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ZE63A Magnesium vs. S46800 Stainless Steel

ZE63A magnesium belongs to the magnesium alloys classification, while S46800 stainless steel belongs to the iron alloys. There are 31 material properties with values for both materials. Properties with values for just one material (6, 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 ZE63A magnesium and the bottom bar is S46800 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 73
180
Elastic (Young's, Tensile) Modulus, GPa 46
200
Elongation at Break, % 7.7
25
Fatigue Strength, MPa 120
160
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 17
77
Shear Strength, MPa 170
300
Tensile Strength: Ultimate (UTS), MPa 300
470
Tensile Strength: Yield (Proof), MPa 190
230

Thermal Properties

Latent Heat of Fusion, J/g 330
290
Maximum Temperature: Mechanical, °C 170
920
Melting Completion (Liquidus), °C 510
1440
Melting Onset (Solidus), °C 390
1400
Specific Heat Capacity, J/kg-K 950
480
Thermal Conductivity, W/m-K 110
23
Thermal Expansion, µm/m-K 27
11

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 31
2.8
Electrical Conductivity: Equal Weight (Specific), % IACS 140
3.3

Otherwise Unclassified Properties

Base Metal Price, % relative 22
12
Density, g/cm3 2.0
7.7
Embodied Carbon, kg CO2/kg material 24
2.6
Embodied Energy, MJ/kg 180
37
Embodied Water, L/kg 920
130

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 20
98
Resilience: Unit (Modulus of Resilience), kJ/m3 400
130
Stiffness to Weight: Axial, points 12
14
Stiffness to Weight: Bending, points 58
25
Strength to Weight: Axial, points 40
17
Strength to Weight: Bending, points 48
18
Thermal Diffusivity, mm2/s 57
6.1
Thermal Shock Resistance, points 17
16

Alloy Composition

Carbon (C), % 0
0 to 0.030
Chromium (Cr), % 0
18 to 20
Copper (Cu), % 0 to 0.1
0
Iron (Fe), % 0
76.5 to 81.8
Magnesium (Mg), % 89.6 to 92
0
Manganese (Mn), % 0
0 to 1.0
Nickel (Ni), % 0 to 0.010
0 to 0.5
Niobium (Nb), % 0
0.1 to 0.6
Nitrogen (N), % 0
0 to 0.030
Phosphorus (P), % 0
0 to 0.040
Silicon (Si), % 0
0 to 1.0
Sulfur (S), % 0
0 to 0.030
Titanium (Ti), % 0
0.070 to 0.3
Unspecified Rare Earths, % 2.1 to 3.0
0
Zinc (Zn), % 5.5 to 6.0
0
Zirconium (Zr), % 0.4 to 1.0
0
Residuals, % 0 to 0.3
0