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SAE-AISI T8 Steel vs. R05400 Tantalum

SAE-AISI T8 steel belongs to the iron alloys classification, while R05400 tantalum belongs to the otherwise unclassified metals. There are 16 material properties with values for both materials. Properties with values for just one material (10, in this case) are not shown.

For each property being compared, the top bar is SAE-AISI T8 steel and the bottom bar is R05400 tantalum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
190
Poisson's Ratio 0.29
0.34
Shear Modulus, GPa 78
69
Tensile Strength: Ultimate (UTS), MPa 780 to 2140
210 to 540

Thermal Properties

Latent Heat of Fusion, J/g 250
140
Specific Heat Capacity, J/kg-K 420
140
Thermal Conductivity, W/m-K 18
59
Thermal Expansion, µm/m-K 12
6.5

Otherwise Unclassified Properties

Density, g/cm3 9.0
17
Embodied Water, L/kg 120
650

Common Calculations

Stiffness to Weight: Axial, points 12
6.2
Stiffness to Weight: Bending, points 22
11
Strength to Weight: Axial, points 24 to 66
3.6 to 9.0
Strength to Weight: Bending, points 21 to 41
4.8 to 8.8
Thermal Diffusivity, mm2/s 4.8
25
Thermal Shock Resistance, points 24 to 66
13 to 32

Alloy Composition

Carbon (C), % 0.75 to 0.85
0 to 0.010
Chromium (Cr), % 3.8 to 4.5
0
Cobalt (Co), % 4.3 to 5.8
0
Copper (Cu), % 0 to 0.25
0
Hydrogen (H), % 0
0 to 0.0015
Iron (Fe), % 69.3 to 75.4
0 to 0.010
Manganese (Mn), % 0.2 to 0.4
0
Molybdenum (Mo), % 0.4 to 1.0
0 to 0.020
Nickel (Ni), % 0 to 0.3
0 to 0.010
Niobium (Nb), % 0
0 to 0.1
Nitrogen (N), % 0
0 to 0.010
Oxygen (O), % 0
0 to 0.030
Phosphorus (P), % 0 to 0.030
0
Silicon (Si), % 0.2 to 0.4
0 to 0.0050
Sulfur (S), % 0 to 0.030
0
Tantalum (Ta), % 0
99.7 to 100
Titanium (Ti), % 0
0 to 0.010
Tungsten (W), % 13.3 to 14.8
0 to 0.050
Vanadium (V), % 1.8 to 2.4
0

Comparable Variants