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S44635 Stainless Steel vs. ZE63A Magnesium

S44635 stainless steel belongs to the iron alloys classification, while ZE63A magnesium belongs to the magnesium 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 S44635 stainless steel and the bottom bar is ZE63A magnesium.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 240
73
Elastic (Young's, Tensile) Modulus, GPa 210
46
Elongation at Break, % 23
7.7
Fatigue Strength, MPa 390
120
Poisson's Ratio 0.27
0.29
Shear Modulus, GPa 81
17
Shear Strength, MPa 450
170
Tensile Strength: Ultimate (UTS), MPa 710
300
Tensile Strength: Yield (Proof), MPa 580
190

Thermal Properties

Latent Heat of Fusion, J/g 300
330
Maximum Temperature: Mechanical, °C 1100
170
Melting Completion (Liquidus), °C 1460
510
Melting Onset (Solidus), °C 1420
390
Specific Heat Capacity, J/kg-K 470
950
Thermal Conductivity, W/m-K 16
110
Thermal Expansion, µm/m-K 11
27

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.2
31
Electrical Conductivity: Equal Weight (Specific), % IACS 2.5
140

Otherwise Unclassified Properties

Base Metal Price, % relative 22
22
Density, g/cm3 7.8
2.0
Embodied Carbon, kg CO2/kg material 4.4
24
Embodied Energy, MJ/kg 62
180
Embodied Water, L/kg 170
920

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 150
20
Resilience: Unit (Modulus of Resilience), kJ/m3 810
400
Stiffness to Weight: Axial, points 15
12
Stiffness to Weight: Bending, points 25
58
Strength to Weight: Axial, points 25
40
Strength to Weight: Bending, points 23
48
Thermal Diffusivity, mm2/s 4.4
57
Thermal Shock Resistance, points 23
17

Alloy Composition

Carbon (C), % 0 to 0.025
0
Chromium (Cr), % 24.5 to 26
0
Copper (Cu), % 0
0 to 0.1
Iron (Fe), % 61.5 to 68.5
0
Magnesium (Mg), % 0
89.6 to 92
Manganese (Mn), % 0 to 1.0
0
Molybdenum (Mo), % 3.5 to 4.5
0
Nickel (Ni), % 3.5 to 4.5
0 to 0.010
Niobium (Nb), % 0.2 to 0.8
0
Nitrogen (N), % 0 to 0.035
0
Phosphorus (P), % 0 to 0.040
0
Silicon (Si), % 0 to 0.75
0
Sulfur (S), % 0 to 0.030
0
Titanium (Ti), % 0.2 to 0.8
0
Unspecified Rare Earths, % 0
2.1 to 3.0
Zinc (Zn), % 0
5.5 to 6.0
Zirconium (Zr), % 0
0.4 to 1.0
Residuals, % 0
0 to 0.3