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EN 1.8868 Steel vs. Type 4 Niobium

EN 1.8868 steel belongs to the iron alloys classification, while Type 4 niobium belongs to the otherwise unclassified metals. There are 21 material properties with values for both materials. Properties with values for just one material (11, in this case) are not shown.

For each property being compared, the top bar is EN 1.8868 steel and the bottom bar is Type 4 niobium.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 160
120
Elastic (Young's, Tensile) Modulus, GPa 190
110
Elongation at Break, % 25
23
Poisson's Ratio 0.29
0.4
Shear Modulus, GPa 73
38
Tensile Strength: Ultimate (UTS), MPa 540
220
Tensile Strength: Yield (Proof), MPa 350
140

Thermal Properties

Latent Heat of Fusion, J/g 250
310
Specific Heat Capacity, J/kg-K 470
270
Thermal Conductivity, W/m-K 48
42
Thermal Expansion, µm/m-K 13
7.3

Otherwise Unclassified Properties

Density, g/cm3 7.9
8.6
Embodied Water, L/kg 48
160

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 120
44
Resilience: Unit (Modulus of Resilience), kJ/m3 330
93
Stiffness to Weight: Axial, points 13
6.8
Stiffness to Weight: Bending, points 24
18
Strength to Weight: Axial, points 19
7.2
Strength to Weight: Bending, points 19
9.5
Thermal Diffusivity, mm2/s 13
18
Thermal Shock Resistance, points 16
21

Alloy Composition

Boron (B), % 0 to 0.0050
0
Carbon (C), % 0 to 0.16
0 to 0.010
Chromium (Cr), % 0 to 0.3
0
Copper (Cu), % 0 to 0.3
0
Hafnium (Hf), % 0
0 to 0.020
Hydrogen (H), % 0
0 to 0.0015
Iron (Fe), % 96.4 to 100
0 to 0.010
Manganese (Mn), % 0 to 1.5
0
Molybdenum (Mo), % 0 to 0.25
0 to 0.050
Nickel (Ni), % 0 to 0.5
0 to 0.0050
Niobium (Nb), % 0 to 0.050
98.1 to 99.2
Nitrogen (N), % 0 to 0.015
0 to 0.010
Oxygen (O), % 0
0 to 0.025
Phosphorus (P), % 0 to 0.020
0
Silicon (Si), % 0 to 0.4
0 to 0.0050
Sulfur (S), % 0 to 0.0080
0
Tantalum (Ta), % 0
0 to 0.5
Titanium (Ti), % 0 to 0.030
0 to 0.020
Tungsten (W), % 0
0 to 0.050
Vanadium (V), % 0 to 0.060
0
Zirconium (Zr), % 0 to 0.050
0.8 to 1.2