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C68400 Brass vs. ZK60A Magnesium

C68400 brass belongs to the copper alloys classification, while ZK60A magnesium belongs to the magnesium alloys. There are 29 material properties with values for both materials. Properties with values for just one material (2, 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 C68400 brass and the bottom bar is ZK60A magnesium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 110
46
Elongation at Break, % 18
4.5 to 9.9
Poisson's Ratio 0.31
0.29
Shear Modulus, GPa 41
18
Shear Strength, MPa 330
170 to 190
Tensile Strength: Ultimate (UTS), MPa 540
320 to 330
Tensile Strength: Yield (Proof), MPa 310
230 to 250

Thermal Properties

Latent Heat of Fusion, J/g 210
330
Maximum Temperature: Mechanical, °C 130
120
Melting Completion (Liquidus), °C 840
600
Melting Onset (Solidus), °C 820
550
Specific Heat Capacity, J/kg-K 400
960
Thermal Conductivity, W/m-K 66
120
Thermal Expansion, µm/m-K 20
26

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 87
29 to 30
Electrical Conductivity: Equal Weight (Specific), % IACS 99
140

Otherwise Unclassified Properties

Base Metal Price, % relative 23
13
Density, g/cm3 7.9
1.9
Embodied Carbon, kg CO2/kg material 2.7
23
Embodied Energy, MJ/kg 47
160
Embodied Water, L/kg 320
940

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 81
14 to 29
Resilience: Unit (Modulus of Resilience), kJ/m3 460
570 to 690
Stiffness to Weight: Axial, points 7.5
13
Stiffness to Weight: Bending, points 20
63
Strength to Weight: Axial, points 19
47 to 49
Strength to Weight: Bending, points 19
55 to 56
Thermal Diffusivity, mm2/s 21
66
Thermal Shock Resistance, points 18
19 to 20

Alloy Composition

Aluminum (Al), % 0 to 0.5
0
Boron (B), % 0.0010 to 0.030
0
Copper (Cu), % 59 to 64
0
Iron (Fe), % 0 to 1.0
0
Lead (Pb), % 0 to 0.090
0
Magnesium (Mg), % 0
92.5 to 94.8
Manganese (Mn), % 0.2 to 1.5
0
Nickel (Ni), % 0 to 0.5
0
Phosphorus (P), % 0.030 to 0.3
0
Silicon (Si), % 1.5 to 2.5
0
Tin (Sn), % 0 to 0.5
0
Zinc (Zn), % 28.6 to 39.3
4.8 to 6.2
Zirconium (Zr), % 0
0.45 to 1.0
Residuals, % 0
0 to 0.3