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AWS BMg-1 vs. C96800 Copper

AWS BMg-1 belongs to the magnesium alloys classification, while C96800 copper belongs to the copper alloys. There are 28 material properties with values for both materials. Properties with values for just one material (3, 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 C96800 copper.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 47
120
Elongation at Break, % 3.8
3.4
Poisson's Ratio 0.29
0.34
Shear Modulus, GPa 18
46
Tensile Strength: Ultimate (UTS), MPa 180
1010
Tensile Strength: Yield (Proof), MPa 110
860

Thermal Properties

Latent Heat of Fusion, J/g 350
220
Maximum Temperature: Mechanical, °C 130
220
Melting Completion (Liquidus), °C 600
1120
Melting Onset (Solidus), °C 440
1060
Specific Heat Capacity, J/kg-K 980
390
Thermal Conductivity, W/m-K 76
52
Thermal Expansion, µm/m-K 26
17

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 11
10
Electrical Conductivity: Equal Weight (Specific), % IACS 55
10

Otherwise Unclassified Properties

Base Metal Price, % relative 12
34
Density, g/cm3 1.8
8.9
Embodied Carbon, kg CO2/kg material 22
3.4
Embodied Energy, MJ/kg 160
52
Embodied Water, L/kg 980
300

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 5.9
33
Resilience: Unit (Modulus of Resilience), kJ/m3 120
3000
Stiffness to Weight: Axial, points 14
7.6
Stiffness to Weight: Bending, points 66
19
Strength to Weight: Axial, points 27
32
Strength to Weight: Bending, points 39
25
Thermal Diffusivity, mm2/s 43
15
Thermal Shock Resistance, points 10
35

Alloy Composition

Aluminum (Al), % 8.3 to 9.7
0 to 0.1
Antimony (Sb), % 0
0 to 0.020
Beryllium (Be), % 0.00020 to 0.00080
0
Copper (Cu), % 0 to 0.050
87.1 to 90.5
Iron (Fe), % 0 to 0.0050
0 to 0.5
Lead (Pb), % 0
0 to 0.0050
Magnesium (Mg), % 86.1 to 89.8
0
Manganese (Mn), % 0.15 to 1.5
0.050 to 0.3
Nickel (Ni), % 0 to 0.0050
9.5 to 10.5
Phosphorus (P), % 0
0 to 0.0050
Silicon (Si), % 0 to 0.050
0
Sulfur (S), % 0
0 to 0.0025
Zinc (Zn), % 1.7 to 2.3
0 to 1.0
Residuals, % 0
0 to 0.5