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EV31A Magnesium vs. C67400 Bronze

EV31A magnesium belongs to the magnesium alloys classification, while C67400 bronze belongs to the copper alloys. There are 23 material properties with values for both materials. Properties with values for just one material (11, 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 EV31A magnesium and the bottom bar is C67400 bronze.

EV31A (EV31A-T6, M12310) MagnesiumUNS C67400 Manganese-Aluminum Bronze
Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 44
110
Elongation at Break, % 3.5
22 to 28
Poisson's Ratio 0.27
0.31
Shear Modulus, GPa 17
41
Shear Strength, MPa 170
310 to 350
Tensile Strength: Ultimate (UTS), MPa 260
480 to 610
Tensile Strength: Yield (Proof), MPa 170
250 to 370

Thermal Properties

Maximum Temperature: Mechanical, °C 200
130
Melting Onset (Solidus), °C 590
870
Specific Heat Capacity, J/kg-K 1000
400
Thermal Conductivity, W/m-K 86
100
Thermal Expansion, µm/m-K 27
21

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 18
23
Electrical Conductivity: Equal Weight (Specific), % IACS 90
26

Otherwise Unclassified Properties

Density, g/cm3 1.8
7.9

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 8.1
110 to 120
Resilience: Unit (Modulus of Resilience), kJ/m3 330
300 to 660
Stiffness to Weight: Axial, points 13
7.5
Stiffness to Weight: Bending, points 65
20
Strength to Weight: Axial, points 40
17 to 22
Strength to Weight: Bending, points 50
17 to 20
Thermal Diffusivity, mm2/s 47
32
Thermal Shock Resistance, points 16
16 to 20