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AZ91A Magnesium vs. C77400 Nickel Silver

AZ91A magnesium belongs to the magnesium alloys classification, while C77400 nickel silver belongs to the copper alloys. There are 27 material properties with values for both materials. Properties with values for just one material (7, 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 C77400 nickel silver.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 46
110
Elongation at Break, % 5.0
25
Poisson's Ratio 0.29
0.3
Shear Modulus, GPa 18
42
Shear Strength, MPa 140
360
Tensile Strength: Ultimate (UTS), MPa 240
570
Tensile Strength: Yield (Proof), MPa 160
250

Thermal Properties

Latent Heat of Fusion, J/g 360
170
Maximum Temperature: Mechanical, °C 130
130
Melting Completion (Liquidus), °C 600
810
Melting Onset (Solidus), °C 470
770
Specific Heat Capacity, J/kg-K 990
390
Thermal Expansion, µm/m-K 26
21

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 10
27
Electrical Conductivity: Equal Weight (Specific), % IACS 52
31

Otherwise Unclassified Properties

Base Metal Price, % relative 12
25
Density, g/cm3 1.7
7.9
Embodied Carbon, kg CO2/kg material 22
3.5
Embodied Energy, MJ/kg 160
57
Embodied Water, L/kg 990
320

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 11
120
Resilience: Unit (Modulus of Resilience), kJ/m3 280
290
Stiffness to Weight: Axial, points 15
7.7
Stiffness to Weight: Bending, points 69
20
Strength to Weight: Axial, points 38
20
Strength to Weight: Bending, points 49
19
Thermal Shock Resistance, points 14
18

Alloy Composition


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Aluminum (Al), % 8.3 to 9.7
0
Copper (Cu), % 0 to 0.1
43 to 47
Lead (Pb), % 0
0 to 0.2
Magnesium (Mg), % 88.2 to 91.2
0
Manganese (Mn), % 0.13 to 0.5
0
Nickel (Ni), % 0 to 0.030
9.0 to 11
Silicon (Si), % 0 to 0.5
0
Zinc (Zn), % 0.35 to 1.0
41.3 to 48
Residuals, % 0
0 to 0.5