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EN-MC21320 Magnesium vs. C66300 Brass

EN-MC21320 magnesium belongs to the magnesium alloys classification, while C66300 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-MC21320 magnesium and the bottom bar is C66300 brass.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 45
110
Elongation at Break, % 7.5
2.3 to 22
Poisson's Ratio 0.29
0.33
Shear Modulus, GPa 18
42
Shear Strength, MPa 130
290 to 470
Tensile Strength: Ultimate (UTS), MPa 230
460 to 810
Tensile Strength: Yield (Proof), MPa 140
400 to 800

Thermal Properties

Latent Heat of Fusion, J/g 370
200
Maximum Temperature: Mechanical, °C 110
180
Melting Completion (Liquidus), °C 600
1050
Melting Onset (Solidus), °C 530
1000
Specific Heat Capacity, J/kg-K 1000
380
Thermal Conductivity, W/m-K 66
110
Thermal Expansion, µm/m-K 26
18

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 17
25
Electrical Conductivity: Equal Weight (Specific), % IACS 91
26

Otherwise Unclassified Properties

Base Metal Price, % relative 12
29
Density, g/cm3 1.6
8.6
Embodied Carbon, kg CO2/kg material 23
2.8
Embodied Energy, MJ/kg 160
46
Embodied Water, L/kg 980
320

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 15
17 to 98
Resilience: Unit (Modulus of Resilience), kJ/m3 200
710 to 2850
Stiffness to Weight: Axial, points 15
7.2
Stiffness to Weight: Bending, points 72
19
Strength to Weight: Axial, points 38
15 to 26
Strength to Weight: Bending, points 50
15 to 22
Thermal Diffusivity, mm2/s 40
32
Thermal Shock Resistance, points 13
16 to 28

Alloy Composition

Aluminum (Al), % 3.5 to 5.0
0
Cobalt (Co), % 0
0 to 0.2
Copper (Cu), % 0 to 0.010
84.5 to 87.5
Iron (Fe), % 0 to 0.0050
1.4 to 2.4
Lead (Pb), % 0
0 to 0.050
Magnesium (Mg), % 92.5 to 95.9
0
Manganese (Mn), % 0.1 to 0.7
0
Nickel (Ni), % 0 to 0.0020
0
Phosphorus (P), % 0
0 to 0.35
Silicon (Si), % 0.5 to 1.5
0
Tin (Sn), % 0
1.5 to 3.0
Zinc (Zn), % 0 to 0.2
6.0 to 12.8
Residuals, % 0 to 0.010
0 to 0.5