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C34200 Brass vs. ZK51A Magnesium

C34200 brass belongs to the copper alloys classification, while ZK51A magnesium belongs to the magnesium alloys. There are 29 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 C34200 brass and the bottom bar is ZK51A magnesium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 100
45
Elongation at Break, % 3.0 to 17
4.7
Poisson's Ratio 0.31
0.29
Shear Modulus, GPa 40
18
Shear Strength, MPa 230 to 360
160
Tensile Strength: Ultimate (UTS), MPa 370 to 650
240
Tensile Strength: Yield (Proof), MPa 150 to 420
150

Thermal Properties

Latent Heat of Fusion, J/g 170
340
Maximum Temperature: Mechanical, °C 120
120
Melting Completion (Liquidus), °C 910
640
Melting Onset (Solidus), °C 890
550
Specific Heat Capacity, J/kg-K 380
970
Thermal Conductivity, W/m-K 120
110
Thermal Expansion, µm/m-K 21
26

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 26
28
Electrical Conductivity: Equal Weight (Specific), % IACS 29
140

Otherwise Unclassified Properties

Base Metal Price, % relative 24
13
Density, g/cm3 8.2
1.8
Embodied Carbon, kg CO2/kg material 2.6
24
Embodied Energy, MJ/kg 45
160
Embodied Water, L/kg 320
940

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 9.0 to 98
10
Resilience: Unit (Modulus of Resilience), kJ/m3 110 to 870
260
Stiffness to Weight: Axial, points 7.1
14
Stiffness to Weight: Bending, points 19
64
Strength to Weight: Axial, points 13 to 22
36
Strength to Weight: Bending, points 14 to 20
47
Thermal Diffusivity, mm2/s 37
61
Thermal Shock Resistance, points 12 to 22
15

Alloy Composition

Copper (Cu), % 62 to 65
0 to 0.1
Iron (Fe), % 0 to 0.1
0
Lead (Pb), % 1.5 to 2.5
0
Magnesium (Mg), % 0
93.1 to 95.9
Nickel (Ni), % 0
0 to 0.010
Zinc (Zn), % 32 to 36.5
3.6 to 5.5
Zirconium (Zr), % 0
0.5 to 1.0
Residuals, % 0
0 to 0.3