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EN 2.4964 Cobalt vs. SAE-AISI 1340 Steel

EN 2.4964 cobalt belongs to the cobalt alloys classification, while SAE-AISI 1340 steel belongs to the iron alloys. 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 EN 2.4964 cobalt and the bottom bar is SAE-AISI 1340 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 220
190
Elongation at Break, % 40
11 to 23
Fatigue Strength, MPa 220
220 to 390
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 86
72
Tensile Strength: Ultimate (UTS), MPa 960
540 to 730
Tensile Strength: Yield (Proof), MPa 390
300 to 620

Thermal Properties

Latent Heat of Fusion, J/g 290
250
Melting Completion (Liquidus), °C 1630
1450
Melting Onset (Solidus), °C 1550
1410
Specific Heat Capacity, J/kg-K 400
470
Thermal Conductivity, W/m-K 15
51
Thermal Expansion, µm/m-K 12
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.9
7.2
Electrical Conductivity: Equal Weight (Specific), % IACS 1.8
8.3

Otherwise Unclassified Properties

Density, g/cm3 9.6
7.8
Embodied Carbon, kg CO2/kg material 9.8
1.4
Embodied Energy, MJ/kg 140
19
Embodied Water, L/kg 450
48

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 310
78 to 110
Resilience: Unit (Modulus of Resilience), kJ/m3 340
240 to 1040
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 21
24
Strength to Weight: Axial, points 28
19 to 26
Strength to Weight: Bending, points 23
19 to 23
Thermal Diffusivity, mm2/s 3.9
14
Thermal Shock Resistance, points 25
17 to 23

Alloy Composition

Carbon (C), % 0.050 to 0.15
0.38 to 0.43
Chromium (Cr), % 19 to 21
0
Cobalt (Co), % 46.4 to 58
0
Iron (Fe), % 0 to 3.0
97.2 to 97.9
Manganese (Mn), % 0 to 2.0
1.6 to 1.9
Nickel (Ni), % 9.0 to 11
0
Phosphorus (P), % 0 to 0.020
0 to 0.035
Silicon (Si), % 0 to 0.4
0.15 to 0.35
Sulfur (S), % 0 to 0.015
0 to 0.040
Tungsten (W), % 14 to 16
0