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EN-MC65120 Magnesium vs. C38000 Brass

EN-MC65120 magnesium belongs to the magnesium alloys classification, while C38000 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-MC65120 magnesium and the bottom bar is C38000 brass.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 45
100
Elongation at Break, % 3.1
17
Poisson's Ratio 0.29
0.31
Shear Modulus, GPa 17
39
Shear Strength, MPa 92
230
Tensile Strength: Ultimate (UTS), MPa 160
380
Tensile Strength: Yield (Proof), MPa 110
120

Thermal Properties

Latent Heat of Fusion, J/g 330
170
Maximum Temperature: Mechanical, °C 180
110
Melting Completion (Liquidus), °C 590
800
Melting Onset (Solidus), °C 520
760
Specific Heat Capacity, J/kg-K 970
380
Thermal Conductivity, W/m-K 100
110
Thermal Expansion, µm/m-K 26
21

Otherwise Unclassified Properties

Base Metal Price, % relative 25
22
Density, g/cm3 1.9
8.0
Embodied Carbon, kg CO2/kg material 25
2.7
Embodied Energy, MJ/kg 190
46
Embodied Water, L/kg 930
330

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 4.4
50
Resilience: Unit (Modulus of Resilience), kJ/m3 140
74
Stiffness to Weight: Axial, points 13
7.1
Stiffness to Weight: Bending, points 62
19
Strength to Weight: Axial, points 23
13
Strength to Weight: Bending, points 34
14
Thermal Diffusivity, mm2/s 56
37
Thermal Shock Resistance, points 9.8
13

Alloy Composition


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Aluminum (Al), % 0
0 to 0.5
Copper (Cu), % 0 to 0.030
55 to 60
Iron (Fe), % 0 to 0.010
0 to 0.35
Lead (Pb), % 0
1.5 to 2.5
Magnesium (Mg), % 91.8 to 95.1
0
Manganese (Mn), % 0 to 0.15
0
Nickel (Ni), % 0 to 0.0050
0
Silicon (Si), % 0 to 0.010
0
Tin (Sn), % 0
0 to 0.3
Unspecified Rare Earths, % 2.5 to 4.0
0
Zinc (Zn), % 2.0 to 3.0
35.9 to 43.5
Zirconium (Zr), % 0.4 to 1.0
0
Residuals, % 0 to 0.010
0 to 0.5