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EN-MC21320 Magnesium vs. C99750 Brass

EN-MC21320 magnesium belongs to the magnesium alloys classification, while C99750 brass belongs to the copper alloys. There are 27 material properties with values for both materials. Properties with values for just one material (5, 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 EN-MC21320 magnesium and the bottom bar is C99750 brass.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 68
110 to 120
Elastic (Young's, Tensile) Modulus, GPa 45
130
Elongation at Break, % 7.5
20 to 30
Poisson's Ratio 0.29
0.32
Shear Modulus, GPa 18
48
Tensile Strength: Ultimate (UTS), MPa 230
450 to 520
Tensile Strength: Yield (Proof), MPa 140
220 to 280

Thermal Properties

Latent Heat of Fusion, J/g 370
200
Maximum Temperature: Mechanical, °C 110
160
Melting Completion (Liquidus), °C 600
840
Melting Onset (Solidus), °C 530
820
Specific Heat Capacity, J/kg-K 1000
410
Thermal Expansion, µm/m-K 26
20

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 17
2.0
Electrical Conductivity: Equal Weight (Specific), % IACS 91
2.2

Otherwise Unclassified Properties

Base Metal Price, % relative 12
23
Density, g/cm3 1.6
8.1
Embodied Carbon, kg CO2/kg material 23
3.1
Embodied Energy, MJ/kg 160
51
Embodied Water, L/kg 980
310

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 15
87 to 110
Resilience: Unit (Modulus of Resilience), kJ/m3 200
190 to 300
Stiffness to Weight: Axial, points 15
8.6
Stiffness to Weight: Bending, points 72
21
Strength to Weight: Axial, points 38
15 to 18
Strength to Weight: Bending, points 50
16 to 18
Thermal Shock Resistance, points 13
13 to 15

Alloy Composition


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Aluminum (Al), % 3.5 to 5.0
0.25 to 3.0
Copper (Cu), % 0 to 0.010
55 to 61
Iron (Fe), % 0 to 0.0050
0 to 1.0
Lead (Pb), % 0
0.5 to 2.5
Magnesium (Mg), % 92.5 to 95.9
0
Manganese (Mn), % 0.1 to 0.7
17 to 23
Nickel (Ni), % 0 to 0.0020
0 to 5.0
Silicon (Si), % 0.5 to 1.5
0
Zinc (Zn), % 0 to 0.2
17 to 23
Residuals, % 0 to 0.010
0 to 0.3