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EN-MC65120 Magnesium vs. C85400 Brass

EN-MC65120 magnesium belongs to the magnesium alloys classification, while C85400 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-MC65120 magnesium and the bottom bar is C85400 brass.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 55
55
Elastic (Young's, Tensile) Modulus, GPa 45
100
Elongation at Break, % 3.1
23
Poisson's Ratio 0.29
0.32
Shear Modulus, GPa 17
40
Tensile Strength: Ultimate (UTS), MPa 160
220
Tensile Strength: Yield (Proof), MPa 110
85

Thermal Properties

Latent Heat of Fusion, J/g 330
180
Maximum Temperature: Mechanical, °C 180
130
Melting Completion (Liquidus), °C 590
940
Melting Onset (Solidus), °C 520
940
Specific Heat Capacity, J/kg-K 970
380
Thermal Conductivity, W/m-K 100
89
Thermal Expansion, µm/m-K 26
20

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 25
20
Electrical Conductivity: Equal Weight (Specific), % IACS 120
22

Otherwise Unclassified Properties

Base Metal Price, % relative 25
25
Density, g/cm3 1.9
8.3
Embodied Carbon, kg CO2/kg material 25
2.8
Embodied Energy, MJ/kg 190
46
Embodied Water, L/kg 930
330

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 4.4
40
Resilience: Unit (Modulus of Resilience), kJ/m3 140
35
Stiffness to Weight: Axial, points 13
7.0
Stiffness to Weight: Bending, points 62
19
Strength to Weight: Axial, points 23
7.5
Strength to Weight: Bending, points 34
9.9
Thermal Diffusivity, mm2/s 56
28
Thermal Shock Resistance, points 9.8
7.6

Alloy Composition

Aluminum (Al), % 0
0 to 0.35
Copper (Cu), % 0 to 0.030
65 to 70
Iron (Fe), % 0 to 0.010
0 to 0.7
Lead (Pb), % 0
1.5 to 3.8
Magnesium (Mg), % 91.8 to 95.1
0
Manganese (Mn), % 0 to 0.15
0
Nickel (Ni), % 0 to 0.0050
0 to 1.0
Silicon (Si), % 0 to 0.010
0 to 0.050
Tin (Sn), % 0
0.5 to 1.5
Unspecified Rare Earths, % 2.5 to 4.0
0
Zinc (Zn), % 2.0 to 3.0
24 to 32
Zirconium (Zr), % 0.4 to 1.0
0
Residuals, % 0 to 0.010
0 to 1.1