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AWS BMg-1 vs. C71500 Copper-nickel

AWS BMg-1 belongs to the magnesium alloys classification, while C71500 copper-nickel belongs to the copper alloys. There are 24 material properties with values for both materials. Properties with values for just one material (9, 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 C71500 copper-nickel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 47
140
Poisson's Ratio 0.29
0.33
Shear Modulus, GPa 18
52
Tensile Strength: Ultimate (UTS), MPa 180
380 to 620

Thermal Properties

Latent Heat of Fusion, J/g 350
230
Maximum Temperature: Mechanical, °C 130
260
Melting Completion (Liquidus), °C 600
1240
Melting Onset (Solidus), °C 440
1170
Specific Heat Capacity, J/kg-K 980
400
Thermal Conductivity, W/m-K 76
28
Thermal Expansion, µm/m-K 26
16

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 11
4.6
Electrical Conductivity: Equal Weight (Specific), % IACS 55
4.7

Otherwise Unclassified Properties

Base Metal Price, % relative 12
41
Density, g/cm3 1.8
8.9
Embodied Carbon, kg CO2/kg material 22
5.1
Embodied Energy, MJ/kg 160
74
Embodied Water, L/kg 980
280

Common Calculations

Stiffness to Weight: Axial, points 14
8.6
Stiffness to Weight: Bending, points 66
19
Strength to Weight: Axial, points 27
12 to 19
Strength to Weight: Bending, points 39
13 to 18
Thermal Diffusivity, mm2/s 43
7.7
Thermal Shock Resistance, points 10
12 to 20

Alloy Composition

Aluminum (Al), % 8.3 to 9.7
0
Beryllium (Be), % 0.00020 to 0.00080
0
Copper (Cu), % 0 to 0.050
63.5 to 70.6
Iron (Fe), % 0 to 0.0050
0.4 to 1.0
Lead (Pb), % 0
0 to 0.050
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
29 to 33
Silicon (Si), % 0 to 0.050
0
Zinc (Zn), % 1.7 to 2.3
0 to 1.0
Residuals, % 0
0 to 0.5