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CC762S Brass vs. EQ21A Magnesium

CC762S 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 CC762S brass and the bottom bar is EQ21A magnesium.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 210
80
Elastic (Young's, Tensile) Modulus, GPa 110
44
Elongation at Break, % 7.3
2.4
Poisson's Ratio 0.32
0.29
Shear Modulus, GPa 43
17
Tensile Strength: Ultimate (UTS), MPa 840
250
Tensile Strength: Yield (Proof), MPa 540
190

Thermal Properties

Latent Heat of Fusion, J/g 200
340
Maximum Temperature: Mechanical, °C 160
160
Melting Completion (Liquidus), °C 920
640
Melting Onset (Solidus), °C 870
560
Specific Heat Capacity, J/kg-K 420
980
Thermal Conductivity, W/m-K 51
110
Thermal Expansion, µm/m-K 20
27

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 28
25
Electrical Conductivity: Equal Weight (Specific), % IACS 32
120

Otherwise Unclassified Properties

Base Metal Price, % relative 24
80
Density, g/cm3 8.0
1.9
Embodied Carbon, kg CO2/kg material 3.1
27
Embodied Energy, MJ/kg 51
210

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 54
5.6
Resilience: Unit (Modulus of Resilience), kJ/m3 1290
410
Stiffness to Weight: Axial, points 7.8
13
Stiffness to Weight: Bending, points 20
63
Strength to Weight: Axial, points 29
37
Strength to Weight: Bending, points 25
47
Thermal Diffusivity, mm2/s 15
62
Thermal Shock Resistance, points 27
15

Alloy Composition


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Aluminum (Al), % 3.0 to 7.0
0
Antimony (Sb), % 0 to 0.030
0
Copper (Cu), % 57 to 67
0.050 to 0.1
Iron (Fe), % 1.5 to 4.0
0
Lead (Pb), % 0 to 0.2
0
Magnesium (Mg), % 0
93.9 to 96.8
Manganese (Mn), % 2.5 to 5.0
0
Nickel (Ni), % 0 to 3.0
0 to 0.010
Phosphorus (P), % 0 to 0.030
0
Silicon (Si), % 0 to 0.1
0
Silver (Ag), % 0
1.3 to 1.7
Tin (Sn), % 0 to 0.2
0
Unspecified Rare Earths, % 0
1.5 to 3.0
Zinc (Zn), % 13.4 to 36
0
Zirconium (Zr), % 0
0.4 to 1.0
Residuals, % 0
0 to 0.3