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ACI-ASTM CE30 Steel vs. Type 2 Niobium

ACI-ASTM CE30 steel belongs to the iron alloys classification, while Type 2 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 ACI-ASTM CE30 steel and the bottom bar is Type 2 niobium.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 180
110
Elastic (Young's, Tensile) Modulus, GPa 200
110
Elongation at Break, % 11
29
Poisson's Ratio 0.27
0.4
Shear Modulus, GPa 79
38
Tensile Strength: Ultimate (UTS), MPa 630
140
Tensile Strength: Yield (Proof), MPa 310
82

Thermal Properties

Latent Heat of Fusion, J/g 310
320
Specific Heat Capacity, J/kg-K 490
270
Thermal Conductivity, W/m-K 14
52
Thermal Expansion, µm/m-K 17
7.3

Otherwise Unclassified Properties

Density, g/cm3 7.7
8.6
Embodied Water, L/kg 180
160

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 59
35
Resilience: Unit (Modulus of Resilience), kJ/m3 240
32
Stiffness to Weight: Axial, points 15
6.8
Stiffness to Weight: Bending, points 25
18
Strength to Weight: Axial, points 23
4.6
Strength to Weight: Bending, points 21
7.1
Thermal Diffusivity, mm2/s 3.6
23
Thermal Shock Resistance, points 13
13

Alloy Composition

Carbon (C), % 0 to 0.3
0 to 0.010
Chromium (Cr), % 26 to 30
0
Hafnium (Hf), % 0
0 to 0.020
Hydrogen (H), % 0
0 to 0.0015
Iron (Fe), % 55.1 to 66
0 to 0.010
Manganese (Mn), % 0 to 1.5
0
Molybdenum (Mo), % 0
0 to 0.020
Nickel (Ni), % 8.0 to 11
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 2.0
0 to 0.0050
Sulfur (S), % 0 to 0.040
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