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C85500 Brass vs. ZK61A Magnesium

C85500 brass belongs to the copper alloys classification, while ZK61A magnesium belongs to the magnesium alloys. There are 28 material properties with values for both materials. Properties with values for just one material (5, 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 C85500 brass and the bottom bar is ZK61A magnesium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 100
46
Elongation at Break, % 40
5.8 to 7.1
Poisson's Ratio 0.31
0.29
Shear Modulus, GPa 40
18
Tensile Strength: Ultimate (UTS), MPa 410
290 to 310
Tensile Strength: Yield (Proof), MPa 160
180 to 200

Thermal Properties

Latent Heat of Fusion, J/g 170
330
Maximum Temperature: Mechanical, °C 120
120
Melting Completion (Liquidus), °C 900
640
Melting Onset (Solidus), °C 890
530
Specific Heat Capacity, J/kg-K 390
960
Thermal Conductivity, W/m-K 120
120
Thermal Expansion, µm/m-K 21
27

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 26
29
Electrical Conductivity: Equal Weight (Specific), % IACS 29
130

Otherwise Unclassified Properties

Base Metal Price, % relative 23
13
Density, g/cm3 8.0
1.9
Embodied Carbon, kg CO2/kg material 2.7
23
Embodied Energy, MJ/kg 46
160
Embodied Water, L/kg 320
940

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 130
15 to 19
Resilience: Unit (Modulus of Resilience), kJ/m3 120
370 to 420
Stiffness to Weight: Axial, points 7.3
13
Stiffness to Weight: Bending, points 20
62
Strength to Weight: Axial, points 14
42 to 45
Strength to Weight: Bending, points 15
50 to 53
Thermal Diffusivity, mm2/s 38
65
Thermal Shock Resistance, points 14
17 to 18

Alloy Composition

Copper (Cu), % 59 to 63
0 to 0.1
Iron (Fe), % 0 to 0.2
0
Lead (Pb), % 0 to 0.2
0
Magnesium (Mg), % 0
92.1 to 93.9
Manganese (Mn), % 0 to 0.2
0
Nickel (Ni), % 0 to 0.2
0 to 0.010
Tin (Sn), % 0 to 0.2
0
Zinc (Zn), % 35.1 to 41
5.5 to 6.5
Zirconium (Zr), % 0
0.6 to 1.0
Residuals, % 0
0 to 0.3