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ZC63A Magnesium vs. S82012 Stainless Steel

ZC63A magnesium belongs to the magnesium alloys classification, while S82012 stainless steel belongs to the iron alloys. There are 30 material properties with values for both materials. Properties with values for just one material (5, 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 ZC63A magnesium and the bottom bar is S82012 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 48
200
Elongation at Break, % 3.3
40
Fatigue Strength, MPa 94
480
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 19
78
Shear Strength, MPa 130
550
Tensile Strength: Ultimate (UTS), MPa 220
800
Tensile Strength: Yield (Proof), MPa 130
560

Thermal Properties

Latent Heat of Fusion, J/g 330
280
Maximum Temperature: Mechanical, °C 98
950
Melting Completion (Liquidus), °C 550
1430
Melting Onset (Solidus), °C 470
1380
Specific Heat Capacity, J/kg-K 950
480
Thermal Conductivity, W/m-K 120
15
Thermal Expansion, µm/m-K 26
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 32
2.2
Electrical Conductivity: Equal Weight (Specific), % IACS 140
2.5

Otherwise Unclassified Properties

Base Metal Price, % relative 13
11
Density, g/cm3 2.1
7.7
Embodied Carbon, kg CO2/kg material 22
2.4
Embodied Energy, MJ/kg 150
35
Embodied Water, L/kg 920
140

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 6.3
290
Resilience: Unit (Modulus of Resilience), kJ/m3 190
790
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 58
25
Strength to Weight: Axial, points 29
29
Strength to Weight: Bending, points 38
25
Thermal Diffusivity, mm2/s 58
3.9
Thermal Shock Resistance, points 12
23

Alloy Composition


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Carbon (C), % 0
0 to 0.050
Chromium (Cr), % 0
19 to 20.5
Copper (Cu), % 2.4 to 3.0
0 to 1.0
Iron (Fe), % 0
71.3 to 77.9
Magnesium (Mg), % 89.2 to 91.9
0
Manganese (Mn), % 0.25 to 0.75
2.0 to 4.0
Molybdenum (Mo), % 0
0.1 to 0.6
Nickel (Ni), % 0 to 0.010
0.8 to 1.5
Nitrogen (N), % 0
0.16 to 0.26
Phosphorus (P), % 0
0 to 0.040
Silicon (Si), % 0 to 0.2
0 to 0.8
Sulfur (S), % 0
0 to 0.0050
Zinc (Zn), % 5.5 to 6.5
0
Residuals, % 0 to 0.3
0