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AWS E320LR vs. R05400 Tantalum

AWS E320LR belongs to the iron alloys classification, while R05400 tantalum belongs to the otherwise unclassified metals. There are 15 material properties with values for both materials. Properties with values for just one material (11, 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 E320LR and the bottom bar is R05400 tantalum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
190
Elongation at Break, % 34
1.1 to 28
Poisson's Ratio 0.28
0.34
Shear Modulus, GPa 77
69
Tensile Strength: Ultimate (UTS), MPa 580
210 to 540

Thermal Properties

Latent Heat of Fusion, J/g 300
140
Specific Heat Capacity, J/kg-K 460
140
Thermal Expansion, µm/m-K 14
6.5

Otherwise Unclassified Properties

Density, g/cm3 8.2
17
Embodied Water, L/kg 220
650

Common Calculations

Stiffness to Weight: Axial, points 13
6.2
Stiffness to Weight: Bending, points 24
11
Strength to Weight: Axial, points 20
3.6 to 9.0
Strength to Weight: Bending, points 19
4.8 to 8.8
Thermal Shock Resistance, points 15
13 to 32

Alloy Composition

Carbon (C), % 0 to 0.030
0 to 0.010
Chromium (Cr), % 19 to 21
0
Copper (Cu), % 3.0 to 4.0
0
Hydrogen (H), % 0
0 to 0.0015
Iron (Fe), % 32.7 to 42.5
0 to 0.010
Manganese (Mn), % 1.5 to 2.5
0
Molybdenum (Mo), % 2.0 to 3.0
0 to 0.020
Nickel (Ni), % 32 to 36
0 to 0.010
Niobium (Nb), % 0 to 0.4
0 to 0.1
Nitrogen (N), % 0
0 to 0.010
Oxygen (O), % 0
0 to 0.030
Phosphorus (P), % 0 to 0.020
0
Silicon (Si), % 0 to 0.3
0 to 0.0050
Sulfur (S), % 0 to 0.015
0
Tantalum (Ta), % 0
99.7 to 100
Titanium (Ti), % 0
0 to 0.010
Tungsten (W), % 0
0 to 0.050