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EN 1.4618 Stainless Steel vs. EZ33A Magnesium

EN 1.4618 stainless steel belongs to the iron alloys classification, while EZ33A magnesium belongs to the magnesium alloys. There are 31 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 EN 1.4618 stainless steel and the bottom bar is EZ33A magnesium.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 200 to 210
55
Elastic (Young's, Tensile) Modulus, GPa 200
44
Elongation at Break, % 51
2.6
Fatigue Strength, MPa 240 to 250
70
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 77
17
Shear Strength, MPa 480 to 500
140
Tensile Strength: Ultimate (UTS), MPa 680 to 700
150
Tensile Strength: Yield (Proof), MPa 250 to 260
100

Thermal Properties

Latent Heat of Fusion, J/g 280
330
Maximum Temperature: Mechanical, °C 900
250
Melting Completion (Liquidus), °C 1400
640
Melting Onset (Solidus), °C 1360
570
Specific Heat Capacity, J/kg-K 480
970
Thermal Conductivity, W/m-K 15
100
Thermal Expansion, µm/m-K 16
27

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.4
24
Electrical Conductivity: Equal Weight (Specific), % IACS 2.7
110

Otherwise Unclassified Properties

Base Metal Price, % relative 13
25
Density, g/cm3 7.7
1.9
Embodied Carbon, kg CO2/kg material 2.7
25
Embodied Energy, MJ/kg 39
190
Embodied Water, L/kg 150
930

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 270 to 280
3.6
Resilience: Unit (Modulus of Resilience), kJ/m3 160 to 170
120
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
61
Strength to Weight: Axial, points 24 to 25
22
Strength to Weight: Bending, points 22 to 23
33
Thermal Diffusivity, mm2/s 4.0
54
Thermal Shock Resistance, points 15 to 16
9.2

Alloy Composition

Carbon (C), % 0 to 0.1
0
Chromium (Cr), % 16.5 to 18.5
0
Copper (Cu), % 1.0 to 2.5
0 to 0.1
Iron (Fe), % 62.7 to 72.5
0
Magnesium (Mg), % 0
91.5 to 95
Manganese (Mn), % 5.5 to 9.5
0
Nickel (Ni), % 4.5 to 5.5
0 to 0.010
Nitrogen (N), % 0 to 0.15
0
Phosphorus (P), % 0 to 0.070
0
Silicon (Si), % 0 to 1.0
0
Sulfur (S), % 0 to 0.010
0
Unspecified Rare Earths, % 0
2.5 to 4.0
Zinc (Zn), % 0
2.0 to 3.1
Zirconium (Zr), % 0
0.5 to 1.0
Residuals, % 0
0 to 0.3