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AZ81A Magnesium vs. Type 2 Pewter

AZ81A magnesium belongs to the magnesium alloys classification, while Type 2 pewter belongs to the otherwise unclassified metals. There are 20 material properties with values for both materials. Properties with values for just one material (13, 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 AZ81A magnesium and the bottom bar is Type 2 pewter.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 55
13 to 23
Elastic (Young's, Tensile) Modulus, GPa 46
52
Poisson's Ratio 0.29
0.35
Shear Modulus, GPa 18
19
Tensile Strength: Ultimate (UTS), MPa 160 to 240
52 to 68

Thermal Properties

Latent Heat of Fusion, J/g 350
69
Melting Completion (Liquidus), °C 600
300
Melting Onset (Solidus), °C 500
240
Specific Heat Capacity, J/kg-K 990
220
Thermal Expansion, µm/m-K 27
21

Otherwise Unclassified Properties

Base Metal Price, % relative 12
75
Density, g/cm3 1.7
7.3
Embodied Carbon, kg CO2/kg material 23
12
Embodied Energy, MJ/kg 160
210
Embodied Water, L/kg 990
1220

Common Calculations

Stiffness to Weight: Axial, points 15
3.9
Stiffness to Weight: Bending, points 70
17
Strength to Weight: Axial, points 26 to 39
2.0 to 2.6
Strength to Weight: Bending, points 38 to 50
4.3 to 5.1
Thermal Shock Resistance, points 9.1 to 14
3.4 to 4.4

Alloy Composition


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Aluminum (Al), % 7.0 to 8.1
0
Antimony (Sb), % 0
5.0 to 7.5
Arsenic (As), % 0
0 to 0.050
Copper (Cu), % 0 to 0.1
1.5 to 3.0
Iron (Fe), % 0
0 to 0.015
Lead (Pb), % 0
0 to 0.050
Magnesium (Mg), % 89.8 to 92.5
0
Manganese (Mn), % 0.13 to 0.35
0
Nickel (Ni), % 0 to 0.010
0
Silicon (Si), % 0 to 0.3
0
Tin (Sn), % 0
90 to 93
Zinc (Zn), % 0.4 to 1.0
0 to 0.0050
Residuals, % 0 to 0.3
0

Comparable Variants