 8.6
7.8
Embodied Water, L/kg 160
110

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 44
93
Resilience: Unit (Modulus of Resilience), kJ/m3 93
1840
Stiffness to Weight: Axial, points 6.8
14
Stiffness to Weight: Bending, points 18
25
Strength to Weight: Axial, points 7.2
39
Strength to Weight: Bending, points 9.5
30
Thermal Diffusivity, mm2/s 18
6.8
Thermal Shock Resistance, points 21
40

Alloy Composition

Carbon (C), % 0 to 0.010
0.27 to 0.32
Chromium (Cr), % 0
11 to 12
Hafnium (Hf), % 0 to 0.020
0
Hydrogen (H), % 0 to 0.0015
0
Iron (Fe), % 0 to 0.010
82 to 85.1
Manganese (Mn), % 0
1.0 to 1.4
Molybdenum (Mo), % 0 to 0.050
2.5 to 3.0
Nickel (Ni), % 0 to 0.0050
0 to 0.5
Niobium (Nb), % 98.1 to 99.2
0
Nitrogen (N), % 0 to 0.010
0
Oxygen (O), % 0 to 0.025
0
Phosphorus (P), % 0
0 to 0.025
Silicon (Si), % 0 to 0.0050
0 to 0.5
Sulfur (S), % 0
0 to 0.025
Tantalum (Ta), % 0 to 0.5
0
Titanium (Ti), % 0 to 0.020
0
Tungsten (W), % 0 to 0.050
0
Vanadium (V), % 0
0.2 to 0.3
Zirconium (Zr), % 0.8 to 1.2
0