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AZ92A Magnesium vs. C42200 Brass

AZ92A magnesium belongs to the magnesium alloys classification, while C42200 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 AZ92A magnesium and the bottom bar is C42200 brass.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 47
110
Elongation at Break, % 2.1 to 6.8
2.0 to 46
Poisson's Ratio 0.29
0.33
Shear Modulus, GPa 18
42
Shear Strength, MPa 97 to 160
210 to 350
Tensile Strength: Ultimate (UTS), MPa 170 to 270
300 to 610
Tensile Strength: Yield (Proof), MPa 83 to 140
100 to 570

Thermal Properties

Latent Heat of Fusion, J/g 350
200
Maximum Temperature: Mechanical, °C 130
170
Melting Completion (Liquidus), °C 590
1040
Melting Onset (Solidus), °C 440
1020
Specific Heat Capacity, J/kg-K 980
380
Thermal Conductivity, W/m-K 44 to 58
130
Thermal Expansion, µm/m-K 26
18

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 11 to 12
31
Electrical Conductivity: Equal Weight (Specific), % IACS 53 to 62
32

Otherwise Unclassified Properties

Base Metal Price, % relative 12
29
Density, g/cm3 1.8
8.6
Embodied Carbon, kg CO2/kg material 22
2.7
Embodied Energy, MJ/kg 160
44
Embodied Water, L/kg 980
320

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 4.0 to 14
12 to 110
Resilience: Unit (Modulus of Resilience), kJ/m3 73 to 220
49 to 1460
Stiffness to Weight: Axial, points 14
7.2
Stiffness to Weight: Bending, points 67
19
Strength to Weight: Axial, points 26 to 41
9.5 to 19
Strength to Weight: Bending, points 38 to 51
11 to 18
Thermal Diffusivity, mm2/s 25 to 33
39
Thermal Shock Resistance, points 10 to 16
10 to 21

Alloy Composition

Aluminum (Al), % 8.3 to 9.7
0
Copper (Cu), % 0 to 0.25
86 to 89
Iron (Fe), % 0
0 to 0.050
Lead (Pb), % 0
0 to 0.050
Magnesium (Mg), % 86.7 to 90
0
Manganese (Mn), % 0.1 to 0.35
0
Nickel (Ni), % 0 to 0.010
0
Phosphorus (P), % 0
0 to 0.35
Silicon (Si), % 0 to 0.3
0
Tin (Sn), % 0
0.8 to 1.4
Zinc (Zn), % 1.6 to 2.4
8.7 to 13.2
Residuals, % 0
0 to 0.5