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C68300 Brass vs. ZK60A Magnesium

C68300 brass belongs to the copper alloys classification, while ZK60A magnesium belongs to the magnesium alloys. There are 27 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 C68300 brass and the bottom bar is ZK60A magnesium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 100
46
Elongation at Break, % 15
4.5 to 9.9
Poisson's Ratio 0.31
0.29
Shear Modulus, GPa 40
18
Shear Strength, MPa 260
170 to 190
Tensile Strength: Ultimate (UTS), MPa 430
320 to 330
Tensile Strength: Yield (Proof), MPa 260
230 to 250

Thermal Properties

Latent Heat of Fusion, J/g 180
330
Maximum Temperature: Mechanical, °C 120
120
Melting Completion (Liquidus), °C 900
600
Melting Onset (Solidus), °C 890
550
Specific Heat Capacity, J/kg-K 390
960
Thermal Conductivity, W/m-K 120
120
Thermal Expansion, µm/m-K 20
26

Otherwise Unclassified Properties

Base Metal Price, % relative 23
13
Density, g/cm3 8.0
1.9
Embodied Carbon, kg CO2/kg material 2.8
23
Embodied Energy, MJ/kg 46
160
Embodied Water, L/kg 340
940

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 56
14 to 29
Resilience: Unit (Modulus of Resilience), kJ/m3 330
570 to 690
Stiffness to Weight: Axial, points 7.3
13
Stiffness to Weight: Bending, points 20
63
Strength to Weight: Axial, points 15
47 to 49
Strength to Weight: Bending, points 16
55 to 56
Thermal Diffusivity, mm2/s 38
66
Thermal Shock Resistance, points 14
19 to 20

Alloy Composition

Antimony (Sb), % 0.3 to 1.0
0
Cadmium (Cd), % 0 to 0.010
0
Copper (Cu), % 59 to 63
0
Lead (Pb), % 0 to 0.090
0
Magnesium (Mg), % 0
92.5 to 94.8
Silicon (Si), % 0.3 to 1.0
0
Tin (Sn), % 0.050 to 0.2
0
Zinc (Zn), % 34.2 to 40.4
4.8 to 6.2
Zirconium (Zr), % 0
0.45 to 1.0
Residuals, % 0
0 to 0.3