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C99750 Brass vs. ZK61A Magnesium

C99750 brass belongs to the copper alloys classification, while ZK61A magnesium belongs to the magnesium alloys. There are 26 material properties with values for both materials. Properties with values for just one material (7, 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 C99750 brass and the bottom bar is ZK61A magnesium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 130
46
Elongation at Break, % 20 to 30
5.8 to 7.1
Poisson's Ratio 0.32
0.29
Shear Modulus, GPa 48
18
Tensile Strength: Ultimate (UTS), MPa 450 to 520
290 to 310
Tensile Strength: Yield (Proof), MPa 220 to 280
180 to 200

Thermal Properties

Latent Heat of Fusion, J/g 200
330
Maximum Temperature: Mechanical, °C 160
120
Melting Completion (Liquidus), °C 840
640
Melting Onset (Solidus), °C 820
530
Specific Heat Capacity, J/kg-K 410
960
Thermal Expansion, µm/m-K 20
27

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.0
29
Electrical Conductivity: Equal Weight (Specific), % IACS 2.2
130

Otherwise Unclassified Properties

Base Metal Price, % relative 23
13
Density, g/cm3 8.1
1.9
Embodied Carbon, kg CO2/kg material 3.1
23
Embodied Energy, MJ/kg 51
160
Embodied Water, L/kg 310
940

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 87 to 110
15 to 19
Resilience: Unit (Modulus of Resilience), kJ/m3 190 to 300
370 to 420
Stiffness to Weight: Axial, points 8.6
13
Stiffness to Weight: Bending, points 21
62
Strength to Weight: Axial, points 15 to 18
42 to 45
Strength to Weight: Bending, points 16 to 18
50 to 53
Thermal Shock Resistance, points 13 to 15
17 to 18

Alloy Composition

Aluminum (Al), % 0.25 to 3.0
0
Copper (Cu), % 55 to 61
0 to 0.1
Iron (Fe), % 0 to 1.0
0
Lead (Pb), % 0.5 to 2.5
0
Magnesium (Mg), % 0
92.1 to 93.9
Manganese (Mn), % 17 to 23
0
Nickel (Ni), % 0 to 5.0
0 to 0.010
Zinc (Zn), % 17 to 23
5.5 to 6.5
Zirconium (Zr), % 0
0.6 to 1.0
Residuals, % 0
0 to 0.3