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Grade 300 Maraging Steel vs. R05200 Tantalum

Grade 300 maraging steel belongs to the iron alloys classification, while R05200 tantalum belongs to the otherwise unclassified metals. There are 17 material properties with values for both materials. Properties with values for just one material (12, in this case) are not shown. Please note that the two materials have significantly dissimilar densities. This means that additional care is required when interpreting the data, because some material properties are based on units of mass, while others are based on units of area or volume.

For each property being compared, the top bar is grade 300 maraging steel and the bottom bar is R05200 tantalum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 6.5 to 18
1.1 to 28
Poisson's Ratio 0.3
0.34
Shear Modulus, GPa 75
69
Tensile Strength: Ultimate (UTS), MPa 1030 to 2030
210 to 540
Tensile Strength: Yield (Proof), MPa 760 to 1990
140 to 390

Thermal Properties

Latent Heat of Fusion, J/g 270
140
Specific Heat Capacity, J/kg-K 450
140
Thermal Expansion, µm/m-K 12
6.5

Otherwise Unclassified Properties

Density, g/cm3 8.2
17
Embodied Water, L/kg 150
650

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 130 to 170
5.5 to 53
Stiffness to Weight: Axial, points 13
6.2
Stiffness to Weight: Bending, points 23
11
Strength to Weight: Axial, points 35 to 68
3.6 to 9.0
Strength to Weight: Bending, points 28 to 43
4.8 to 8.8
Thermal Shock Resistance, points 31 to 62
13 to 32

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
Hydrogen (H), % 0
0 to 0.0015
Iron (Fe), % 65 to 68.4
0 to 0.010
Manganese (Mn), % 0 to 0.1
0
Molybdenum (Mo), % 4.6 to 5.2
0 to 0.020
Nickel (Ni), % 18 to 19
0 to 0.010
Niobium (Nb), % 0
0 to 0.1
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
99.8 to 100
Titanium (Ti), % 0.5 to 0.8
0 to 0.010
Tungsten (W), % 0
0 to 0.050
Zirconium (Zr), % 0 to 0.020
0

Comparable Variants