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EN 1.4005 Stainless Steel vs. Type 2 Niobium

EN 1.4005 stainless steel belongs to the iron alloys classification, while Type 2 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 1.4005 stainless steel and the bottom bar is Type 2 niobium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
110
Elongation at Break, % 13 to 21
29
Poisson's Ratio 0.28
0.4
Shear Modulus, GPa 76
38
Tensile Strength: Ultimate (UTS), MPa 630 to 750
140
Tensile Strength: Yield (Proof), MPa 370 to 500
82

Thermal Properties

Latent Heat of Fusion, J/g 270
320
Specific Heat Capacity, J/kg-K 480
270
Thermal Conductivity, W/m-K 30
52
Thermal Expansion, µm/m-K 10
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 90 to 110
35
Resilience: Unit (Modulus of Resilience), kJ/m3 350 to 650
32
Stiffness to Weight: Axial, points 14
6.8
Stiffness to Weight: Bending, points 25
18
Strength to Weight: Axial, points 23 to 27
4.6
Strength to Weight: Bending, points 21 to 24
7.1
Thermal Diffusivity, mm2/s 8.1
23
Thermal Shock Resistance, points 23 to 27
13

Alloy Composition

Carbon (C), % 0.060 to 0.15
0 to 0.010
Chromium (Cr), % 12 to 14
0
Hafnium (Hf), % 0
0 to 0.020
Hydrogen (H), % 0
0 to 0.0015
Iron (Fe), % 82.4 to 87.8
0 to 0.010
Manganese (Mn), % 0 to 1.5
0
Molybdenum (Mo), % 0 to 0.6
0 to 0.020
Nickel (Ni), % 0
0 to 0.0050
Niobium (Nb), % 0
99.5 to 100
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), % 0.15 to 0.35
0
Tantalum (Ta), % 0
0 to 0.3
Titanium (Ti), % 0
0 to 0.030
Tungsten (W), % 0
0 to 0.050
Zirconium (Zr), % 0
0 to 0.020