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EN-MC21320 Magnesium vs. C49300 Brass

EN-MC21320 magnesium belongs to the magnesium alloys classification, while C49300 brass belongs to the copper alloys. There are 29 material properties with values for both materials. Properties with values for just one material (2, 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 EN-MC21320 magnesium and the bottom bar is C49300 brass.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 45
100
Elongation at Break, % 7.5
4.5 to 20
Poisson's Ratio 0.29
0.31
Shear Modulus, GPa 18
40
Shear Strength, MPa 130
270 to 290
Tensile Strength: Ultimate (UTS), MPa 230
430 to 520
Tensile Strength: Yield (Proof), MPa 140
210 to 410

Thermal Properties

Latent Heat of Fusion, J/g 370
170
Maximum Temperature: Mechanical, °C 110
120
Melting Completion (Liquidus), °C 600
880
Melting Onset (Solidus), °C 530
840
Specific Heat Capacity, J/kg-K 1000
380
Thermal Conductivity, W/m-K 66
88
Thermal Expansion, µm/m-K 26
20

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 17
15
Electrical Conductivity: Equal Weight (Specific), % IACS 91
17

Otherwise Unclassified Properties

Base Metal Price, % relative 12
26
Density, g/cm3 1.6
8.0
Embodied Carbon, kg CO2/kg material 23
3.0
Embodied Energy, MJ/kg 160
50
Embodied Water, L/kg 980
370

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 15
21 to 71
Resilience: Unit (Modulus of Resilience), kJ/m3 200
220 to 800
Stiffness to Weight: Axial, points 15
7.2
Stiffness to Weight: Bending, points 72
19
Strength to Weight: Axial, points 38
15 to 18
Strength to Weight: Bending, points 50
16 to 18
Thermal Diffusivity, mm2/s 40
29
Thermal Shock Resistance, points 13
14 to 18

Alloy Composition

Aluminum (Al), % 3.5 to 5.0
0 to 0.5
Antimony (Sb), % 0
0 to 0.5
Bismuth (Bi), % 0
0.5 to 2.0
Copper (Cu), % 0 to 0.010
58 to 62
Iron (Fe), % 0 to 0.0050
0 to 0.1
Lead (Pb), % 0
0 to 0.010
Magnesium (Mg), % 92.5 to 95.9
0
Manganese (Mn), % 0.1 to 0.7
0 to 0.030
Nickel (Ni), % 0 to 0.0020
0 to 1.5
Phosphorus (P), % 0
0 to 0.2
Selenium (Se), % 0
0 to 0.2
Silicon (Si), % 0.5 to 1.5
0 to 0.1
Tin (Sn), % 0
1.0 to 1.8
Zinc (Zn), % 0 to 0.2
30.6 to 40.5
Residuals, % 0 to 0.010
0 to 0.5