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ACI-ASTM CK35MN Steel vs. R05200 Tantalum

ACI-ASTM CK35MN steel belongs to the iron alloys classification, while R05200 tantalum belongs to the otherwise unclassified metals. There are 20 material properties with values for both materials. Properties with values for just one material (12, 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 ACI-ASTM CK35MN steel and the bottom bar is R05200 tantalum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 210
190
Elongation at Break, % 40
1.1 to 28
Poisson's Ratio 0.28
0.34
Shear Modulus, GPa 81
69
Tensile Strength: Ultimate (UTS), MPa 650
210 to 540
Tensile Strength: Yield (Proof), MPa 310
140 to 390

Thermal Properties

Latent Heat of Fusion, J/g 310
140
Specific Heat Capacity, J/kg-K 470
140
Thermal Conductivity, W/m-K 12
59
Thermal Expansion, µm/m-K 16
6.5

Otherwise Unclassified Properties

Density, g/cm3 8.0
17
Embodied Water, L/kg 210
650

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 210
5.5 to 53
Resilience: Unit (Modulus of Resilience), kJ/m3 240
50 to 420
Stiffness to Weight: Axial, points 14
6.2
Stiffness to Weight: Bending, points 25
11
Strength to Weight: Axial, points 22
3.6 to 9.0
Strength to Weight: Bending, points 21
4.8 to 8.8
Thermal Diffusivity, mm2/s 3.3
25
Thermal Shock Resistance, points 14
13 to 32

Alloy Composition

Carbon (C), % 0 to 0.035
0 to 0.010
Chromium (Cr), % 22 to 24
0
Copper (Cu), % 0 to 0.4
0
Hydrogen (H), % 0
0 to 0.0015
Iron (Fe), % 43.4 to 51.8
0 to 0.010
Manganese (Mn), % 0 to 2.0
0
Molybdenum (Mo), % 6.0 to 6.8
0 to 0.020
Nickel (Ni), % 20 to 22
0 to 0.010
Niobium (Nb), % 0
0 to 0.1
Nitrogen (N), % 0.21 to 0.32
0 to 0.010
Oxygen (O), % 0
0 to 0.015
Phosphorus (P), % 0 to 0.035
0
Silicon (Si), % 0 to 1.0
0 to 0.0050
Sulfur (S), % 0 to 0.020
0
Tantalum (Ta), % 0
99.8 to 100
Titanium (Ti), % 0
0 to 0.010
Tungsten (W), % 0
0 to 0.050