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EN 1.4006 Stainless Steel vs. Type 4 Niobium

EN 1.4006 stainless steel belongs to the iron alloys classification, while Type 4 niobium belongs to the otherwise unclassified metals. There are 20 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 EN 1.4006 stainless steel and the bottom bar is Type 4 niobium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
110
Elongation at Break, % 16 to 23
23
Poisson's Ratio 0.28
0.4
Shear Modulus, GPa 76
38
Tensile Strength: Ultimate (UTS), MPa 590 to 750
220
Tensile Strength: Yield (Proof), MPa 230 to 510
140

Thermal Properties

Latent Heat of Fusion, J/g 270
310
Specific Heat Capacity, J/kg-K 480
270
Thermal Conductivity, W/m-K 30
42
Thermal Expansion, µm/m-K 11
7.3

Otherwise Unclassified Properties

Density, g/cm3 7.7
8.6
Embodied Water, L/kg 100
160

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 99 to 110
44
Resilience: Unit (Modulus of Resilience), kJ/m3 140 to 660
93
Stiffness to Weight: Axial, points 14
6.8
Stiffness to Weight: Bending, points 25
18
Strength to Weight: Axial, points 21 to 27
7.2
Strength to Weight: Bending, points 20 to 24
9.5
Thermal Diffusivity, mm2/s 8.1
18
Thermal Shock Resistance, points 21 to 26
21

Alloy Composition

Carbon (C), % 0.080 to 0.15
0 to 0.010
Chromium (Cr), % 11.5 to 13.5
0
Hafnium (Hf), % 0
0 to 0.020
Hydrogen (H), % 0
0 to 0.0015
Iron (Fe), % 83.1 to 88.4
0 to 0.010
Manganese (Mn), % 0 to 1.5
0
Molybdenum (Mo), % 0
0 to 0.050
Nickel (Ni), % 0 to 0.75
0 to 0.0050
Niobium (Nb), % 0
98.1 to 99.2
Nitrogen (N), % 0
0 to 0.010
Oxygen (O), % 0
0 to 0.025
Phosphorus (P), % 0 to 0.040
0
Silicon (Si), % 0 to 1.0
0 to 0.0050
Sulfur (S), % 0 to 0.015
0
Tantalum (Ta), % 0
0 to 0.5
Titanium (Ti), % 0
0 to 0.020
Tungsten (W), % 0
0 to 0.050
Zirconium (Zr), % 0
0.8 to 1.2