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EV31A Magnesium vs. C91700 Bronze

EV31A magnesium belongs to the magnesium alloys classification, while C91700 bronze belongs to the copper alloys. There are 23 material properties with values for both materials. Properties with values for just one material (10, 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 C91700 bronze.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 70
90
Elastic (Young's, Tensile) Modulus, GPa 44
110
Elongation at Break, % 3.5
13
Poisson's Ratio 0.27
0.34
Shear Modulus, GPa 17
41
Tensile Strength: Ultimate (UTS), MPa 260
330
Tensile Strength: Yield (Proof), MPa 170
170

Thermal Properties

Maximum Temperature: Mechanical, °C 200
170
Melting Onset (Solidus), °C 590
850
Specific Heat Capacity, J/kg-K 1000
370
Thermal Conductivity, W/m-K 86
71
Thermal Expansion, µm/m-K 27
18

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 18
10
Electrical Conductivity: Equal Weight (Specific), % IACS 90
10

Otherwise Unclassified Properties

Density, g/cm3 1.8
8.7

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 8.1
35
Resilience: Unit (Modulus of Resilience), kJ/m3 330
140
Stiffness to Weight: Axial, points 13
6.9
Stiffness to Weight: Bending, points 65
18
Strength to Weight: Axial, points 40
11
Strength to Weight: Bending, points 50
12
Thermal Diffusivity, mm2/s 47
22
Thermal Shock Resistance, points 16
12