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R05200 Tantalum vs. R30556 Alloy

R05200 tantalum belongs to the otherwise unclassified metals classification, while R30556 alloy belongs to the iron alloys. There are 20 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 R05200 tantalum and the bottom bar is R30556 alloy.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
210
Elongation at Break, % 1.1 to 28
45
Poisson's Ratio 0.34
0.28
Shear Modulus, GPa 69
81
Tensile Strength: Ultimate (UTS), MPa 210 to 540
780
Tensile Strength: Yield (Proof), MPa 140 to 390
350

Thermal Properties

Latent Heat of Fusion, J/g 140
300
Specific Heat Capacity, J/kg-K 140
450
Thermal Conductivity, W/m-K 59
11
Thermal Expansion, µm/m-K 6.5
15

Otherwise Unclassified Properties

Density, g/cm3 17
8.4
Embodied Water, L/kg 650
300

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 5.5 to 53
290
Resilience: Unit (Modulus of Resilience), kJ/m3 50 to 420
290
Stiffness to Weight: Axial, points 6.2
14
Stiffness to Weight: Bending, points 11
23
Strength to Weight: Axial, points 3.6 to 9.0
26
Strength to Weight: Bending, points 4.8 to 8.8
22
Thermal Diffusivity, mm2/s 25
2.9
Thermal Shock Resistance, points 13 to 32
18

Alloy Composition

Aluminum (Al), % 0
0.1 to 0.5
Boron (B), % 0
0 to 0.020
Carbon (C), % 0 to 0.010
0.050 to 0.15
Chromium (Cr), % 0
21 to 23
Cobalt (Co), % 0
16 to 21
Hydrogen (H), % 0 to 0.0015
0
Iron (Fe), % 0 to 0.010
20.4 to 38.2
Lanthanum (La), % 0
0.0050 to 0.1
Manganese (Mn), % 0
0.5 to 2.0
Molybdenum (Mo), % 0 to 0.020
2.5 to 4.0
Nickel (Ni), % 0 to 0.010
19 to 22.5
Niobium (Nb), % 0 to 0.1
0 to 0.3
Nitrogen (N), % 0 to 0.010
0.1 to 0.3
Oxygen (O), % 0 to 0.015
0
Phosphorus (P), % 0
0 to 0.040
Silicon (Si), % 0 to 0.0050
0.2 to 0.8
Sulfur (S), % 0
0 to 0.015
Tantalum (Ta), % 99.8 to 100
0.3 to 1.3
Titanium (Ti), % 0 to 0.010
0
Tungsten (W), % 0 to 0.050
2.0 to 3.5
Zinc (Zn), % 0
0.0010 to 0.1