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AZ91A Magnesium vs. CC763S Brass

AZ91A magnesium belongs to the magnesium alloys classification, while CC763S brass belongs to the copper alloys. There are 27 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 CC763S brass.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 63
130
Elastic (Young's, Tensile) Modulus, GPa 46
110
Elongation at Break, % 5.0
7.3
Poisson's Ratio 0.29
0.31
Shear Modulus, GPa 18
41
Tensile Strength: Ultimate (UTS), MPa 240
490
Tensile Strength: Yield (Proof), MPa 160
270

Thermal Properties

Latent Heat of Fusion, J/g 360
190
Maximum Temperature: Mechanical, °C 130
140
Melting Completion (Liquidus), °C 600
870
Melting Onset (Solidus), °C 470
830
Specific Heat Capacity, J/kg-K 990
400
Thermal Expansion, µm/m-K 26
20

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 10
29
Electrical Conductivity: Equal Weight (Specific), % IACS 52
32

Otherwise Unclassified Properties

Base Metal Price, % relative 12
24
Density, g/cm3 1.7
8.0
Embodied Carbon, kg CO2/kg material 22
2.9
Embodied Energy, MJ/kg 160
49
Embodied Water, L/kg 990
330

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 11
30
Resilience: Unit (Modulus of Resilience), kJ/m3 280
340
Stiffness to Weight: Axial, points 15
7.5
Stiffness to Weight: Bending, points 69
20
Strength to Weight: Axial, points 38
17
Strength to Weight: Bending, points 49
17
Thermal Shock Resistance, points 14
16

Alloy Composition

Aluminum (Al), % 8.3 to 9.7
1.0 to 2.5
Antimony (Sb), % 0
0 to 0.080
Copper (Cu), % 0 to 0.1
56.5 to 67
Iron (Fe), % 0
0.5 to 2.0
Lead (Pb), % 0
0 to 1.5
Magnesium (Mg), % 88.2 to 91.2
0
Manganese (Mn), % 0.13 to 0.5
1.0 to 3.5
Nickel (Ni), % 0 to 0.030
0 to 2.5
Silicon (Si), % 0 to 0.5
0 to 1.0
Tin (Sn), % 0
0 to 1.0
Zinc (Zn), % 0.35 to 1.0
18.9 to 41