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S45500 Stainless Steel vs. ZE41A Magnesium

S45500 stainless steel belongs to the iron alloys classification, while ZE41A magnesium belongs to the magnesium alloys. There are 26 material properties with values for both materials. Properties with values for just one material (12, 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 S45500 stainless steel and the bottom bar is ZE41A magnesium.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 280 to 500
63
Elastic (Young's, Tensile) Modulus, GPa 190
45
Elongation at Break, % 3.4 to 11
3.3
Fatigue Strength, MPa 570 to 890
98
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 75
18
Shear Strength, MPa 790 to 1090
150
Tensile Strength: Ultimate (UTS), MPa 1370 to 1850
210
Tensile Strength: Yield (Proof), MPa 1240 to 1700
140

Thermal Properties

Latent Heat of Fusion, J/g 270
330
Maximum Temperature: Mechanical, °C 760
150
Melting Completion (Liquidus), °C 1440
640
Melting Onset (Solidus), °C 1400
540
Specific Heat Capacity, J/kg-K 470
970
Thermal Expansion, µm/m-K 11
27

Otherwise Unclassified Properties

Base Metal Price, % relative 17
18
Density, g/cm3 7.9
1.9
Embodied Carbon, kg CO2/kg material 3.8
24
Embodied Energy, MJ/kg 57
170
Embodied Water, L/kg 120
940

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 45 to 190
6.1
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 24
63
Strength to Weight: Axial, points 48 to 65
31
Strength to Weight: Bending, points 35 to 42
41
Thermal Shock Resistance, points 48 to 64
12

Alloy Composition

Carbon (C), % 0 to 0.050
0
Chromium (Cr), % 11 to 12.5
0
Copper (Cu), % 1.5 to 2.5
0 to 0.1
Iron (Fe), % 71.5 to 79.2
0
Magnesium (Mg), % 0
91.7 to 95.4
Manganese (Mn), % 0 to 0.5
0 to 0.15
Molybdenum (Mo), % 0 to 0.5
0
Nickel (Ni), % 7.5 to 9.5
0 to 0.010
Niobium (Nb), % 0 to 0.5
0
Phosphorus (P), % 0 to 0.040
0
Silicon (Si), % 0 to 0.5
0
Sulfur (S), % 0 to 0.030
0
Tantalum (Ta), % 0 to 0.5
0
Titanium (Ti), % 0.8 to 1.4
0
Unspecified Rare Earths, % 0
0.75 to 1.8
Zinc (Zn), % 0
3.5 to 5.0
Zirconium (Zr), % 0
0.4 to 1.0
Residuals, % 0
0 to 0.3