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C87900 Brass vs. ZK61A Magnesium

C87900 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 (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 C87900 brass and the bottom bar is ZK61A magnesium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 110
46
Elongation at Break, % 25
5.8 to 7.1
Poisson's Ratio 0.31
0.29
Shear Modulus, GPa 41
18
Tensile Strength: Ultimate (UTS), MPa 480
290 to 310
Tensile Strength: Yield (Proof), MPa 240
180 to 200

Thermal Properties

Latent Heat of Fusion, J/g 190
330
Maximum Temperature: Mechanical, °C 130
120
Melting Completion (Liquidus), °C 930
640
Melting Onset (Solidus), °C 900
530
Specific Heat Capacity, J/kg-K 390
960
Thermal Conductivity, W/m-K 120
120
Thermal Expansion, µm/m-K 20
27

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 15
29
Electrical Conductivity: Equal Weight (Specific), % IACS 17
130

Otherwise Unclassified Properties

Base Metal Price, % relative 24
13
Density, g/cm3 8.1
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 100
15 to 19
Resilience: Unit (Modulus of Resilience), kJ/m3 270
370 to 420
Stiffness to Weight: Axial, points 7.3
13
Stiffness to Weight: Bending, points 20
62
Strength to Weight: Axial, points 17
42 to 45
Strength to Weight: Bending, points 17
50 to 53
Thermal Diffusivity, mm2/s 37
65
Thermal Shock Resistance, points 16
17 to 18

Alloy Composition

Aluminum (Al), % 0 to 0.15
0
Antimony (Sb), % 0 to 0.050
0
Arsenic (As), % 0 to 0.050
0
Copper (Cu), % 63 to 69.2
0 to 0.1
Iron (Fe), % 0 to 0.4
0
Lead (Pb), % 0 to 0.25
0
Magnesium (Mg), % 0
92.1 to 93.9
Manganese (Mn), % 0 to 0.15
0
Nickel (Ni), % 0 to 0.5
0 to 0.010
Phosphorus (P), % 0 to 0.010
0
Silicon (Si), % 0.8 to 1.2
0
Sulfur (S), % 0 to 0.050
0
Tin (Sn), % 0 to 0.25
0
Zinc (Zn), % 30 to 36
5.5 to 6.5
Zirconium (Zr), % 0
0.6 to 1.0
Residuals, % 0
0 to 0.3