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ZK40A Magnesium vs. C34500 Brass

ZK40A magnesium belongs to the magnesium alloys classification, while C34500 brass belongs to the copper alloys. There are 29 material properties with values for both materials. Properties with values for just one material (1, 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 ZK40A magnesium and the bottom bar is C34500 brass.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 45
100
Elongation at Break, % 4.2
12 to 28
Poisson's Ratio 0.29
0.31
Shear Modulus, GPa 17
40
Shear Strength, MPa 160
220 to 260
Tensile Strength: Ultimate (UTS), MPa 280
340 to 430
Tensile Strength: Yield (Proof), MPa 260
120 to 180

Thermal Properties

Latent Heat of Fusion, J/g 340
170
Maximum Temperature: Mechanical, °C 120
120
Melting Completion (Liquidus), °C 600
910
Melting Onset (Solidus), °C 540
890
Specific Heat Capacity, J/kg-K 970
380
Thermal Conductivity, W/m-K 110
120
Thermal Expansion, µm/m-K 26
21

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 27
26
Electrical Conductivity: Equal Weight (Specific), % IACS 130
29

Otherwise Unclassified Properties

Base Metal Price, % relative 13
24
Density, g/cm3 1.8
8.2
Embodied Carbon, kg CO2/kg material 24
2.6
Embodied Energy, MJ/kg 160
45
Embodied Water, L/kg 950
320

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 12
42 to 75
Resilience: Unit (Modulus of Resilience), kJ/m3 740
69 to 160
Stiffness to Weight: Axial, points 14
7.1
Stiffness to Weight: Bending, points 65
19
Strength to Weight: Axial, points 43
12 to 15
Strength to Weight: Bending, points 53
13 to 16
Thermal Diffusivity, mm2/s 62
37
Thermal Shock Resistance, points 17
11 to 14

Alloy Composition


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Copper (Cu), % 0
62 to 65
Iron (Fe), % 0
0 to 0.15
Lead (Pb), % 0
1.5 to 2.5
Magnesium (Mg), % 94.2 to 96.1
0
Zinc (Zn), % 3.5 to 4.5
32 to 36.5
Zirconium (Zr), % 0.45 to 1.0
0
Residuals, % 0 to 0.3
0 to 0.4