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AZ92A Magnesium vs. C69300 Brass

AZ92A magnesium belongs to the magnesium alloys classification, while C69300 brass belongs to the copper alloys. There are 29 material properties with values for both materials. Properties with values for just one material (3, 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 AZ92A magnesium and the bottom bar is C69300 brass.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 47
110
Elongation at Break, % 2.1 to 6.8
8.5 to 15
Poisson's Ratio 0.29
0.32
Shear Modulus, GPa 18
41
Shear Strength, MPa 97 to 160
330 to 370
Tensile Strength: Ultimate (UTS), MPa 170 to 270
550 to 630
Tensile Strength: Yield (Proof), MPa 83 to 140
300 to 390

Thermal Properties

Latent Heat of Fusion, J/g 350
240
Maximum Temperature: Mechanical, °C 130
160
Melting Completion (Liquidus), °C 590
880
Melting Onset (Solidus), °C 440
860
Specific Heat Capacity, J/kg-K 980
400
Thermal Conductivity, W/m-K 44 to 58
38
Thermal Expansion, µm/m-K 26
19

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 11 to 12
8.0
Electrical Conductivity: Equal Weight (Specific), % IACS 53 to 62
8.8

Otherwise Unclassified Properties

Base Metal Price, % relative 12
26
Density, g/cm3 1.8
8.2
Embodied Carbon, kg CO2/kg material 22
2.7
Embodied Energy, MJ/kg 160
45
Embodied Water, L/kg 980
310

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 4.0 to 14
47 to 70
Resilience: Unit (Modulus of Resilience), kJ/m3 73 to 220
400 to 700
Stiffness to Weight: Axial, points 14
7.4
Stiffness to Weight: Bending, points 67
19
Strength to Weight: Axial, points 26 to 41
19 to 21
Strength to Weight: Bending, points 38 to 51
18 to 20
Thermal Diffusivity, mm2/s 25 to 33
12
Thermal Shock Resistance, points 10 to 16
19 to 22

Alloy Composition

Aluminum (Al), % 8.3 to 9.7
0
Copper (Cu), % 0 to 0.25
73 to 77
Iron (Fe), % 0
0 to 0.1
Lead (Pb), % 0
0 to 0.090
Magnesium (Mg), % 86.7 to 90
0
Manganese (Mn), % 0.1 to 0.35
0 to 0.1
Nickel (Ni), % 0 to 0.010
0 to 0.1
Phosphorus (P), % 0
0.040 to 0.15
Silicon (Si), % 0 to 0.3
2.7 to 3.4
Tin (Sn), % 0
0 to 0.2
Zinc (Zn), % 1.6 to 2.4
18.4 to 24.3
Residuals, % 0
0 to 0.5