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C68400 Brass vs. ZE41A Magnesium

C68400 brass belongs to the copper alloys classification, while ZE41A magnesium belongs to the magnesium alloys. There are 30 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 C68400 brass and the bottom bar is ZE41A magnesium.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 150
63
Elastic (Young's, Tensile) Modulus, GPa 110
45
Elongation at Break, % 18
3.3
Poisson's Ratio 0.31
0.29
Shear Modulus, GPa 41
18
Shear Strength, MPa 330
150
Tensile Strength: Ultimate (UTS), MPa 540
210
Tensile Strength: Yield (Proof), MPa 310
140

Thermal Properties

Latent Heat of Fusion, J/g 210
330
Maximum Temperature: Mechanical, °C 130
150
Melting Completion (Liquidus), °C 840
640
Melting Onset (Solidus), °C 820
540
Specific Heat Capacity, J/kg-K 400
970
Thermal Conductivity, W/m-K 66
110
Thermal Expansion, µm/m-K 20
27

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 87
27
Electrical Conductivity: Equal Weight (Specific), % IACS 99
130

Otherwise Unclassified Properties

Base Metal Price, % relative 23
18
Density, g/cm3 7.9
1.9
Embodied Carbon, kg CO2/kg material 2.7
24
Embodied Energy, MJ/kg 47
170
Embodied Water, L/kg 320
940

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 81
6.1
Resilience: Unit (Modulus of Resilience), kJ/m3 460
220
Stiffness to Weight: Axial, points 7.5
13
Stiffness to Weight: Bending, points 20
63
Strength to Weight: Axial, points 19
31
Strength to Weight: Bending, points 19
41
Thermal Diffusivity, mm2/s 21
59
Thermal Shock Resistance, points 18
12

Alloy Composition

Aluminum (Al), % 0 to 0.5
0
Boron (B), % 0.0010 to 0.030
0
Copper (Cu), % 59 to 64
0 to 0.1
Iron (Fe), % 0 to 1.0
0
Lead (Pb), % 0 to 0.090
0
Magnesium (Mg), % 0
91.7 to 95.4
Manganese (Mn), % 0.2 to 1.5
0 to 0.15
Nickel (Ni), % 0 to 0.5
0 to 0.010
Phosphorus (P), % 0.030 to 0.3
0
Silicon (Si), % 1.5 to 2.5
0
Tin (Sn), % 0 to 0.5
0
Unspecified Rare Earths, % 0
0.75 to 1.8
Zinc (Zn), % 28.6 to 39.3
3.5 to 5.0
Zirconium (Zr), % 0
0.4 to 1.0
Residuals, % 0
0 to 0.3