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Grade 300 Maraging Steel vs. Type 1 Niobium

Grade 300 maraging 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 grade 300 maraging steel and the bottom bar is Type 1 niobium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
110
Elongation at Break, % 6.5 to 18
29
Poisson's Ratio 0.3
0.4
Shear Modulus, GPa 75
38
Tensile Strength: Ultimate (UTS), MPa 1030 to 2030
140
Tensile Strength: Yield (Proof), MPa 760 to 1990
82

Thermal Properties

Latent Heat of Fusion, J/g 270
320
Specific Heat Capacity, J/kg-K 450
270
Thermal Expansion, µm/m-K 12
7.3

Otherwise Unclassified Properties

Density, g/cm3 8.2
8.6
Embodied Water, L/kg 150
160

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 130 to 170
35
Stiffness to Weight: Axial, points 13
6.8
Stiffness to Weight: Bending, points 23
18
Strength to Weight: Axial, points 35 to 68
4.6
Strength to Weight: Bending, points 28 to 43
7.1
Thermal Shock Resistance, points 31 to 62
13

Alloy Composition

Aluminum (Al), % 0.050 to 0.15
0
Boron (B), % 0 to 0.0030
0
Calcium (Ca), % 0 to 0.050
0
Carbon (C), % 0 to 0.030
0 to 0.010
Cobalt (Co), % 8.5 to 9.5
0
Hafnium (Hf), % 0
0 to 0.020
Hydrogen (H), % 0
0 to 0.0015
Iron (Fe), % 65 to 68.4
0 to 0.0050
Manganese (Mn), % 0 to 0.1
0
Molybdenum (Mo), % 4.6 to 5.2
0 to 0.010
Nickel (Ni), % 18 to 19
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 0.010
0
Silicon (Si), % 0 to 0.1
0 to 0.0050
Sulfur (S), % 0 to 0.010
0
Tantalum (Ta), % 0
0 to 0.1
Titanium (Ti), % 0.5 to 0.8
0 to 0.020
Tungsten (W), % 0
0 to 0.030
Zirconium (Zr), % 0 to 0.020
0 to 0.020