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ZC63A Magnesium vs. S46800 Stainless Steel

ZC63A 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 (4, 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 S46800 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 60
180
Elastic (Young's, Tensile) Modulus, GPa 48
200
Elongation at Break, % 3.3
25
Fatigue Strength, MPa 94
160
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 19
77
Shear Strength, MPa 130
300
Tensile Strength: Ultimate (UTS), MPa 220
470
Tensile Strength: Yield (Proof), MPa 130
230

Thermal Properties

Latent Heat of Fusion, J/g 330
290
Maximum Temperature: Mechanical, °C 98
920
Melting Completion (Liquidus), °C 550
1440
Melting Onset (Solidus), °C 470
1400
Specific Heat Capacity, J/kg-K 950
480
Thermal Conductivity, W/m-K 120
23
Thermal Expansion, µm/m-K 26
11

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 32
2.8
Electrical Conductivity: Equal Weight (Specific), % IACS 140
3.3

Otherwise Unclassified Properties

Base Metal Price, % relative 13
12
Density, g/cm3 2.1
7.7
Embodied Carbon, kg CO2/kg material 22
2.6
Embodied Energy, MJ/kg 150
37
Embodied Water, L/kg 920
130

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 6.3
98
Resilience: Unit (Modulus of Resilience), kJ/m3 190
130
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 58
25
Strength to Weight: Axial, points 29
17
Strength to Weight: Bending, points 38
18
Thermal Diffusivity, mm2/s 58
6.1
Thermal Shock Resistance, points 12
16

Alloy Composition


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Carbon (C), % 0
0 to 0.030
Chromium (Cr), % 0
18 to 20
Copper (Cu), % 2.4 to 3.0
0
Iron (Fe), % 0
76.5 to 81.8
Magnesium (Mg), % 89.2 to 91.9
0
Manganese (Mn), % 0.25 to 0.75
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 to 0.2
0 to 1.0
Sulfur (S), % 0
0 to 0.030
Titanium (Ti), % 0
0.070 to 0.3
Zinc (Zn), % 5.5 to 6.5
0
Residuals, % 0 to 0.3
0