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AWS BMg-1 vs. CC381H Copper-nickel

AWS BMg-1 belongs to the magnesium alloys classification, while CC381H copper-nickel belongs to the copper alloys. There are 28 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 CC381H copper-nickel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 47
140
Elongation at Break, % 3.8
20
Poisson's Ratio 0.29
0.33
Shear Modulus, GPa 18
52
Tensile Strength: Ultimate (UTS), MPa 180
380
Tensile Strength: Yield (Proof), MPa 110
140

Thermal Properties

Latent Heat of Fusion, J/g 350
240
Maximum Temperature: Mechanical, °C 130
260
Melting Completion (Liquidus), °C 600
1180
Melting Onset (Solidus), °C 440
1120
Specific Heat Capacity, J/kg-K 980
410
Thermal Conductivity, W/m-K 76
30
Thermal Expansion, µm/m-K 26
16

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 11
6.8
Electrical Conductivity: Equal Weight (Specific), % IACS 55
6.9

Otherwise Unclassified Properties

Base Metal Price, % relative 12
40
Density, g/cm3 1.8
8.9
Embodied Carbon, kg CO2/kg material 22
5.0
Embodied Energy, MJ/kg 160
73
Embodied Water, L/kg 980
280

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 5.9
60
Resilience: Unit (Modulus of Resilience), kJ/m3 120
68
Stiffness to Weight: Axial, points 14
8.6
Stiffness to Weight: Bending, points 66
19
Strength to Weight: Axial, points 27
12
Strength to Weight: Bending, points 39
13
Thermal Diffusivity, mm2/s 43
8.4
Thermal Shock Resistance, points 10
13

Alloy Composition


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Aluminum (Al), % 8.3 to 9.7
0 to 0.010
Beryllium (Be), % 0.00020 to 0.00080
0
Carbon (C), % 0
0 to 0.030
Copper (Cu), % 0 to 0.050
64.5 to 69.9
Iron (Fe), % 0 to 0.0050
0.5 to 1.5
Lead (Pb), % 0
0 to 0.030
Magnesium (Mg), % 86.1 to 89.8
0
Manganese (Mn), % 0.15 to 1.5
0.6 to 1.2
Nickel (Ni), % 0 to 0.0050
29 to 31
Phosphorus (P), % 0
0 to 0.010
Silicon (Si), % 0 to 0.050
0 to 0.1
Sulfur (S), % 0
0 to 0.010
Zinc (Zn), % 1.7 to 2.3
0 to 0.5
Residuals, % 0 to 0.3
0