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AWS ERTi-12 vs. R05200 Tantalum

AWS ERTi-12 belongs to the titanium alloys classification, while R05200 tantalum belongs to the otherwise unclassified metals. There are 20 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 AWS ERTi-12 and the bottom bar is R05200 tantalum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 110
190
Elongation at Break, % 12
1.1 to 28
Poisson's Ratio 0.32
0.34
Shear Modulus, GPa 41
69
Tensile Strength: Ultimate (UTS), MPa 480
210 to 540
Tensile Strength: Yield (Proof), MPa 340
140 to 390

Thermal Properties

Latent Heat of Fusion, J/g 420
140
Specific Heat Capacity, J/kg-K 540
140
Thermal Conductivity, W/m-K 21
59
Thermal Expansion, µm/m-K 8.7
6.5

Otherwise Unclassified Properties

Density, g/cm3 4.5
17
Embodied Water, L/kg 110
650

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 52
5.5 to 53
Resilience: Unit (Modulus of Resilience), kJ/m3 550
50 to 420
Stiffness to Weight: Axial, points 13
6.2
Stiffness to Weight: Bending, points 35
11
Strength to Weight: Axial, points 30
3.6 to 9.0
Strength to Weight: Bending, points 30
4.8 to 8.8
Thermal Diffusivity, mm2/s 8.7
25
Thermal Shock Resistance, points 37
13 to 32

Alloy Composition

Carbon (C), % 0 to 0.030
0 to 0.010
Hydrogen (H), % 0 to 0.0080
0 to 0.0015
Iron (Fe), % 0 to 0.15
0 to 0.010
Molybdenum (Mo), % 0.2 to 0.4
0 to 0.020
Nickel (Ni), % 0.060 to 0.090
0 to 0.010
Niobium (Nb), % 0
0 to 0.1
Nitrogen (N), % 0 to 0.015
0 to 0.010
Oxygen (O), % 0.080 to 0.16
0 to 0.015
Silicon (Si), % 0
0 to 0.0050
Tantalum (Ta), % 0
99.8 to 100
Titanium (Ti), % 99.147 to 99.66
0 to 0.010
Tungsten (W), % 0
0 to 0.050