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AWS BMg-1 vs. 7475 Aluminum

AWS BMg-1 belongs to the magnesium alloys classification, while 7475 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 7475 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 47
70
Elongation at Break, % 3.8
10 to 12
Fatigue Strength, MPa 72
190 to 210
Poisson's Ratio 0.29
0.32
Shear Modulus, GPa 18
26
Shear Strength, MPa 100
320 to 350
Tensile Strength: Ultimate (UTS), MPa 180
530 to 590
Tensile Strength: Yield (Proof), MPa 110
440 to 520

Thermal Properties

Latent Heat of Fusion, J/g 350
380
Maximum Temperature: Mechanical, °C 130
180
Melting Completion (Liquidus), °C 600
640
Melting Onset (Solidus), °C 440
480
Specific Heat Capacity, J/kg-K 980
870
Thermal Conductivity, W/m-K 76
140 to 160
Thermal Expansion, µm/m-K 26
23

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 11
33 to 42
Electrical Conductivity: Equal Weight (Specific), % IACS 55
98 to 120

Otherwise Unclassified Properties

Base Metal Price, % relative 12
10
Density, g/cm3 1.8
3.0
Embodied Carbon, kg CO2/kg material 22
8.2
Embodied Energy, MJ/kg 160
150
Embodied Water, L/kg 980
1130

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 5.9
53 to 68
Resilience: Unit (Modulus of Resilience), kJ/m3 120
1390 to 1920
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 66
46
Strength to Weight: Axial, points 27
49 to 55
Strength to Weight: Bending, points 39
48 to 52
Thermal Diffusivity, mm2/s 43
53 to 63
Thermal Shock Resistance, points 10
23 to 26

Alloy Composition


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Aluminum (Al), % 8.3 to 9.7
88.6 to 91.6
Beryllium (Be), % 0.00020 to 0.00080
0
Chromium (Cr), % 0
0.18 to 0.25
Copper (Cu), % 0 to 0.050
1.2 to 1.9
Iron (Fe), % 0 to 0.0050
0 to 0.12
Magnesium (Mg), % 86.1 to 89.8
1.9 to 2.6
Manganese (Mn), % 0.15 to 1.5
0 to 0.060
Nickel (Ni), % 0 to 0.0050
0
Silicon (Si), % 0 to 0.050
0 to 0.1
Titanium (Ti), % 0
0 to 0.060
Zinc (Zn), % 1.7 to 2.3
5.1 to 6.2
Residuals, % 0 to 0.3
0 to 0.15