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EZ33A Magnesium vs. AISI 405 Stainless Steel

EZ33A magnesium belongs to the magnesium alloys classification, while AISI 405 stainless steel belongs to the iron alloys. There are 31 material properties with values for both materials. Properties with values for just one material (7, 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 EZ33A magnesium and the bottom bar is AISI 405 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 55
170
Elastic (Young's, Tensile) Modulus, GPa 44
190
Elongation at Break, % 2.6
22
Fatigue Strength, MPa 70
130
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 17
76
Shear Strength, MPa 140
300
Tensile Strength: Ultimate (UTS), MPa 150
470
Tensile Strength: Yield (Proof), MPa 100
200

Thermal Properties

Latent Heat of Fusion, J/g 330
280
Maximum Temperature: Mechanical, °C 250
820
Melting Completion (Liquidus), °C 640
1530
Melting Onset (Solidus), °C 570
1480
Specific Heat Capacity, J/kg-K 970
480
Thermal Conductivity, W/m-K 100
30
Thermal Expansion, µm/m-K 27
11

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 24
2.9
Electrical Conductivity: Equal Weight (Specific), % IACS 110
3.3

Otherwise Unclassified Properties

Base Metal Price, % relative 25
7.0
Density, g/cm3 1.9
7.7
Embodied Carbon, kg CO2/kg material 25
2.0
Embodied Energy, MJ/kg 190
28
Embodied Water, L/kg 930
100

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 3.6
84
Resilience: Unit (Modulus of Resilience), kJ/m3 120
100
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 61
25
Strength to Weight: Axial, points 22
17
Strength to Weight: Bending, points 33
17
Thermal Diffusivity, mm2/s 54
8.1
Thermal Shock Resistance, points 9.2
16

Alloy Composition

Aluminum (Al), % 0
0.1 to 0.3
Carbon (C), % 0
0 to 0.080
Chromium (Cr), % 0
11.5 to 14.5
Copper (Cu), % 0 to 0.1
0
Iron (Fe), % 0
82.5 to 88.4
Magnesium (Mg), % 91.5 to 95
0
Manganese (Mn), % 0
0 to 1.0
Nickel (Ni), % 0 to 0.010
0 to 0.6
Phosphorus (P), % 0
0 to 0.040
Silicon (Si), % 0
0 to 1.0
Sulfur (S), % 0
0 to 0.030
Unspecified Rare Earths, % 2.5 to 4.0
0
Zinc (Zn), % 2.0 to 3.1
0
Zirconium (Zr), % 0.5 to 1.0
0
Residuals, % 0 to 0.3
0