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QE22A Magnesium vs. C99400 Brass

QE22A magnesium belongs to the magnesium alloys classification, while C99400 brass belongs to the copper alloys. There are 22 material properties with values for both materials. Properties with values for just one material (12, 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 QE22A magnesium and the bottom bar is C99400 brass.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 44
120
Poisson's Ratio 0.29
0.34
Shear Modulus, GPa 17
44
Tensile Strength: Ultimate (UTS), MPa 250
460 to 550
Tensile Strength: Yield (Proof), MPa 190
230 to 370

Thermal Properties

Latent Heat of Fusion, J/g 340
230
Maximum Temperature: Mechanical, °C 250
200
Melting Completion (Liquidus), °C 640
1070
Melting Onset (Solidus), °C 570
1020
Specific Heat Capacity, J/kg-K 970
400
Thermal Expansion, µm/m-K 27
17

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 25
17
Electrical Conductivity: Equal Weight (Specific), % IACS 120
17

Otherwise Unclassified Properties

Density, g/cm3 2.0
8.7
Embodied Carbon, kg CO2/kg material 27
2.8
Embodied Energy, MJ/kg 220
45

Common Calculations

Resilience: Unit (Modulus of Resilience), kJ/m3 400
230 to 590
Stiffness to Weight: Axial, points 13
7.5
Stiffness to Weight: Bending, points 60
19
Strength to Weight: Axial, points 36
15 to 17
Strength to Weight: Bending, points 46
15 to 17
Thermal Shock Resistance, points 15
16 to 19

Alloy Composition

Aluminum (Al), % 0
0.5 to 2.0
Copper (Cu), % 0 to 0.1
83.5 to 96.5
Iron (Fe), % 0
1.0 to 3.0
Lead (Pb), % 0
0 to 0.25
Magnesium (Mg), % 93.1 to 95.8
0
Manganese (Mn), % 0
0 to 0.5
Nickel (Ni), % 0 to 0.010
1.0 to 3.5
Silicon (Si), % 0
0.5 to 2.0
Silver (Ag), % 2.0 to 3.0
0
Unspecified Rare Earths, % 1.8 to 2.5
0
Zinc (Zn), % 0
0.5 to 5.0
Zirconium (Zr), % 0.4 to 1.0
0
Residuals, % 0
0 to 0.3