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AZ91A Magnesium vs. C48200 Brass

AZ91A magnesium belongs to the magnesium alloys classification, while C48200 brass belongs to the copper alloys. There are 29 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 AZ91A magnesium and the bottom bar is C48200 brass.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 46
100
Elongation at Break, % 5.0
15 to 40
Poisson's Ratio 0.29
0.31
Shear Modulus, GPa 18
40
Shear Strength, MPa 140
260 to 300
Tensile Strength: Ultimate (UTS), MPa 240
400 to 500
Tensile Strength: Yield (Proof), MPa 160
160 to 320

Thermal Properties

Latent Heat of Fusion, J/g 360
170
Maximum Temperature: Mechanical, °C 130
120
Melting Completion (Liquidus), °C 600
900
Melting Onset (Solidus), °C 470
890
Specific Heat Capacity, J/kg-K 990
380
Thermal Conductivity, W/m-K 73
120
Thermal Expansion, µm/m-K 26
21

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 10
26
Electrical Conductivity: Equal Weight (Specific), % IACS 52
29

Otherwise Unclassified Properties

Base Metal Price, % relative 12
23
Density, g/cm3 1.7
8.0
Embodied Carbon, kg CO2/kg material 22
2.7
Embodied Energy, MJ/kg 160
47
Embodied Water, L/kg 990
330

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 11
61 to 140
Resilience: Unit (Modulus of Resilience), kJ/m3 280
120 to 500
Stiffness to Weight: Axial, points 15
7.2
Stiffness to Weight: Bending, points 69
19
Strength to Weight: Axial, points 38
14 to 17
Strength to Weight: Bending, points 49
15 to 17
Thermal Diffusivity, mm2/s 42
38
Thermal Shock Resistance, points 14
13 to 16

Alloy Composition


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Aluminum (Al), % 8.3 to 9.7
0
Copper (Cu), % 0 to 0.1
59 to 62
Iron (Fe), % 0
0 to 0.1
Lead (Pb), % 0
0.4 to 1.0
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
Tin (Sn), % 0
0.5 to 1.0
Zinc (Zn), % 0.35 to 1.0
35.5 to 40.1
Residuals, % 0
0 to 0.4