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EZ33A Magnesium vs. EN 1.4634 Stainless Steel

EZ33A magnesium belongs to the magnesium alloys classification, while EN 1.4634 stainless steel belongs to the iron alloys. There are 30 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 EZ33A magnesium and the bottom bar is EN 1.4634 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 44
200
Elongation at Break, % 2.6
21
Fatigue Strength, MPa 70
180
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 17
77
Shear Strength, MPa 140
340
Tensile Strength: Ultimate (UTS), MPa 150
540
Tensile Strength: Yield (Proof), MPa 100
280

Thermal Properties

Latent Heat of Fusion, J/g 330
290
Maximum Temperature: Mechanical, °C 250
900
Melting Completion (Liquidus), °C 640
1430
Melting Onset (Solidus), °C 570
1390
Specific Heat Capacity, J/kg-K 970
480
Thermal Conductivity, W/m-K 100
21
Thermal Expansion, µm/m-K 27
10

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 24
2.5
Electrical Conductivity: Equal Weight (Specific), % IACS 110
3.0

Otherwise Unclassified Properties

Base Metal Price, % relative 25
13
Density, g/cm3 1.9
7.7
Embodied Carbon, kg CO2/kg material 25
2.9
Embodied Energy, MJ/kg 190
42
Embodied Water, L/kg 930
140

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 3.6
93
Resilience: Unit (Modulus of Resilience), kJ/m3 120
200
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 61
25
Strength to Weight: Axial, points 22
20
Strength to Weight: Bending, points 33
19
Thermal Diffusivity, mm2/s 54
5.8
Thermal Shock Resistance, points 9.2
19

Alloy Composition

Aluminum (Al), % 0
0.2 to 1.5
Carbon (C), % 0
0 to 0.030
Chromium (Cr), % 0
17.5 to 18.5
Copper (Cu), % 0 to 0.1
0 to 0.5
Iron (Fe), % 0
74.9 to 81.8
Magnesium (Mg), % 91.5 to 95
0
Manganese (Mn), % 0
0 to 1.0
Molybdenum (Mo), % 0
0 to 0.5
Nickel (Ni), % 0 to 0.010
0 to 0.5
Niobium (Nb), % 0
0.3 to 1.0
Phosphorus (P), % 0
0 to 0.050
Silicon (Si), % 0
0.2 to 1.5
Sulfur (S), % 0
0 to 0.050
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