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EN 2.4964 Cobalt vs. SAE-AISI M34 Steel

EN 2.4964 cobalt belongs to the cobalt alloys classification, while SAE-AISI M34 steel belongs to the iron alloys. 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 M34 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
77
Tensile Strength: Ultimate (UTS), MPa 960
800 to 2170

Thermal Properties

Latent Heat of Fusion, J/g 290
270
Melting Completion (Liquidus), °C 1630
1540
Melting Onset (Solidus), °C 1550
1500
Specific Heat Capacity, J/kg-K 400
450
Thermal Conductivity, W/m-K 15
24
Thermal Expansion, µm/m-K 12
12

Otherwise Unclassified Properties

Density, g/cm3 9.6
8.2
Embodied Carbon, kg CO2/kg material 9.8
9.5
Embodied Energy, MJ/kg 140
140
Embodied Water, L/kg 450
150

Common Calculations

Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 21
24
Strength to Weight: Axial, points 28
27 to 74
Strength to Weight: Bending, points 23
23 to 46
Thermal Diffusivity, mm2/s 3.9
6.7
Thermal Shock Resistance, points 25
25 to 67

Alloy Composition

Carbon (C), % 0.050 to 0.15
0.85 to 0.92
Chromium (Cr), % 19 to 21
3.5 to 4.0
Cobalt (Co), % 46.4 to 58
7.8 to 8.8
Copper (Cu), % 0
0 to 0.25
Iron (Fe), % 0 to 3.0
71.3 to 76.5
Manganese (Mn), % 0 to 2.0
0.15 to 0.4
Molybdenum (Mo), % 0
7.8 to 9.2
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 0.45
Sulfur (S), % 0 to 0.015
0 to 0.030
Tungsten (W), % 14 to 16
1.4 to 2.1
Vanadium (V), % 0
1.9 to 2.3