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Type 4 Niobium vs. S30452 Stainless Steel

Type 4 niobium belongs to the otherwise unclassified metals classification, while S30452 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 4 niobium and the bottom bar is S30452 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 120
210
Elastic (Young's, Tensile) Modulus, GPa 110
200
Elongation at Break, % 23
34
Poisson's Ratio 0.4
0.28
Shear Modulus, GPa 38
77
Tensile Strength: Ultimate (UTS), MPa 220
660
Tensile Strength: Yield (Proof), MPa 140
310

Thermal Properties

Latent Heat of Fusion, J/g 310
290
Specific Heat Capacity, J/kg-K 270
480
Thermal Conductivity, W/m-K 42
16
Thermal Expansion, µm/m-K 7.3
16

Otherwise Unclassified Properties

Density, g/cm3 8.6
7.8
Embodied Water, L/kg 160
150

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 44
180
Resilience: Unit (Modulus of Resilience), kJ/m3 93
250
Stiffness to Weight: Axial, points 6.8
14
Stiffness to Weight: Bending, points 18
25
Strength to Weight: Axial, points 7.2
23
Strength to Weight: Bending, points 9.5
22
Thermal Diffusivity, mm2/s 18
4.2
Thermal Shock Resistance, points 21
15

Alloy Composition

Carbon (C), % 0 to 0.010
0 to 0.080
Chromium (Cr), % 0
18 to 20
Hafnium (Hf), % 0 to 0.020
0
Hydrogen (H), % 0 to 0.0015
0
Iron (Fe), % 0 to 0.010
66.3 to 73.8
Manganese (Mn), % 0
0 to 2.0
Molybdenum (Mo), % 0 to 0.050
0
Nickel (Ni), % 0 to 0.0050
8.0 to 10.5
Niobium (Nb), % 98.1 to 99.2
0
Nitrogen (N), % 0 to 0.010
0.16 to 0.3
Oxygen (O), % 0 to 0.025
0
Phosphorus (P), % 0
0 to 0.045
Silicon (Si), % 0 to 0.0050
0 to 0.75
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