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AWS BMg-1 vs. CR004A Copper

AWS BMg-1 belongs to the magnesium alloys classification, while CR004A 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 CR004A copper.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 47
120
Elongation at Break, % 3.8
15
Poisson's Ratio 0.29
0.34
Shear Modulus, GPa 18
43
Tensile Strength: Ultimate (UTS), MPa 180
220
Tensile Strength: Yield (Proof), MPa 110
130

Thermal Properties

Latent Heat of Fusion, J/g 350
210
Maximum Temperature: Mechanical, °C 130
200
Melting Completion (Liquidus), °C 600
1090
Melting Onset (Solidus), °C 440
1040
Specific Heat Capacity, J/kg-K 980
390
Thermal Conductivity, W/m-K 76
380
Thermal Expansion, µm/m-K 26
17

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 11
100
Electrical Conductivity: Equal Weight (Specific), % IACS 55
100

Otherwise Unclassified Properties

Base Metal Price, % relative 12
31
Density, g/cm3 1.8
9.0
Embodied Carbon, kg CO2/kg material 22
2.6
Embodied Energy, MJ/kg 160
41
Embodied Water, L/kg 980
320

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 5.9
29
Resilience: Unit (Modulus of Resilience), kJ/m3 120
76
Stiffness to Weight: Axial, points 14
7.2
Stiffness to Weight: Bending, points 66
18
Strength to Weight: Axial, points 27
6.8
Strength to Weight: Bending, points 39
9.0
Thermal Diffusivity, mm2/s 43
110
Thermal Shock Resistance, points 10
7.8

Alloy Composition


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Aluminum (Al), % 8.3 to 9.7
0
Beryllium (Be), % 0.00020 to 0.00080
0
Bismuth (Bi), % 0
0 to 0.00050
Copper (Cu), % 0 to 0.050
99.9 to 100
Iron (Fe), % 0 to 0.0050
0
Lead (Pb), % 0
0 to 0.0050
Magnesium (Mg), % 86.1 to 89.8
0
Manganese (Mn), % 0.15 to 1.5
0
Nickel (Ni), % 0 to 0.0050
0
Oxygen (O), % 0
0 to 0.040
Silicon (Si), % 0 to 0.050
0
Silver (Ag), % 0
0 to 0.015
Zinc (Zn), % 1.7 to 2.3
0
Residuals, % 0 to 0.3
0