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EN-MC21320 Magnesium vs. C34500 Brass

EN-MC21320 magnesium belongs to the magnesium alloys classification, while C34500 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 C34500 brass.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 45
100
Elongation at Break, % 7.5
12 to 28
Poisson's Ratio 0.29
0.31
Shear Modulus, GPa 18
40
Shear Strength, MPa 130
220 to 260
Tensile Strength: Ultimate (UTS), MPa 230
340 to 430
Tensile Strength: Yield (Proof), MPa 140
120 to 180

Thermal Properties

Latent Heat of Fusion, J/g 370
170
Maximum Temperature: Mechanical, °C 110
120
Melting Completion (Liquidus), °C 600
910
Melting Onset (Solidus), °C 530
890
Specific Heat Capacity, J/kg-K 1000
380
Thermal Conductivity, W/m-K 66
120
Thermal Expansion, µm/m-K 26
21

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 17
26
Electrical Conductivity: Equal Weight (Specific), % IACS 91
29

Otherwise Unclassified Properties

Base Metal Price, % relative 12
24
Density, g/cm3 1.6
8.2
Embodied Carbon, kg CO2/kg material 23
2.6
Embodied Energy, MJ/kg 160
45
Embodied Water, L/kg 980
320

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 15
42 to 75
Resilience: Unit (Modulus of Resilience), kJ/m3 200
69 to 160
Stiffness to Weight: Axial, points 15
7.1
Stiffness to Weight: Bending, points 72
19
Strength to Weight: Axial, points 38
12 to 15
Strength to Weight: Bending, points 50
13 to 16
Thermal Diffusivity, mm2/s 40
37
Thermal Shock Resistance, points 13
11 to 14

Alloy Composition

Aluminum (Al), % 3.5 to 5.0
0
Copper (Cu), % 0 to 0.010
62 to 65
Iron (Fe), % 0 to 0.0050
0 to 0.15
Lead (Pb), % 0
1.5 to 2.5
Magnesium (Mg), % 92.5 to 95.9
0
Manganese (Mn), % 0.1 to 0.7
0
Nickel (Ni), % 0 to 0.0020
0
Silicon (Si), % 0.5 to 1.5
0
Zinc (Zn), % 0 to 0.2
32 to 36.5
Residuals, % 0 to 0.010
0 to 0.4