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6261-O Aluminum vs. Annealed R05200 Tantalum

6261-O aluminum belongs to the aluminum alloys classification, while annealed R05200 tantalum belongs to the otherwise unclassified metals. 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 6261-O aluminum and the bottom bar is annealed R05200 tantalum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 69
190
Elongation at Break, % 16
28
Poisson's Ratio 0.33
0.34
Shear Modulus, GPa 26
69
Tensile Strength: Ultimate (UTS), MPa 150
210
Tensile Strength: Yield (Proof), MPa 100
140

Thermal Properties

Latent Heat of Fusion, J/g 400
140
Melting Completion (Liquidus), °C 640
3020
Specific Heat Capacity, J/kg-K 900
140
Thermal Conductivity, W/m-K 180
59
Thermal Expansion, µm/m-K 23
6.5

Otherwise Unclassified Properties

Density, g/cm3 2.7
17
Embodied Water, L/kg 1180
650

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 21
53
Resilience: Unit (Modulus of Resilience), kJ/m3 77
50
Stiffness to Weight: Axial, points 14
6.2
Stiffness to Weight: Bending, points 50
11
Strength to Weight: Axial, points 15
3.6
Strength to Weight: Bending, points 23
4.8
Thermal Diffusivity, mm2/s 75
25
Thermal Shock Resistance, points 6.7
13

Alloy Composition


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Aluminum (Al), % 96.6 to 98.6
0
Carbon (C), % 0
0 to 0.010
Chromium (Cr), % 0 to 0.1
0
Copper (Cu), % 0.15 to 0.4
0
Hydrogen (H), % 0
0 to 0.0015
Iron (Fe), % 0 to 0.4
0 to 0.010
Magnesium (Mg), % 0.7 to 1.0
0
Manganese (Mn), % 0.2 to 0.35
0
Molybdenum (Mo), % 0
0 to 0.020
Nickel (Ni), % 0
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
Silicon (Si), % 0.4 to 0.7
0 to 0.0050
Tantalum (Ta), % 0
99.8 to 100
Titanium (Ti), % 0 to 0.1
0 to 0.010
Tungsten (W), % 0
0 to 0.050
Zinc (Zn), % 0 to 0.2
0
Residuals, % 0 to 0.15
0