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AM50A Magnesium vs. CC761S Brass

AM50A magnesium belongs to the magnesium alloys classification, while CC761S brass belongs to the copper alloys. There are 29 material properties with values for both materials. Properties with values for just one material (2, 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 AM50A magnesium and the bottom bar is CC761S brass.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 58
150
Elastic (Young's, Tensile) Modulus, GPa 45
110
Elongation at Break, % 11
8.7
Poisson's Ratio 0.29
0.33
Shear Modulus, GPa 17
42
Tensile Strength: Ultimate (UTS), MPa 210
540
Tensile Strength: Yield (Proof), MPa 120
340

Thermal Properties

Latent Heat of Fusion, J/g 350
260
Maximum Temperature: Mechanical, °C 120
170
Melting Completion (Liquidus), °C 620
960
Melting Onset (Solidus), °C 570
910
Specific Heat Capacity, J/kg-K 1000
410
Thermal Conductivity, W/m-K 65
27
Thermal Expansion, µm/m-K 26
18

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 16
40
Electrical Conductivity: Equal Weight (Specific), % IACS 88
43

Otherwise Unclassified Properties

Base Metal Price, % relative 12
27
Density, g/cm3 1.7
8.3
Embodied Carbon, kg CO2/kg material 23
2.7
Embodied Energy, MJ/kg 160
45
Embodied Water, L/kg 990
300

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 19
41
Resilience: Unit (Modulus of Resilience), kJ/m3 150
530
Stiffness to Weight: Axial, points 15
7.4
Stiffness to Weight: Bending, points 71
19
Strength to Weight: Axial, points 35
18
Strength to Weight: Bending, points 47
18
Thermal Diffusivity, mm2/s 39
8.0
Thermal Shock Resistance, points 13
19

Alloy Composition

Aluminum (Al), % 4.4 to 5.4
0 to 0.1
Antimony (Sb), % 0
0 to 0.050
Copper (Cu), % 0 to 0.010
78 to 83
Iron (Fe), % 0 to 0.0040
0 to 0.6
Lead (Pb), % 0
0 to 0.8
Magnesium (Mg), % 93.7 to 95.3
0
Manganese (Mn), % 0.26 to 0.6
0 to 0.2
Nickel (Ni), % 0 to 0.0020
0 to 1.0
Phosphorus (P), % 0
0 to 0.030
Silicon (Si), % 0 to 0.1
3.0 to 5.0
Tin (Sn), % 0
0 to 0.3
Zinc (Zn), % 0 to 0.22
8.9 to 19