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Annealed R05400 Tantalum vs. ISO-WD21150-O

Annealed R05400 tantalum belongs to the otherwise unclassified metals classification, while ISO-WD21150-O belongs to the magnesium alloys. There are 21 material properties with values for both materials. Properties with values for just one material (9, 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 annealed R05400 tantalum and the bottom bar is ISO-WD21150-O.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
45
Elongation at Break, % 28
11
Poisson's Ratio 0.34
0.29
Shear Modulus, GPa 69
17
Tensile Strength: Ultimate (UTS), MPa 210
240
Tensile Strength: Yield (Proof), MPa 140
120

Thermal Properties

Latent Heat of Fusion, J/g 140
350
Melting Completion (Liquidus), °C 3020
600
Specific Heat Capacity, J/kg-K 140
990
Thermal Conductivity, W/m-K 59
100
Thermal Expansion, µm/m-K 6.5
27

Otherwise Unclassified Properties

Density, g/cm3 17
1.7
Embodied Water, L/kg 650
980

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 53
23
Resilience: Unit (Modulus of Resilience), kJ/m3 50
160
Stiffness to Weight: Axial, points 6.2
15
Stiffness to Weight: Bending, points 11
70
Strength to Weight: Axial, points 3.6
40
Strength to Weight: Bending, points 4.8
52
Thermal Diffusivity, mm2/s 25
60
Thermal Shock Resistance, points 13
15

Alloy Composition

Aluminum (Al), % 0
2.4 to 3.6
Carbon (C), % 0 to 0.010
0
Copper (Cu), % 0
0 to 0.050
Hydrogen (H), % 0 to 0.0015
0
Iron (Fe), % 0 to 0.010
0 to 0.0050
Magnesium (Mg), % 0
94 to 97
Manganese (Mn), % 0
0.15 to 0.4
Molybdenum (Mo), % 0 to 0.020
0
Nickel (Ni), % 0 to 0.010
0 to 0.0050
Niobium (Nb), % 0 to 0.1
0
Nitrogen (N), % 0 to 0.010
0
Oxygen (O), % 0 to 0.030
0
Silicon (Si), % 0 to 0.0050
0 to 0.1
Tantalum (Ta), % 99.7 to 100
0
Titanium (Ti), % 0 to 0.010
0
Tungsten (W), % 0 to 0.050
0
Zinc (Zn), % 0
0.5 to 1.5
Residuals, % 0
0 to 0.3