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ACI-ASTM CE3MN Steel vs. EN 2.4964 Cobalt

ACI-ASTM CE3MN steel belongs to the iron alloys classification, while EN 2.4964 cobalt belongs to the cobalt alloys. They have a modest 29% of their average alloy composition in common, which, by itself, doesn't mean much. There are 27 material properties with values for both materials. Properties with values for just one material (4, in this case) are not shown.

For each property being compared, the top bar is ACI-ASTM CE3MN steel and the bottom bar is EN 2.4964 cobalt.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 210
220
Elongation at Break, % 20
40
Fatigue Strength, MPa 380
220
Poisson's Ratio 0.27
0.29
Shear Modulus, GPa 81
86
Tensile Strength: Ultimate (UTS), MPa 770
960
Tensile Strength: Yield (Proof), MPa 590
390

Thermal Properties

Latent Heat of Fusion, J/g 300
290
Melting Completion (Liquidus), °C 1450
1630
Melting Onset (Solidus), °C 1410
1550
Specific Heat Capacity, J/kg-K 470
400
Thermal Conductivity, W/m-K 15
15
Thermal Expansion, µm/m-K 13
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.2
1.9
Electrical Conductivity: Equal Weight (Specific), % IACS 2.5
1.8

Otherwise Unclassified Properties

Density, g/cm3 7.8
9.6
Embodied Carbon, kg CO2/kg material 4.2
9.8
Embodied Energy, MJ/kg 58
140
Embodied Water, L/kg 180
450

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 140
310
Resilience: Unit (Modulus of Resilience), kJ/m3 840
340
Stiffness to Weight: Axial, points 15
13
Stiffness to Weight: Bending, points 25
21
Strength to Weight: Axial, points 27
28
Strength to Weight: Bending, points 24
23
Thermal Diffusivity, mm2/s 4.1
3.9
Thermal Shock Resistance, points 21
25

Alloy Composition

Carbon (C), % 0 to 0.030
0.050 to 0.15
Chromium (Cr), % 24 to 26
19 to 21
Cobalt (Co), % 0
46.4 to 58
Iron (Fe), % 58.1 to 65.9
0 to 3.0
Manganese (Mn), % 0 to 1.5
0 to 2.0
Molybdenum (Mo), % 4.0 to 5.0
0
Nickel (Ni), % 6.0 to 8.0
9.0 to 11
Nitrogen (N), % 0.1 to 0.3
0
Phosphorus (P), % 0 to 0.040
0 to 0.020
Silicon (Si), % 0 to 1.0
0 to 0.4
Sulfur (S), % 0 to 0.040
0 to 0.015
Tungsten (W), % 0
14 to 16