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EN 2.4964 Cobalt vs. ZA-8

EN 2.4964 cobalt belongs to the cobalt alloys classification, while ZA-8 belongs to the zinc alloys. There are 27 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 ZA-8.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 220
85 to 86
Elongation at Break, % 40
1.3 to 8.0
Fatigue Strength, MPa 220
51 to 100
Poisson's Ratio 0.29
0.26
Shear Modulus, GPa 86
34
Tensile Strength: Ultimate (UTS), MPa 960
210 to 370
Tensile Strength: Yield (Proof), MPa 390
210 to 290

Thermal Properties

Latent Heat of Fusion, J/g 290
110
Melting Completion (Liquidus), °C 1630
400
Melting Onset (Solidus), °C 1550
380
Specific Heat Capacity, J/kg-K 400
440
Thermal Conductivity, W/m-K 15
120
Thermal Expansion, µm/m-K 12
23

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.9
28
Electrical Conductivity: Equal Weight (Specific), % IACS 1.8
40

Otherwise Unclassified Properties

Density, g/cm3 9.6
6.3
Embodied Carbon, kg CO2/kg material 9.8
3.3
Embodied Energy, MJ/kg 140
62
Embodied Water, L/kg 450
420

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 310
2.8 to 28
Resilience: Unit (Modulus of Resilience), kJ/m3 340
260 to 490
Stiffness to Weight: Axial, points 13
7.5
Stiffness to Weight: Bending, points 21
23
Strength to Weight: Axial, points 28
9.3 to 17
Strength to Weight: Bending, points 23
12 to 18
Thermal Diffusivity, mm2/s 3.9
42
Thermal Shock Resistance, points 25
7.6 to 13

Alloy Composition

Aluminum (Al), % 0
8.0 to 8.8
Cadmium (Cd), % 0
0 to 0.0060
Carbon (C), % 0.050 to 0.15
0
Chromium (Cr), % 19 to 21
0
Cobalt (Co), % 46.4 to 58
0
Copper (Cu), % 0
0.8 to 1.3
Iron (Fe), % 0 to 3.0
0 to 0.075
Lead (Pb), % 0
0 to 0.0060
Magnesium (Mg), % 0
0.015 to 0.030
Manganese (Mn), % 0 to 2.0
0
Nickel (Ni), % 9.0 to 11
0 to 0.020
Phosphorus (P), % 0 to 0.020
0
Silicon (Si), % 0 to 0.4
0 to 0.045
Sulfur (S), % 0 to 0.015
0
Tin (Sn), % 0
0 to 0.0030
Tungsten (W), % 14 to 16
0
Zinc (Zn), % 0
89.7 to 91.2