MakeItFrom.com
Menu (ESC)

R30155 Cobalt vs. WE54A Magnesium

R30155 cobalt belongs to the iron alloys classification, while WE54A magnesium belongs to the magnesium alloys. There are 29 material properties with values for both materials. Properties with values for just one material (6, in this case) are not shown. Please note that the two materials have significantly dissimilar densities. This means that additional care is required when interpreting the data, because some material properties are based on units of mass, while others are based on units of area or volume.

For each property being compared, the top bar is R30155 cobalt and the bottom bar is WE54A magnesium.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 220
85
Elastic (Young's, Tensile) Modulus, GPa 210
44
Elongation at Break, % 34
4.3 to 5.6
Fatigue Strength, MPa 310
98 to 130
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 81
17
Shear Strength, MPa 570
150 to 170
Tensile Strength: Ultimate (UTS), MPa 850
270 to 300
Tensile Strength: Yield (Proof), MPa 390
180

Thermal Properties

Latent Heat of Fusion, J/g 300
330
Maximum Temperature: Mechanical, °C 1100
170
Melting Completion (Liquidus), °C 1470
640
Melting Onset (Solidus), °C 1420
570
Specific Heat Capacity, J/kg-K 450
960
Thermal Conductivity, W/m-K 12
52
Thermal Expansion, µm/m-K 14
25

Otherwise Unclassified Properties

Base Metal Price, % relative 80
34
Density, g/cm3 8.5
1.9
Embodied Carbon, kg CO2/kg material 9.7
29
Embodied Energy, MJ/kg 150
260
Embodied Water, L/kg 300
900

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 230
10 to 14
Resilience: Unit (Modulus of Resilience), kJ/m3 370
360 to 380
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 23
62
Strength to Weight: Axial, points 28
39 to 43
Strength to Weight: Bending, points 24
49 to 51
Thermal Diffusivity, mm2/s 3.2
28
Thermal Shock Resistance, points 21
18 to 19

Alloy Composition

Carbon (C), % 0.080 to 0.16
0
Chromium (Cr), % 20 to 22.5
0
Cobalt (Co), % 18.5 to 21
0
Copper (Cu), % 0
0 to 0.030
Iron (Fe), % 24.3 to 36.2
0 to 0.010
Lithium (Li), % 0
0 to 0.2
Magnesium (Mg), % 0
88.7 to 93.4
Manganese (Mn), % 1.0 to 2.0
0 to 0.030
Molybdenum (Mo), % 2.5 to 3.5
0
Nickel (Ni), % 19 to 21
0 to 0.0050
Niobium (Nb), % 0.75 to 1.3
0
Nitrogen (N), % 0 to 0.2
0
Phosphorus (P), % 0 to 0.040
0
Silicon (Si), % 0 to 1.0
0 to 0.010
Sulfur (S), % 0 to 0.030
0
Tantalum (Ta), % 0.75 to 1.3
0
Tungsten (W), % 2.0 to 3.0
0
Unspecified Rare Earths, % 0
1.5 to 4.0
Yttrium (Y), % 0
4.8 to 5.5
Zinc (Zn), % 0
0 to 0.2
Zirconium (Zr), % 0
0.4 to 1.0
Residuals, % 0
0 to 0.3