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EN-MC21220 Magnesium vs. C84100 Brass

EN-MC21220 magnesium belongs to the magnesium alloys classification, while C84100 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 EN-MC21220 magnesium and the bottom bar is C84100 brass.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 58
65
Elastic (Young's, Tensile) Modulus, GPa 45
110
Elongation at Break, % 11
13
Poisson's Ratio 0.29
0.33
Shear Modulus, GPa 17
39
Tensile Strength: Ultimate (UTS), MPa 210
230
Tensile Strength: Yield (Proof), MPa 120
81

Thermal Properties

Latent Heat of Fusion, J/g 350
190
Maximum Temperature: Mechanical, °C 120
160
Melting Completion (Liquidus), °C 600
1000
Melting Onset (Solidus), °C 540
810
Specific Heat Capacity, J/kg-K 1000
380
Thermal Conductivity, W/m-K 65
110
Thermal Expansion, µm/m-K 27
19

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 16
23
Electrical Conductivity: Equal Weight (Specific), % IACS 87
25

Otherwise Unclassified Properties

Base Metal Price, % relative 12
29
Density, g/cm3 1.7
8.5
Embodied Carbon, kg CO2/kg material 23
2.9
Embodied Energy, MJ/kg 160
48
Embodied Water, L/kg 990
340

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 20
24
Resilience: Unit (Modulus of Resilience), kJ/m3 160
30
Stiffness to Weight: Axial, points 15
7.1
Stiffness to Weight: Bending, points 71
19
Strength to Weight: Axial, points 34
7.4
Strength to Weight: Bending, points 46
9.7
Thermal Diffusivity, mm2/s 39
33
Thermal Shock Resistance, points 12
7.8

Alloy Composition


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Aluminum (Al), % 4.4 to 5.5
0 to 0.010
Antimony (Sb), % 0
0 to 0.050
Bismuth (Bi), % 0
0 to 0.090
Copper (Cu), % 0 to 0.010
78 to 85
Iron (Fe), % 0 to 0.0050
0 to 0.3
Lead (Pb), % 0
0.050 to 0.25
Magnesium (Mg), % 93.5 to 95.5
0
Manganese (Mn), % 0.1 to 0.6
0
Nickel (Ni), % 0 to 0.0020
0 to 0.5
Phosphorus (P), % 0
0 to 0.050
Silicon (Si), % 0 to 0.1
0 to 0.010
Tin (Sn), % 0
1.5 to 4.5
Zinc (Zn), % 0 to 0.3
12 to 20
Residuals, % 0 to 0.010
0 to 0.5