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Grade 350 Maraging Steel vs. R05400 Tantalum

Grade 350 maraging steel belongs to the iron alloys classification, while R05400 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 350 maraging steel and the bottom bar is R05400 tantalum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 4.1 to 18
1.1 to 28
Poisson's Ratio 0.3
0.34
Shear Modulus, GPa 75
69
Tensile Strength: Ultimate (UTS), MPa 1140 to 2420
210 to 540
Tensile Strength: Yield (Proof), MPa 830 to 2300
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 160
650

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 98 to 190
5.5 to 53
Stiffness to Weight: Axial, points 13
6.2
Stiffness to Weight: Bending, points 23
11
Strength to Weight: Axial, points 38 to 82
3.6 to 9.0
Strength to Weight: Bending, points 29 to 49
4.8 to 8.8
Thermal Shock Resistance, points 35 to 74
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), % 11.5 to 12.5
0
Hydrogen (H), % 0
0 to 0.0015
Iron (Fe), % 61.2 to 64.6
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 0.030
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
99.7 to 100
Titanium (Ti), % 1.3 to 1.6
0 to 0.010
Tungsten (W), % 0
0 to 0.050
Zirconium (Zr), % 0 to 0.020
0

Comparable Variants