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AS41B Magnesium vs. C21000 Brass

AS41B magnesium belongs to the magnesium alloys classification, while C21000 brass belongs to the copper alloys. There are 29 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 AS41B magnesium and the bottom bar is C21000 brass.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 45
110
Elongation at Break, % 6.0
2.9 to 50
Poisson's Ratio 0.29
0.34
Shear Modulus, GPa 18
43
Shear Strength, MPa 120
180 to 280
Tensile Strength: Ultimate (UTS), MPa 210
240 to 450
Tensile Strength: Yield (Proof), MPa 140
69 to 440

Thermal Properties

Latent Heat of Fusion, J/g 370
200
Maximum Temperature: Mechanical, °C 110
190
Melting Completion (Liquidus), °C 620
1070
Melting Onset (Solidus), °C 570
1050
Specific Heat Capacity, J/kg-K 1000
390
Thermal Conductivity, W/m-K 68
230
Thermal Expansion, µm/m-K 26
18

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 17
56
Electrical Conductivity: Equal Weight (Specific), % IACS 92
57

Otherwise Unclassified Properties

Base Metal Price, % relative 12
30
Density, g/cm3 1.7
8.8
Embodied Carbon, kg CO2/kg material 23
2.6
Embodied Energy, MJ/kg 160
42
Embodied Water, L/kg 980
310

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 11
13 to 100
Resilience: Unit (Modulus of Resilience), kJ/m3 220
21 to 830
Stiffness to Weight: Axial, points 15
7.2
Stiffness to Weight: Bending, points 72
18
Strength to Weight: Axial, points 35
7.4 to 14
Strength to Weight: Bending, points 47
9.6 to 15
Thermal Diffusivity, mm2/s 41
69
Thermal Shock Resistance, points 13
8.1 to 15

Alloy Composition


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Aluminum (Al), % 3.5 to 5.0
0
Copper (Cu), % 0 to 0.020
94 to 96
Iron (Fe), % 0 to 0.0035
0 to 0.050
Lead (Pb), % 0
0 to 0.030
Magnesium (Mg), % 92.7 to 95.7
0
Manganese (Mn), % 0.35 to 0.7
0
Nickel (Ni), % 0 to 0.0020
0
Silicon (Si), % 0.5 to 1.5
0
Zinc (Zn), % 0 to 0.12
3.7 to 6.0
Residuals, % 0
0 to 0.2