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S44800 Stainless Steel vs. ZC63A Magnesium

S44800 stainless steel belongs to the iron alloys classification, while ZC63A magnesium belongs to the magnesium alloys. There are 31 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 S44800 stainless steel and the bottom bar is ZC63A magnesium.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 190
60
Elastic (Young's, Tensile) Modulus, GPa 210
48
Elongation at Break, % 23
3.3
Fatigue Strength, MPa 300
94
Poisson's Ratio 0.27
0.29
Shear Modulus, GPa 82
19
Shear Strength, MPa 370
130
Tensile Strength: Ultimate (UTS), MPa 590
220
Tensile Strength: Yield (Proof), MPa 450
130

Thermal Properties

Latent Heat of Fusion, J/g 300
330
Maximum Temperature: Mechanical, °C 1100
98
Melting Completion (Liquidus), °C 1460
550
Melting Onset (Solidus), °C 1410
470
Specific Heat Capacity, J/kg-K 480
950
Thermal Conductivity, W/m-K 17
120
Thermal Expansion, µm/m-K 11
26

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.6
32
Electrical Conductivity: Equal Weight (Specific), % IACS 3.0
140

Otherwise Unclassified Properties

Base Metal Price, % relative 19
13
Density, g/cm3 7.8
2.1
Embodied Carbon, kg CO2/kg material 3.8
22
Embodied Energy, MJ/kg 52
150
Embodied Water, L/kg 190
920

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 120
6.3
Resilience: Unit (Modulus of Resilience), kJ/m3 480
190
Stiffness to Weight: Axial, points 15
13
Stiffness to Weight: Bending, points 25
58
Strength to Weight: Axial, points 21
29
Strength to Weight: Bending, points 20
38
Thermal Diffusivity, mm2/s 4.6
58
Thermal Shock Resistance, points 19
12

Alloy Composition

Carbon (C), % 0 to 0.010
0
Chromium (Cr), % 28 to 30
0
Copper (Cu), % 0 to 0.15
2.4 to 3.0
Iron (Fe), % 62.6 to 66.5
0
Magnesium (Mg), % 0
89.2 to 91.9
Manganese (Mn), % 0 to 0.3
0.25 to 0.75
Molybdenum (Mo), % 3.5 to 4.2
0
Nickel (Ni), % 2.0 to 2.5
0 to 0.010
Nitrogen (N), % 0 to 0.020
0
Phosphorus (P), % 0 to 0.025
0
Silicon (Si), % 0 to 0.2
0 to 0.2
Sulfur (S), % 0 to 0.020
0
Zinc (Zn), % 0
5.5 to 6.5
Residuals, % 0
0 to 0.3