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EN 1.4596 Stainless Steel vs. R05200 Tantalum

EN 1.4596 stainless steel belongs to the iron alloys classification, while R05200 tantalum belongs to the otherwise unclassified metals. There are 14 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 EN 1.4596 stainless steel and the bottom bar is R05200 tantalum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
190
Poisson's Ratio 0.28
0.34
Shear Modulus, GPa 76
69
Tensile Strength: Ultimate (UTS), MPa 1030 to 1600
210 to 540

Thermal Properties

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

Otherwise Unclassified Properties

Density, g/cm3 7.9
17
Embodied Water, L/kg 130
650

Common Calculations

Stiffness to Weight: Axial, points 14
6.2
Stiffness to Weight: Bending, points 25
11
Strength to Weight: Axial, points 36 to 56
3.6 to 9.0
Strength to Weight: Bending, points 29 to 39
4.8 to 8.8
Thermal Shock Resistance, points 35 to 54
13 to 32

Alloy Composition

Aluminum (Al), % 0.8 to 1.1
0
Carbon (C), % 0 to 0.015
0 to 0.010
Chromium (Cr), % 11.5 to 12.5
0
Hydrogen (H), % 0
0 to 0.0015
Iron (Fe), % 73.4 to 76.4
0 to 0.010
Manganese (Mn), % 0 to 0.1
0
Molybdenum (Mo), % 1.9 to 2.2
0 to 0.020
Nickel (Ni), % 9.2 to 10.2
0 to 0.010
Niobium (Nb), % 0
0 to 0.1
Nitrogen (N), % 0 to 0.020
0 to 0.010
Oxygen (O), % 0
0 to 0.015
Phosphorus (P), % 0 to 0.010
0
Silicon (Si), % 0 to 0.1
0 to 0.0050
Sulfur (S), % 0 to 0.0050
0
Tantalum (Ta), % 0
99.8 to 100
Titanium (Ti), % 0.28 to 0.4
0 to 0.010
Tungsten (W), % 0
0 to 0.050