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CC766S Brass vs. EQ21A Magnesium

CC766S brass belongs to the copper alloys classification, while EQ21A magnesium belongs to the magnesium alloys. There are 28 material properties with values for both materials. Properties with values for just one material (6, 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 CC766S brass and the bottom bar is EQ21A magnesium.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 120
80
Elastic (Young's, Tensile) Modulus, GPa 110
44
Elongation at Break, % 28
2.4
Poisson's Ratio 0.31
0.29
Shear Modulus, GPa 40
17
Tensile Strength: Ultimate (UTS), MPa 500
250
Tensile Strength: Yield (Proof), MPa 190
190

Thermal Properties

Latent Heat of Fusion, J/g 180
340
Maximum Temperature: Mechanical, °C 130
160
Melting Completion (Liquidus), °C 840
640
Melting Onset (Solidus), °C 800
560
Specific Heat Capacity, J/kg-K 390
980
Thermal Conductivity, W/m-K 89
110
Thermal Expansion, µm/m-K 20
27

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 32
25
Electrical Conductivity: Equal Weight (Specific), % IACS 36
120

Otherwise Unclassified Properties

Base Metal Price, % relative 24
80
Density, g/cm3 8.0
1.9
Embodied Carbon, kg CO2/kg material 2.8
27
Embodied Energy, MJ/kg 48
210

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 110
5.6
Resilience: Unit (Modulus of Resilience), kJ/m3 180
410
Stiffness to Weight: Axial, points 7.3
13
Stiffness to Weight: Bending, points 20
63
Strength to Weight: Axial, points 17
37
Strength to Weight: Bending, points 18
47
Thermal Diffusivity, mm2/s 28
62
Thermal Shock Resistance, points 17
15

Alloy Composition

Aluminum (Al), % 0.3 to 1.8
0
Antimony (Sb), % 0 to 0.1
0
Copper (Cu), % 58 to 64
0.050 to 0.1
Iron (Fe), % 0 to 0.5
0
Lead (Pb), % 0 to 0.5
0
Magnesium (Mg), % 0
93.9 to 96.8
Manganese (Mn), % 0 to 0.5
0
Nickel (Ni), % 0 to 2.0
0 to 0.010
Silicon (Si), % 0 to 0.6
0
Silver (Ag), % 0
1.3 to 1.7
Tin (Sn), % 0 to 0.5
0
Unspecified Rare Earths, % 0
1.5 to 3.0
Zinc (Zn), % 29.5 to 41.7
0
Zirconium (Zr), % 0
0.4 to 1.0
Residuals, % 0
0 to 0.3