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C66700 Brass vs. ZK51A Magnesium

C66700 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 C66700 brass and the bottom bar is ZK51A magnesium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 110
45
Elongation at Break, % 2.0 to 58
4.7
Poisson's Ratio 0.31
0.29
Shear Modulus, GPa 41
18
Shear Strength, MPa 250 to 530
160
Tensile Strength: Ultimate (UTS), MPa 340 to 690
240
Tensile Strength: Yield (Proof), MPa 100 to 640
150

Thermal Properties

Latent Heat of Fusion, J/g 180
340
Maximum Temperature: Mechanical, °C 140
120
Melting Completion (Liquidus), °C 1090
640
Melting Onset (Solidus), °C 1050
550
Specific Heat Capacity, J/kg-K 390
970
Thermal Conductivity, W/m-K 97
110
Thermal Expansion, µm/m-K 20
26

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 17
28
Electrical Conductivity: Equal Weight (Specific), % IACS 19
140

Otherwise Unclassified Properties

Base Metal Price, % relative 25
13
Density, g/cm3 8.2
1.8
Embodied Carbon, kg CO2/kg material 2.7
24
Embodied Energy, MJ/kg 45
160
Embodied Water, L/kg 320
940

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 13 to 150
10
Resilience: Unit (Modulus of Resilience), kJ/m3 49 to 1900
260
Stiffness to Weight: Axial, points 7.3
14
Stiffness to Weight: Bending, points 19
64
Strength to Weight: Axial, points 11 to 23
36
Strength to Weight: Bending, points 13 to 21
47
Thermal Diffusivity, mm2/s 30
61
Thermal Shock Resistance, points 11 to 23
15

Alloy Composition

Copper (Cu), % 68.5 to 71.5
0 to 0.1
Iron (Fe), % 0 to 0.1
0
Lead (Pb), % 0 to 0.070
0
Magnesium (Mg), % 0
93.1 to 95.9
Manganese (Mn), % 0.8 to 1.5
0
Nickel (Ni), % 0
0 to 0.010
Zinc (Zn), % 26.3 to 30.7
3.6 to 5.5
Zirconium (Zr), % 0
0.5 to 1.0
Residuals, % 0
0 to 0.3