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EN-MC21230 Magnesium vs. C47940 Brass

EN-MC21230 magnesium belongs to the magnesium alloys classification, while C47940 brass belongs to the copper alloys. There are 27 material properties with values for both materials. Properties with values for just one material (4, 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-MC21230 magnesium and the bottom bar is C47940 brass.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 45
100
Elongation at Break, % 10
14 to 34
Poisson's Ratio 0.29
0.31
Shear Modulus, GPa 18
40
Shear Strength, MPa 130
250 to 310
Tensile Strength: Ultimate (UTS), MPa 220
380 to 520
Tensile Strength: Yield (Proof), MPa 140
160 to 390

Thermal Properties

Latent Heat of Fusion, J/g 350
170
Maximum Temperature: Mechanical, °C 120
130
Melting Completion (Liquidus), °C 600
850
Melting Onset (Solidus), °C 520
800
Specific Heat Capacity, J/kg-K 1000
380
Thermal Conductivity, W/m-K 72
110
Thermal Expansion, µm/m-K 27
20

Otherwise Unclassified Properties

Base Metal Price, % relative 12
25
Density, g/cm3 1.7
8.2
Embodied Carbon, kg CO2/kg material 23
2.8
Embodied Energy, MJ/kg 160
47
Embodied Water, L/kg 990
330

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 19
68 to 100
Resilience: Unit (Modulus of Resilience), kJ/m3 200
120 to 740
Stiffness to Weight: Axial, points 15
7.1
Stiffness to Weight: Bending, points 71
19
Strength to Weight: Axial, points 36
13 to 17
Strength to Weight: Bending, points 48
14 to 17
Thermal Diffusivity, mm2/s 43
36
Thermal Shock Resistance, points 13
13 to 17

Alloy Composition

Aluminum (Al), % 5.5 to 8.5
0
Copper (Cu), % 0 to 0.010
63 to 66
Iron (Fe), % 0 to 0.0050
0.1 to 1.0
Lead (Pb), % 0
1.0 to 2.0
Magnesium (Mg), % 90.5 to 94.4
0
Manganese (Mn), % 0.1 to 0.6
0
Nickel (Ni), % 0 to 0.0020
0.1 to 0.5
Silicon (Si), % 0 to 0.1
0
Tin (Sn), % 0
1.2 to 2.0
Zinc (Zn), % 0 to 0.3
28.1 to 34.6
Residuals, % 0 to 0.010
0 to 0.4