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ZK40A Magnesium vs. C99400 Brass

ZK40A magnesium belongs to the magnesium alloys classification, while C99400 brass belongs to the copper alloys. There are 24 material properties with values for both materials. Properties with values for just one material (6, 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 C99400 brass.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 45
120
Poisson's Ratio 0.29
0.34
Shear Modulus, GPa 17
44
Tensile Strength: Ultimate (UTS), MPa 280
460 to 550
Tensile Strength: Yield (Proof), MPa 260
230 to 370

Thermal Properties

Latent Heat of Fusion, J/g 340
230
Maximum Temperature: Mechanical, °C 120
200
Melting Completion (Liquidus), °C 600
1070
Melting Onset (Solidus), °C 540
1020
Specific Heat Capacity, J/kg-K 970
400
Thermal Expansion, µm/m-K 26
17

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 27
17
Electrical Conductivity: Equal Weight (Specific), % IACS 130
17

Otherwise Unclassified Properties

Base Metal Price, % relative 13
30
Density, g/cm3 1.8
8.7
Embodied Carbon, kg CO2/kg material 24
2.8
Embodied Energy, MJ/kg 160
45
Embodied Water, L/kg 950
310

Common Calculations

Resilience: Unit (Modulus of Resilience), kJ/m3 740
230 to 590
Stiffness to Weight: Axial, points 14
7.5
Stiffness to Weight: Bending, points 65
19
Strength to Weight: Axial, points 43
15 to 17
Strength to Weight: Bending, points 53
15 to 17
Thermal Shock Resistance, points 17
16 to 19

Alloy Composition

Aluminum (Al), % 0
0.5 to 2.0
Copper (Cu), % 0
83.5 to 96.5
Iron (Fe), % 0
1.0 to 3.0
Lead (Pb), % 0
0 to 0.25
Magnesium (Mg), % 94.2 to 96.1
0
Manganese (Mn), % 0
0 to 0.5
Nickel (Ni), % 0
1.0 to 3.5
Silicon (Si), % 0
0.5 to 2.0
Zinc (Zn), % 3.5 to 4.5
0.5 to 5.0
Zirconium (Zr), % 0.45 to 1.0
0
Residuals, % 0 to 0.3
0 to 0.3