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AS41B Magnesium vs. C90500 Gun Metal

AS41B magnesium belongs to the magnesium alloys classification, while C90500 gun metal belongs to the copper alloys. There are 29 material properties with values for both materials. Properties with values for just one material (3, 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 AS41B magnesium and the bottom bar is C90500 gun metal.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 45
110
Elongation at Break, % 6.0
20
Fatigue Strength, MPa 97
90
Poisson's Ratio 0.29
0.34
Shear Modulus, GPa 18
40
Tensile Strength: Ultimate (UTS), MPa 210
320
Tensile Strength: Yield (Proof), MPa 140
160

Thermal Properties

Latent Heat of Fusion, J/g 370
190
Maximum Temperature: Mechanical, °C 110
170
Melting Completion (Liquidus), °C 620
1000
Melting Onset (Solidus), °C 570
850
Specific Heat Capacity, J/kg-K 1000
370
Thermal Conductivity, W/m-K 68
75
Thermal Expansion, µm/m-K 26
18

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 17
11
Electrical Conductivity: Equal Weight (Specific), % IACS 92
11

Otherwise Unclassified Properties

Base Metal Price, % relative 12
35
Density, g/cm3 1.7
8.7
Embodied Carbon, kg CO2/kg material 23
3.6
Embodied Energy, MJ/kg 160
59
Embodied Water, L/kg 980
390

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 11
54
Resilience: Unit (Modulus of Resilience), kJ/m3 220
110
Stiffness to Weight: Axial, points 15
6.9
Stiffness to Weight: Bending, points 72
18
Strength to Weight: Axial, points 35
10
Strength to Weight: Bending, points 47
12
Thermal Diffusivity, mm2/s 41
23
Thermal Shock Resistance, points 13
12

Alloy Composition


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Aluminum (Al), % 3.5 to 5.0
0 to 0.0050
Antimony (Sb), % 0
0 to 0.2
Copper (Cu), % 0 to 0.020
86 to 89
Iron (Fe), % 0 to 0.0035
0 to 0.2
Lead (Pb), % 0
0 to 0.3
Magnesium (Mg), % 92.7 to 95.7
0
Manganese (Mn), % 0.35 to 0.7
0
Nickel (Ni), % 0 to 0.0020
0 to 1.0
Phosphorus (P), % 0
0 to 1.5
Silicon (Si), % 0.5 to 1.5
0 to 0.0050
Sulfur (S), % 0
0 to 0.050
Tin (Sn), % 0
9.0 to 11
Zinc (Zn), % 0 to 0.12
1.0 to 3.0
Residuals, % 0
0 to 0.3