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K1A Magnesium vs. C24000 Brass

K1A magnesium belongs to the magnesium alloys classification, while C24000 brass belongs to the copper alloys. There are 25 material properties with values for both materials. Properties with values for just one material (8, 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 K1A magnesium and the bottom bar is C24000 brass.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 43
110
Poisson's Ratio 0.29
0.32
Shear Modulus, GPa 17
42
Tensile Strength: Ultimate (UTS), MPa 180
310 to 640

Thermal Properties

Latent Heat of Fusion, J/g 350
190
Maximum Temperature: Mechanical, °C 120
160
Melting Completion (Liquidus), °C 650
1000
Melting Onset (Solidus), °C 650
970
Solidification (Pattern Maker's) Shrinkage, % 1.6
5.5
Specific Heat Capacity, J/kg-K 1000
390
Thermal Conductivity, W/m-K 120
140
Thermal Expansion, µm/m-K 27
19

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 30
32
Electrical Conductivity: Equal Weight (Specific), % IACS 170
34

Otherwise Unclassified Properties

Base Metal Price, % relative 13
27
Density, g/cm3 1.6
8.5
Embodied Carbon, kg CO2/kg material 24
2.6
Embodied Energy, MJ/kg 170
43
Embodied Water, L/kg 970
320

Common Calculations

Stiffness to Weight: Axial, points 15
7.2
Stiffness to Weight: Bending, points 73
19
Strength to Weight: Axial, points 31
10 to 21
Strength to Weight: Bending, points 43
12 to 20
Thermal Diffusivity, mm2/s 75
43
Thermal Shock Resistance, points 11
10 to 22

Alloy Composition


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Copper (Cu), % 0
78.5 to 81.5
Iron (Fe), % 0
0 to 0.050
Lead (Pb), % 0
0 to 0.050
Magnesium (Mg), % 98.7 to 99.6
0
Zinc (Zn), % 0
18.2 to 21.5
Zirconium (Zr), % 0.4 to 1.0
0
Residuals, % 0 to 0.3
0 to 0.2