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ZC63A Magnesium vs. AISI 440B Stainless Steel

ZC63A magnesium belongs to the magnesium alloys classification, while AISI 440B stainless steel belongs to the iron alloys. There are 29 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 AISI 440B stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 48
200
Elongation at Break, % 3.3
3.0 to 18
Fatigue Strength, MPa 94
260 to 850
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 19
77
Shear Strength, MPa 130
460 to 1110
Tensile Strength: Ultimate (UTS), MPa 220
740 to 1930
Tensile Strength: Yield (Proof), MPa 130
430 to 1860

Thermal Properties

Latent Heat of Fusion, J/g 330
280
Maximum Temperature: Mechanical, °C 98
870
Melting Completion (Liquidus), °C 550
1480
Melting Onset (Solidus), °C 470
1370
Specific Heat Capacity, J/kg-K 950
480
Thermal Conductivity, W/m-K 120
23
Thermal Expansion, µm/m-K 26
10

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 32
2.5
Electrical Conductivity: Equal Weight (Specific), % IACS 140
2.9

Otherwise Unclassified Properties

Base Metal Price, % relative 13
9.0
Density, g/cm3 2.1
7.7
Embodied Carbon, kg CO2/kg material 22
2.2
Embodied Energy, MJ/kg 150
31
Embodied Water, L/kg 920
120

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 6.3
57 to 110
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 58
25
Strength to Weight: Axial, points 29
27 to 70
Strength to Weight: Bending, points 38
24 to 45
Thermal Diffusivity, mm2/s 58
6.1
Thermal Shock Resistance, points 12
27 to 70

Alloy Composition


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Carbon (C), % 0
0.75 to 1.0
Chromium (Cr), % 0
16 to 18
Copper (Cu), % 2.4 to 3.0
0
Iron (Fe), % 0
78.2 to 83.3
Magnesium (Mg), % 89.2 to 91.9
0
Manganese (Mn), % 0.25 to 0.75
0 to 1.0
Molybdenum (Mo), % 0
0 to 0.75
Nickel (Ni), % 0 to 0.010
0
Phosphorus (P), % 0
0 to 0.040
Silicon (Si), % 0 to 0.2
0 to 1.0
Sulfur (S), % 0
0 to 0.015
Zinc (Zn), % 5.5 to 6.5
0
Residuals, % 0 to 0.3
0