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CC761S Brass vs. EQ21A Magnesium

CC761S 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 CC761S brass and the bottom bar is EQ21A magnesium.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 150
80
Elastic (Young's, Tensile) Modulus, GPa 110
44
Elongation at Break, % 8.7
2.4
Poisson's Ratio 0.33
0.29
Shear Modulus, GPa 42
17
Tensile Strength: Ultimate (UTS), MPa 540
250
Tensile Strength: Yield (Proof), MPa 340
190

Thermal Properties

Latent Heat of Fusion, J/g 260
340
Maximum Temperature: Mechanical, °C 170
160
Melting Completion (Liquidus), °C 960
640
Melting Onset (Solidus), °C 910
560
Specific Heat Capacity, J/kg-K 410
980
Thermal Conductivity, W/m-K 27
110
Thermal Expansion, µm/m-K 18
27

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 40
25
Electrical Conductivity: Equal Weight (Specific), % IACS 43
120

Otherwise Unclassified Properties

Base Metal Price, % relative 27
80
Density, g/cm3 8.3
1.9
Embodied Carbon, kg CO2/kg material 2.7
27
Embodied Energy, MJ/kg 45
210

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 41
5.6
Resilience: Unit (Modulus of Resilience), kJ/m3 530
410
Stiffness to Weight: Axial, points 7.4
13
Stiffness to Weight: Bending, points 19
63
Strength to Weight: Axial, points 18
37
Strength to Weight: Bending, points 18
47
Thermal Diffusivity, mm2/s 8.0
62
Thermal Shock Resistance, points 19
15

Alloy Composition

Aluminum (Al), % 0 to 0.1
0
Antimony (Sb), % 0 to 0.050
0
Copper (Cu), % 78 to 83
0.050 to 0.1
Iron (Fe), % 0 to 0.6
0
Lead (Pb), % 0 to 0.8
0
Magnesium (Mg), % 0
93.9 to 96.8
Manganese (Mn), % 0 to 0.2
0
Nickel (Ni), % 0 to 1.0
0 to 0.010
Phosphorus (P), % 0 to 0.030
0
Silicon (Si), % 3.0 to 5.0
0
Silver (Ag), % 0
1.3 to 1.7
Tin (Sn), % 0 to 0.3
0
Unspecified Rare Earths, % 0
1.5 to 3.0
Zinc (Zn), % 8.9 to 19
0
Zirconium (Zr), % 0
0.4 to 1.0
Residuals, % 0
0 to 0.3