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AWS BMg-1 vs. 7049A Aluminum

AWS BMg-1 belongs to the magnesium alloys classification, while 7049A 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 7049A aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 47
71
Elongation at Break, % 3.8
5.0 to 5.7
Fatigue Strength, MPa 72
180
Poisson's Ratio 0.29
0.32
Shear Modulus, GPa 18
27
Shear Strength, MPa 100
340 to 350
Tensile Strength: Ultimate (UTS), MPa 180
580 to 590
Tensile Strength: Yield (Proof), MPa 110
500 to 530

Thermal Properties

Latent Heat of Fusion, J/g 350
370
Maximum Temperature: Mechanical, °C 130
200
Melting Completion (Liquidus), °C 600
640
Melting Onset (Solidus), °C 440
430
Specific Heat Capacity, J/kg-K 980
850
Thermal Conductivity, W/m-K 76
130
Thermal Expansion, µm/m-K 26
24

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 11
40
Electrical Conductivity: Equal Weight (Specific), % IACS 55
120

Otherwise Unclassified Properties

Base Metal Price, % relative 12
10
Density, g/cm3 1.8
3.1
Embodied Carbon, kg CO2/kg material 22
8.2
Embodied Energy, MJ/kg 160
150
Embodied Water, L/kg 980
1100

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 5.9
28 to 32
Resilience: Unit (Modulus of Resilience), kJ/m3 120
1800 to 1990
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 66
44
Strength to Weight: Axial, points 27
52 to 53
Strength to Weight: Bending, points 39
50 to 51
Thermal Diffusivity, mm2/s 43
50
Thermal Shock Resistance, points 10
25

Alloy Composition

Aluminum (Al), % 8.3 to 9.7
84.6 to 89.5
Beryllium (Be), % 0.00020 to 0.00080
0
Chromium (Cr), % 0
0.050 to 0.25
Copper (Cu), % 0 to 0.050
1.2 to 1.9
Iron (Fe), % 0 to 0.0050
0 to 0.5
Magnesium (Mg), % 86.1 to 89.8
2.1 to 3.1
Manganese (Mn), % 0.15 to 1.5
0 to 0.5
Nickel (Ni), % 0 to 0.0050
0
Silicon (Si), % 0 to 0.050
0 to 0.4
Titanium (Ti), % 0
0 to 0.25
Zinc (Zn), % 1.7 to 2.3
7.2 to 8.4
Zirconium (Zr), % 0
0 to 0.25
Residuals, % 0
0 to 0.15