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ASTM Grade LC3 Steel vs. Type 3 Niobium

ASTM grade LC3 steel belongs to the iron alloys classification, while Type 3 niobium belongs to the otherwise unclassified metals. There are 21 material properties with values for both materials. Properties with values for just one material (10, in this case) are not shown.

For each property being compared, the top bar is ASTM grade LC3 steel and the bottom bar is Type 3 niobium.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 170
110
Elastic (Young's, Tensile) Modulus, GPa 190
100
Elongation at Break, % 27
23
Poisson's Ratio 0.29
0.4
Shear Modulus, GPa 73
38
Tensile Strength: Ultimate (UTS), MPa 570
220
Tensile Strength: Yield (Proof), MPa 310
140

Thermal Properties

Latent Heat of Fusion, J/g 250
310
Specific Heat Capacity, J/kg-K 470
270
Thermal Conductivity, W/m-K 52
42
Thermal Expansion, µm/m-K 13
7.3

Otherwise Unclassified Properties

Density, g/cm3 7.9
8.6
Embodied Water, L/kg 52
160

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 130
44
Resilience: Unit (Modulus of Resilience), kJ/m3 260
93
Stiffness to Weight: Axial, points 13
6.8
Stiffness to Weight: Bending, points 24
18
Strength to Weight: Axial, points 20
7.2
Strength to Weight: Bending, points 19
9.5
Thermal Diffusivity, mm2/s 14
18
Thermal Shock Resistance, points 17
21

Alloy Composition

Carbon (C), % 0 to 0.15
0 to 0.010
Hafnium (Hf), % 0
0 to 0.020
Hydrogen (H), % 0
0 to 0.0015
Iron (Fe), % 94.4 to 96.5
0 to 0.0050
Manganese (Mn), % 0.5 to 0.8
0
Molybdenum (Mo), % 0
0 to 0.010
Nickel (Ni), % 3.0 to 4.0
0 to 0.0050
Niobium (Nb), % 0
98.6 to 99.2
Nitrogen (N), % 0
0 to 0.010
Oxygen (O), % 0
0 to 0.015
Phosphorus (P), % 0 to 0.040
0
Silicon (Si), % 0 to 0.6
0 to 0.0050
Sulfur (S), % 0 to 0.045
0
Tantalum (Ta), % 0
0 to 0.1
Titanium (Ti), % 0
0 to 0.020
Tungsten (W), % 0
0 to 0.030
Zirconium (Zr), % 0
0.8 to 1.2