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AISI 446 Stainless Steel vs. ZE41A Magnesium

AISI 446 stainless steel belongs to the iron alloys classification, while ZE41A magnesium belongs to the magnesium alloys. There are 31 material properties with values for both materials. Properties with values for just one material (8, 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 AISI 446 stainless steel and the bottom bar is ZE41A magnesium.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 190
63
Elastic (Young's, Tensile) Modulus, GPa 200
45
Elongation at Break, % 23
3.3
Fatigue Strength, MPa 200
98
Poisson's Ratio 0.27
0.29
Shear Modulus, GPa 79
18
Shear Strength, MPa 360
150
Tensile Strength: Ultimate (UTS), MPa 570
210
Tensile Strength: Yield (Proof), MPa 300
140

Thermal Properties

Latent Heat of Fusion, J/g 290
330
Maximum Temperature: Mechanical, °C 1180
150
Melting Completion (Liquidus), °C 1510
640
Melting Onset (Solidus), °C 1430
540
Specific Heat Capacity, J/kg-K 490
970
Thermal Conductivity, W/m-K 17
110
Thermal Expansion, µm/m-K 11
27

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.9
27
Electrical Conductivity: Equal Weight (Specific), % IACS 2.3
130

Otherwise Unclassified Properties

Base Metal Price, % relative 12
18
Density, g/cm3 7.7
1.9
Embodied Carbon, kg CO2/kg material 2.4
24
Embodied Energy, MJ/kg 35
170
Embodied Water, L/kg 150
940

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 110
6.1
Resilience: Unit (Modulus of Resilience), kJ/m3 230
220
Stiffness to Weight: Axial, points 15
13
Stiffness to Weight: Bending, points 26
63
Strength to Weight: Axial, points 21
31
Strength to Weight: Bending, points 20
41
Thermal Diffusivity, mm2/s 4.6
59
Thermal Shock Resistance, points 19
12

Alloy Composition

Carbon (C), % 0 to 0.2
0
Chromium (Cr), % 23 to 27
0
Copper (Cu), % 0
0 to 0.1
Iron (Fe), % 69.2 to 77
0
Magnesium (Mg), % 0
91.7 to 95.4
Manganese (Mn), % 0 to 1.5
0 to 0.15
Nickel (Ni), % 0 to 0.75
0 to 0.010
Nitrogen (N), % 0 to 0.25
0
Phosphorus (P), % 0 to 0.040
0
Silicon (Si), % 0 to 1.0
0
Sulfur (S), % 0 to 0.030
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