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EN 2.4964 Cobalt vs. SAE-AISI T1 Steel

EN 2.4964 cobalt belongs to the cobalt alloys classification, while SAE-AISI T1 steel belongs to the iron alloys. They have a modest 21% of their average alloy composition in common, which, by itself, doesn't mean much. There are 20 material properties with values for both materials. Properties with values for just one material (9, in this case) are not shown.

For each property being compared, the top bar is EN 2.4964 cobalt and the bottom bar is SAE-AISI T1 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 220
200
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 86
80
Tensile Strength: Ultimate (UTS), MPa 960
770 to 2130

Thermal Properties

Latent Heat of Fusion, J/g 290
240
Melting Completion (Liquidus), °C 1630
1810
Melting Onset (Solidus), °C 1550
1750
Specific Heat Capacity, J/kg-K 400
410
Thermal Conductivity, W/m-K 15
20
Thermal Expansion, µm/m-K 12
12

Otherwise Unclassified Properties

Density, g/cm3 9.6
9.3
Embodied Carbon, kg CO2/kg material 9.8
8.2
Embodied Energy, MJ/kg 140
130
Embodied Water, L/kg 450
90

Common Calculations

Stiffness to Weight: Axial, points 13
12
Stiffness to Weight: Bending, points 21
21
Strength to Weight: Axial, points 28
23 to 64
Strength to Weight: Bending, points 23
20 to 40
Thermal Diffusivity, mm2/s 3.9
5.2
Thermal Shock Resistance, points 25
23 to 64

Alloy Composition

Carbon (C), % 0.050 to 0.15
0.65 to 0.8
Chromium (Cr), % 19 to 21
3.8 to 4.5
Cobalt (Co), % 46.4 to 58
0
Copper (Cu), % 0
0 to 0.25
Iron (Fe), % 0 to 3.0
73.2 to 77.2
Manganese (Mn), % 0 to 2.0
0.1 to 0.4
Nickel (Ni), % 9.0 to 11
0 to 0.3
Phosphorus (P), % 0 to 0.020
0 to 0.030
Silicon (Si), % 0 to 0.4
0.2 to 0.4
Sulfur (S), % 0 to 0.015
0 to 0.030
Tungsten (W), % 14 to 16
17.3 to 18.8
Vanadium (V), % 0
0.9 to 1.3