MakeItFrom.com
Menu (ESC)

R30021 Cobalt vs. Zamak 3

R30021 cobalt belongs to the cobalt alloys classification, while Zamak 3 belongs to the zinc alloys. There are 28 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 R30021 cobalt and the bottom bar is Zamak 3.

Metric UnitsUS Customary Units

Mechanical Properties

Compressive (Crushing) Strength, MPa 1300
410
Elastic (Young's, Tensile) Modulus, GPa 220
86
Elongation at Break, % 9.0
11
Fatigue Strength, MPa 250
48
Poisson's Ratio 0.29
0.25
Shear Modulus, GPa 86
33
Tensile Strength: Ultimate (UTS), MPa 700
280
Tensile Strength: Yield (Proof), MPa 500
210

Thermal Properties

Latent Heat of Fusion, J/g 330
120
Melting Completion (Liquidus), °C 1350
390
Melting Onset (Solidus), °C 1190
380
Specific Heat Capacity, J/kg-K 450
410
Thermal Conductivity, W/m-K 15
110
Thermal Expansion, µm/m-K 11
27

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.9
27
Electrical Conductivity: Equal Weight (Specific), % IACS 2.1
38

Otherwise Unclassified Properties

Density, g/cm3 8.4
6.4
Embodied Carbon, kg CO2/kg material 8.0
3.0
Embodied Energy, MJ/kg 110
57
Embodied Water, L/kg 520
380

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 57
28
Resilience: Unit (Modulus of Resilience), kJ/m3 570
260
Stiffness to Weight: Axial, points 15
7.5
Stiffness to Weight: Bending, points 24
23
Strength to Weight: Axial, points 23
12
Strength to Weight: Bending, points 21
15
Thermal Diffusivity, mm2/s 3.8
43
Thermal Shock Resistance, points 21
8.6

Alloy Composition

Aluminum (Al), % 0
3.5 to 4.3
Cadmium (Cd), % 0
0 to 0.0050
Carbon (C), % 0.2 to 0.35
0
Chromium (Cr), % 26 to 29
0
Cobalt (Co), % 61.7 to 67.3
0
Copper (Cu), % 0
0 to 0.25
Iron (Fe), % 0 to 3.0
0 to 0.1
Lead (Pb), % 0
0 to 0.0050
Magnesium (Mg), % 0
0.020 to 0.060
Molybdenum (Mo), % 4.5 to 6.0
0
Nickel (Ni), % 2.0 to 3.0
0 to 0.020
Silicon (Si), % 0 to 1.5
0 to 0.030
Tin (Sn), % 0
0 to 0.0030
Zinc (Zn), % 0
95.3 to 96.5