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AWS BMg-1 vs. EN 2.4964 Cobalt

AWS BMg-1 belongs to the magnesium alloys classification, while EN 2.4964 cobalt belongs to the cobalt alloys. There are 27 material properties with values for both materials. Properties with values for just one material (4, 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 AWS BMg-1 and the bottom bar is EN 2.4964 cobalt.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 47
220
Elongation at Break, % 3.8
40
Fatigue Strength, MPa 72
220
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 18
86
Tensile Strength: Ultimate (UTS), MPa 180
960
Tensile Strength: Yield (Proof), MPa 110
390

Thermal Properties

Latent Heat of Fusion, J/g 350
290
Melting Completion (Liquidus), °C 600
1630
Melting Onset (Solidus), °C 440
1550
Specific Heat Capacity, J/kg-K 980
400
Thermal Conductivity, W/m-K 76
15
Thermal Expansion, µm/m-K 26
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 11
1.9
Electrical Conductivity: Equal Weight (Specific), % IACS 55
1.8

Otherwise Unclassified Properties

Density, g/cm3 1.8
9.6
Embodied Carbon, kg CO2/kg material 22
9.8
Embodied Energy, MJ/kg 160
140
Embodied Water, L/kg 980
450

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 5.9
310
Resilience: Unit (Modulus of Resilience), kJ/m3 120
340
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 66
21
Strength to Weight: Axial, points 27
28
Strength to Weight: Bending, points 39
23
Thermal Diffusivity, mm2/s 43
3.9
Thermal Shock Resistance, points 10
25

Alloy Composition

Aluminum (Al), % 8.3 to 9.7
0
Beryllium (Be), % 0.00020 to 0.00080
0
Carbon (C), % 0
0.050 to 0.15
Chromium (Cr), % 0
19 to 21
Cobalt (Co), % 0
46.4 to 58
Copper (Cu), % 0 to 0.050
0
Iron (Fe), % 0 to 0.0050
0 to 3.0
Magnesium (Mg), % 86.1 to 89.8
0
Manganese (Mn), % 0.15 to 1.5
0 to 2.0
Nickel (Ni), % 0 to 0.0050
9.0 to 11
Phosphorus (P), % 0
0 to 0.020
Silicon (Si), % 0 to 0.050
0 to 0.4
Sulfur (S), % 0
0 to 0.015
Tungsten (W), % 0
14 to 16
Zinc (Zn), % 1.7 to 2.3
0
Residuals, % 0 to 0.3
0