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AWS BMg-1 vs. 7204 Aluminum

AWS BMg-1 belongs to the magnesium alloys classification, while 7204 aluminum belongs to the aluminum alloys. There are 30 material properties with values for both materials. Properties with values for just one material (1, in this case) are not shown.

For each property being compared, the top bar is AWS BMg-1 and the bottom bar is 7204 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 47
70
Elongation at Break, % 3.8
11 to 13
Fatigue Strength, MPa 72
110 to 130
Poisson's Ratio 0.29
0.33
Shear Modulus, GPa 18
26
Shear Strength, MPa 100
130 to 220
Tensile Strength: Ultimate (UTS), MPa 180
220 to 380
Tensile Strength: Yield (Proof), MPa 110
120 to 310

Thermal Properties

Latent Heat of Fusion, J/g 350
380
Maximum Temperature: Mechanical, °C 130
210
Melting Completion (Liquidus), °C 600
640
Melting Onset (Solidus), °C 440
520
Specific Heat Capacity, J/kg-K 980
880
Thermal Conductivity, W/m-K 76
150
Thermal Expansion, µm/m-K 26
24

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 11
39
Electrical Conductivity: Equal Weight (Specific), % IACS 55
120

Otherwise Unclassified Properties

Base Metal Price, % relative 12
9.5
Density, g/cm3 1.8
2.9
Embodied Carbon, kg CO2/kg material 22
8.4
Embodied Energy, MJ/kg 160
150
Embodied Water, L/kg 980
1140

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 5.9
25 to 40
Resilience: Unit (Modulus of Resilience), kJ/m3 120
110 to 710
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 66
47
Strength to Weight: Axial, points 27
21 to 36
Strength to Weight: Bending, points 39
28 to 40
Thermal Diffusivity, mm2/s 43
58
Thermal Shock Resistance, points 10
9.4 to 16

Alloy Composition

Aluminum (Al), % 8.3 to 9.7
90.5 to 94.8
Beryllium (Be), % 0.00020 to 0.00080
0
Chromium (Cr), % 0
0 to 0.3
Copper (Cu), % 0 to 0.050
0 to 0.2
Iron (Fe), % 0 to 0.0050
0 to 0.35
Magnesium (Mg), % 86.1 to 89.8
1.0 to 2.0
Manganese (Mn), % 0.15 to 1.5
0.2 to 0.7
Nickel (Ni), % 0 to 0.0050
0
Silicon (Si), % 0 to 0.050
0 to 0.3
Titanium (Ti), % 0
0 to 0.2
Vanadium (V), % 0
0 to 0.1
Zinc (Zn), % 1.7 to 2.3
4.0 to 5.0
Zirconium (Zr), % 0
0 to 0.25
Residuals, % 0
0 to 0.15