MakeItFrom.com
Menu (ESC)

ZA-8 vs. R31538 Cobalt

ZA-8 belongs to the zinc alloys classification, while R31538 cobalt belongs to the cobalt alloys. There are 27 material properties with values for both materials. Properties with values for just one material (11, in this case) are not shown.

For each property being compared, the top bar is ZA-8 and the bottom bar is R31538 cobalt.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 85 to 86
220
Elongation at Break, % 1.3 to 8.0
13 to 23
Fatigue Strength, MPa 51 to 100
310 to 480
Poisson's Ratio 0.26
0.29
Shear Modulus, GPa 34
86
Tensile Strength: Ultimate (UTS), MPa 210 to 370
1020 to 1360
Tensile Strength: Yield (Proof), MPa 210 to 290
580 to 930

Thermal Properties

Latent Heat of Fusion, J/g 110
320
Melting Completion (Liquidus), °C 400
1360
Melting Onset (Solidus), °C 380
1290
Specific Heat Capacity, J/kg-K 440
450
Thermal Conductivity, W/m-K 120
13
Thermal Expansion, µm/m-K 23
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 28
2.0
Electrical Conductivity: Equal Weight (Specific), % IACS 40
2.1

Otherwise Unclassified Properties

Density, g/cm3 6.3
8.4
Embodied Carbon, kg CO2/kg material 3.3
8.1
Embodied Energy, MJ/kg 62
110
Embodied Water, L/kg 420
530

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 2.8 to 28
140 to 200
Resilience: Unit (Modulus of Resilience), kJ/m3 260 to 490
750 to 1920
Stiffness to Weight: Axial, points 7.5
15
Stiffness to Weight: Bending, points 23
24
Strength to Weight: Axial, points 9.3 to 17
34 to 45
Strength to Weight: Bending, points 12 to 18
27 to 32
Thermal Diffusivity, mm2/s 42
3.5
Thermal Shock Resistance, points 7.6 to 13
25 to 33

Alloy Composition

Aluminum (Al), % 8.0 to 8.8
0
Cadmium (Cd), % 0 to 0.0060
0
Carbon (C), % 0
0.15 to 0.35
Chromium (Cr), % 0
26 to 30
Cobalt (Co), % 0
58.7 to 68.9
Copper (Cu), % 0.8 to 1.3
0
Iron (Fe), % 0 to 0.075
0 to 0.75
Lead (Pb), % 0 to 0.0060
0
Magnesium (Mg), % 0.015 to 0.030
0
Manganese (Mn), % 0
0 to 1.0
Molybdenum (Mo), % 0
5.0 to 7.0
Nickel (Ni), % 0 to 0.020
0 to 1.0
Nitrogen (N), % 0
0 to 0.25
Silicon (Si), % 0 to 0.045
0 to 1.0
Tin (Sn), % 0 to 0.0030
0
Zinc (Zn), % 89.7 to 91.2
0

Comparable Variants