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AS41B Magnesium vs. C66900 Brass

AS41B magnesium belongs to the magnesium alloys classification, while C66900 brass belongs to the copper alloys. There are 27 material properties with values for both materials. Properties with values for just one material (5, 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 AS41B magnesium and the bottom bar is C66900 brass.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 45
120
Elongation at Break, % 6.0
1.1 to 26
Poisson's Ratio 0.29
0.32
Shear Modulus, GPa 18
45
Shear Strength, MPa 120
290 to 440
Tensile Strength: Ultimate (UTS), MPa 210
460 to 770
Tensile Strength: Yield (Proof), MPa 140
330 to 760

Thermal Properties

Latent Heat of Fusion, J/g 370
190
Maximum Temperature: Mechanical, °C 110
150
Melting Completion (Liquidus), °C 620
860
Melting Onset (Solidus), °C 570
850
Specific Heat Capacity, J/kg-K 1000
400
Thermal Expansion, µm/m-K 26
20

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 17
3.4
Electrical Conductivity: Equal Weight (Specific), % IACS 92
3.8

Otherwise Unclassified Properties

Base Metal Price, % relative 12
23
Density, g/cm3 1.7
8.2
Embodied Carbon, kg CO2/kg material 23
2.8
Embodied Energy, MJ/kg 160
46
Embodied Water, L/kg 980
310

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 11
4.6 to 200
Resilience: Unit (Modulus of Resilience), kJ/m3 220
460 to 2450
Stiffness to Weight: Axial, points 15
8.1
Stiffness to Weight: Bending, points 72
20
Strength to Weight: Axial, points 35
15 to 26
Strength to Weight: Bending, points 47
16 to 23
Thermal Shock Resistance, points 13
14 to 23

Alloy Composition


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Aluminum (Al), % 3.5 to 5.0
0
Copper (Cu), % 0 to 0.020
62.5 to 64.5
Iron (Fe), % 0 to 0.0035
0 to 0.25
Lead (Pb), % 0
0 to 0.050
Magnesium (Mg), % 92.7 to 95.7
0
Manganese (Mn), % 0.35 to 0.7
11.5 to 12.5
Nickel (Ni), % 0 to 0.0020
0
Silicon (Si), % 0.5 to 1.5
0
Zinc (Zn), % 0 to 0.12
22.5 to 26
Residuals, % 0
0 to 0.2