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EQ21A Magnesium vs. C23000 Brass

EQ21A magnesium belongs to the magnesium alloys classification, while C23000 brass belongs to the copper alloys. There are 28 material properties with values for both materials. Properties with values for just one material (9, 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 EQ21A magnesium and the bottom bar is C23000 brass.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 44
110
Elongation at Break, % 2.4
2.9 to 47
Poisson's Ratio 0.29
0.33
Shear Modulus, GPa 17
42
Shear Strength, MPa 150
220 to 340
Tensile Strength: Ultimate (UTS), MPa 250
280 to 590
Tensile Strength: Yield (Proof), MPa 190
83 to 480

Thermal Properties

Latent Heat of Fusion, J/g 340
190
Maximum Temperature: Mechanical, °C 160
170
Melting Completion (Liquidus), °C 640
1030
Melting Onset (Solidus), °C 560
990
Specific Heat Capacity, J/kg-K 980
390
Thermal Conductivity, W/m-K 110
160
Thermal Expansion, µm/m-K 27
19

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 25
37
Electrical Conductivity: Equal Weight (Specific), % IACS 120
39

Otherwise Unclassified Properties

Base Metal Price, % relative 80
28
Density, g/cm3 1.9
8.6
Embodied Carbon, kg CO2/kg material 27
2.6
Embodied Energy, MJ/kg 210
43

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 5.6
6.2 to 260
Resilience: Unit (Modulus of Resilience), kJ/m3 410
31 to 1040
Stiffness to Weight: Axial, points 13
7.2
Stiffness to Weight: Bending, points 63
19
Strength to Weight: Axial, points 37
8.9 to 19
Strength to Weight: Bending, points 47
11 to 18
Thermal Diffusivity, mm2/s 62
48
Thermal Shock Resistance, points 15
9.4 to 20

Alloy Composition

Copper (Cu), % 0.050 to 0.1
84 to 86
Iron (Fe), % 0
0 to 0.050
Lead (Pb), % 0
0 to 0.050
Magnesium (Mg), % 93.9 to 96.8
0
Nickel (Ni), % 0 to 0.010
0
Silver (Ag), % 1.3 to 1.7
0
Unspecified Rare Earths, % 1.5 to 3.0
0
Zinc (Zn), % 0
13.7 to 16
Zirconium (Zr), % 0.4 to 1.0
0
Residuals, % 0
0 to 0.2