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EN 1.6554 Steel vs. R05400 Tantalum

EN 1.6554 steel belongs to the iron alloys classification, while R05400 tantalum belongs to the otherwise unclassified metals. There are 20 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 EN 1.6554 steel and the bottom bar is R05400 tantalum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 17 to 21
1.1 to 28
Poisson's Ratio 0.29
0.34
Shear Modulus, GPa 73
69
Tensile Strength: Ultimate (UTS), MPa 780 to 930
210 to 540
Tensile Strength: Yield (Proof), MPa 550 to 790
140 to 390

Thermal Properties

Latent Heat of Fusion, J/g 250
140
Specific Heat Capacity, J/kg-K 470
140
Thermal Conductivity, W/m-K 40
59
Thermal Expansion, µm/m-K 13
6.5

Otherwise Unclassified Properties

Density, g/cm3 7.9
17
Embodied Water, L/kg 53
650

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 140 to 150
5.5 to 53
Resilience: Unit (Modulus of Resilience), kJ/m3 810 to 1650
50 to 420
Stiffness to Weight: Axial, points 13
6.2
Stiffness to Weight: Bending, points 24
11
Strength to Weight: Axial, points 27 to 33
3.6 to 9.0
Strength to Weight: Bending, points 24 to 27
4.8 to 8.8
Thermal Diffusivity, mm2/s 11
25
Thermal Shock Resistance, points 23 to 27
13 to 32

Alloy Composition

Carbon (C), % 0.23 to 0.28
0 to 0.010
Chromium (Cr), % 0.7 to 0.9
0
Copper (Cu), % 0 to 0.3
0
Hydrogen (H), % 0
0 to 0.0015
Iron (Fe), % 94.6 to 97.3
0 to 0.010
Manganese (Mn), % 0.6 to 0.9
0
Molybdenum (Mo), % 0.2 to 0.3
0 to 0.020
Nickel (Ni), % 1.0 to 2.0
0 to 0.010
Niobium (Nb), % 0
0 to 0.1
Nitrogen (N), % 0
0 to 0.010
Oxygen (O), % 0
0 to 0.030
Phosphorus (P), % 0 to 0.030
0
Silicon (Si), % 0 to 0.6
0 to 0.0050
Sulfur (S), % 0 to 0.025
0
Tantalum (Ta), % 0
99.7 to 100
Titanium (Ti), % 0
0 to 0.010
Tungsten (W), % 0
0 to 0.050
Vanadium (V), % 0 to 0.030
0

Comparable Variants