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AZ91A Magnesium vs. C26200 Brass

AZ91A magnesium belongs to the magnesium alloys classification, while C26200 brass belongs to the copper alloys. There are 29 material properties with values for both materials. Properties with values for just one material (6, 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 AZ91A magnesium and the bottom bar is C26200 brass.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 46
110
Elongation at Break, % 5.0
3.0 to 180
Poisson's Ratio 0.29
0.31
Shear Modulus, GPa 18
41
Shear Strength, MPa 140
230 to 390
Tensile Strength: Ultimate (UTS), MPa 240
330 to 770
Tensile Strength: Yield (Proof), MPa 160
110 to 490

Thermal Properties

Latent Heat of Fusion, J/g 360
180
Maximum Temperature: Mechanical, °C 130
140
Melting Completion (Liquidus), °C 600
950
Melting Onset (Solidus), °C 470
920
Specific Heat Capacity, J/kg-K 990
390
Thermal Conductivity, W/m-K 73
120
Thermal Expansion, µm/m-K 26
20

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 10
28
Electrical Conductivity: Equal Weight (Specific), % IACS 52
31

Otherwise Unclassified Properties

Base Metal Price, % relative 12
25
Density, g/cm3 1.7
8.2
Embodied Carbon, kg CO2/kg material 22
2.7
Embodied Energy, MJ/kg 160
45
Embodied Water, L/kg 990
320

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 11
19 to 160
Resilience: Unit (Modulus of Resilience), kJ/m3 280
62 to 1110
Stiffness to Weight: Axial, points 15
7.2
Stiffness to Weight: Bending, points 69
19
Strength to Weight: Axial, points 38
11 to 26
Strength to Weight: Bending, points 49
13 to 23
Thermal Diffusivity, mm2/s 42
38
Thermal Shock Resistance, points 14
11 to 26

Alloy Composition


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Aluminum (Al), % 8.3 to 9.7
0
Copper (Cu), % 0 to 0.1
67 to 70
Iron (Fe), % 0
0 to 0.050
Lead (Pb), % 0
0 to 0.070
Magnesium (Mg), % 88.2 to 91.2
0
Manganese (Mn), % 0.13 to 0.5
0
Nickel (Ni), % 0 to 0.030
0
Silicon (Si), % 0 to 0.5
0
Zinc (Zn), % 0.35 to 1.0
29.6 to 33
Residuals, % 0
0 to 0.3