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AZ63A Magnesium vs. C68100 Brass

AZ63A magnesium belongs to the magnesium alloys classification, while C68100 brass belongs to the copper alloys. There are 28 material properties with values for both materials. Properties with values for just one material (4, 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 AZ63A magnesium and the bottom bar is C68100 brass.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 46
100
Elongation at Break, % 2.2 to 8.0
29
Poisson's Ratio 0.29
0.3
Shear Modulus, GPa 18
40
Tensile Strength: Ultimate (UTS), MPa 190 to 270
380
Tensile Strength: Yield (Proof), MPa 81 to 120
140

Thermal Properties

Latent Heat of Fusion, J/g 350
170
Maximum Temperature: Mechanical, °C 120
120
Melting Completion (Liquidus), °C 610
890
Melting Onset (Solidus), °C 450
870
Specific Heat Capacity, J/kg-K 980
390
Thermal Conductivity, W/m-K 52 to 65
98
Thermal Expansion, µm/m-K 26
21

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 12 to 15
24
Electrical Conductivity: Equal Weight (Specific), % IACS 59 to 74
27

Otherwise Unclassified Properties

Base Metal Price, % relative 12
23
Density, g/cm3 1.8
7.9
Embodied Carbon, kg CO2/kg material 22
2.8
Embodied Energy, MJ/kg 150
47
Embodied Water, L/kg 970
330

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 3.7 to 16
86
Resilience: Unit (Modulus of Resilience), kJ/m3 71 to 160
94
Stiffness to Weight: Axial, points 14
7.3
Stiffness to Weight: Bending, points 66
20
Strength to Weight: Axial, points 29 to 41
13
Strength to Weight: Bending, points 40 to 51
15
Thermal Diffusivity, mm2/s 29 to 37
32
Thermal Shock Resistance, points 11 to 16
13

Alloy Composition

Aluminum (Al), % 5.3 to 6.7
0 to 0.010
Copper (Cu), % 0 to 0.25
56 to 60
Iron (Fe), % 0
0.25 to 1.3
Lead (Pb), % 0
0 to 0.050
Magnesium (Mg), % 88.6 to 92.1
0
Manganese (Mn), % 0.15 to 0.35
0.010 to 0.5
Nickel (Ni), % 0 to 0.010
0
Silicon (Si), % 0 to 0.3
0.040 to 0.15
Tin (Sn), % 0
0.75 to 1.1
Zinc (Zn), % 2.5 to 3.5
36.4 to 43
Residuals, % 0
0 to 0.5