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AWS BMg-1 vs. C71520 Copper-nickel

AWS BMg-1 belongs to the magnesium alloys classification, while C71520 copper-nickel belongs to the copper alloys. There are 29 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 C71520 copper-nickel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 47
140
Elongation at Break, % 3.8
10 to 45
Poisson's Ratio 0.29
0.33
Shear Modulus, GPa 18
51
Shear Strength, MPa 100
250 to 340
Tensile Strength: Ultimate (UTS), MPa 180
370 to 570
Tensile Strength: Yield (Proof), MPa 110
140 to 430

Thermal Properties

Latent Heat of Fusion, J/g 350
230
Maximum Temperature: Mechanical, °C 130
260
Melting Completion (Liquidus), °C 600
1170
Melting Onset (Solidus), °C 440
1120
Specific Heat Capacity, J/kg-K 980
400
Thermal Conductivity, W/m-K 76
32
Thermal Expansion, µm/m-K 26
15

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 11
5.7
Electrical Conductivity: Equal Weight (Specific), % IACS 55
5.8

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
54 to 130
Resilience: Unit (Modulus of Resilience), kJ/m3 120
67 to 680
Stiffness to Weight: Axial, points 14
8.6
Stiffness to Weight: Bending, points 66
19
Strength to Weight: Axial, points 27
12 to 18
Strength to Weight: Bending, points 39
13 to 17
Thermal Diffusivity, mm2/s 43
8.9
Thermal Shock Resistance, points 10
12 to 19

Alloy Composition

Aluminum (Al), % 8.3 to 9.7
0
Beryllium (Be), % 0.00020 to 0.00080
0
Carbon (C), % 0
0 to 0.050
Copper (Cu), % 0 to 0.050
65 to 71.6
Iron (Fe), % 0 to 0.0050
0.4 to 1.0
Lead (Pb), % 0
0 to 0.020
Magnesium (Mg), % 86.1 to 89.8
0
Manganese (Mn), % 0.15 to 1.5
0 to 1.0
Nickel (Ni), % 0 to 0.0050
28 to 33
Phosphorus (P), % 0
0 to 0.2
Silicon (Si), % 0 to 0.050
0
Sulfur (S), % 0
0 to 0.020
Zinc (Zn), % 1.7 to 2.3
0 to 0.5
Residuals, % 0
0 to 0.5