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EN 1.7709 Steel vs. Type 1 Niobium

EN 1.7709 steel belongs to the iron alloys classification, while Type 1 niobium belongs to the otherwise unclassified metals. There are 17 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 1.7709 steel and the bottom bar is Type 1 niobium.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 200 to 230
79
Elastic (Young's, Tensile) Modulus, GPa 190
110
Poisson's Ratio 0.29
0.4
Shear Modulus, GPa 73
38
Tensile Strength: Ultimate (UTS), MPa 650 to 780
140

Thermal Properties

Latent Heat of Fusion, J/g 250
320
Specific Heat Capacity, J/kg-K 470
270
Thermal Conductivity, W/m-K 33
52
Thermal Expansion, µm/m-K 11
7.3

Otherwise Unclassified Properties

Density, g/cm3 7.8
8.6
Embodied Water, L/kg 56
160

Common Calculations

Stiffness to Weight: Axial, points 13
6.8
Stiffness to Weight: Bending, points 24
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 8.9
23
Thermal Shock Resistance, points 22 to 26
13

Alloy Composition

Aluminum (Al), % 0 to 0.030
0
Carbon (C), % 0.17 to 0.25
0 to 0.010
Chromium (Cr), % 1.2 to 1.5
0
Hafnium (Hf), % 0
0 to 0.020
Hydrogen (H), % 0
0 to 0.0015
Iron (Fe), % 95.2 to 97.5
0 to 0.0050
Manganese (Mn), % 0.4 to 0.8
0
Molybdenum (Mo), % 0.55 to 0.8
0 to 0.010
Nickel (Ni), % 0 to 0.6
0 to 0.0050
Niobium (Nb), % 0
99.7 to 100
Nitrogen (N), % 0
0 to 0.010
Oxygen (O), % 0
0 to 0.015
Phosphorus (P), % 0 to 0.025
0
Silicon (Si), % 0 to 0.4
0 to 0.0050
Sulfur (S), % 0 to 0.030
0
Tantalum (Ta), % 0
0 to 0.1
Titanium (Ti), % 0
0 to 0.020
Tungsten (W), % 0
0 to 0.030
Vanadium (V), % 0.2 to 0.35
0
Zirconium (Zr), % 0
0 to 0.020