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R05400 Tantalum vs. S46500 Stainless Steel

R05400 tantalum belongs to the otherwise unclassified metals classification, while S46500 stainless steel belongs to the iron alloys. There are 17 material properties with values for both materials. Properties with values for just one material (14, 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 R05400 tantalum and the bottom bar is S46500 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 1.1 to 28
2.3 to 14
Poisson's Ratio 0.34
0.28
Shear Modulus, GPa 69
75
Tensile Strength: Ultimate (UTS), MPa 210 to 540
1260 to 1930
Tensile Strength: Yield (Proof), MPa 140 to 390
1120 to 1810

Thermal Properties

Latent Heat of Fusion, J/g 140
280
Specific Heat Capacity, J/kg-K 140
470
Thermal Expansion, µm/m-K 6.5
11

Otherwise Unclassified Properties

Density, g/cm3 17
7.9
Embodied Water, L/kg 650
120

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 5.5 to 53
43 to 210
Stiffness to Weight: Axial, points 6.2
14
Stiffness to Weight: Bending, points 11
25
Strength to Weight: Axial, points 3.6 to 9.0
44 to 68
Strength to Weight: Bending, points 4.8 to 8.8
33 to 44
Thermal Shock Resistance, points 13 to 32
44 to 67

Alloy Composition

Carbon (C), % 0 to 0.010
0 to 0.020
Chromium (Cr), % 0
11 to 12.5
Hydrogen (H), % 0 to 0.0015
0
Iron (Fe), % 0 to 0.010
72.6 to 76.1
Manganese (Mn), % 0
0 to 0.25
Molybdenum (Mo), % 0 to 0.020
0.75 to 1.3
Nickel (Ni), % 0 to 0.010
10.7 to 11.3
Niobium (Nb), % 0 to 0.1
0
Nitrogen (N), % 0 to 0.010
0 to 0.010
Oxygen (O), % 0 to 0.030
0
Phosphorus (P), % 0
0 to 0.015
Silicon (Si), % 0 to 0.0050
0 to 0.25
Sulfur (S), % 0
0 to 0.010
Tantalum (Ta), % 99.7 to 100
0
Titanium (Ti), % 0 to 0.010
1.5 to 1.8
Tungsten (W), % 0 to 0.050
0

Comparable Variants