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EZ33A Magnesium vs. N08031 Stainless Steel

EZ33A magnesium belongs to the magnesium alloys classification, while N08031 stainless steel belongs to the iron alloys. There are 28 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 N08031 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 44
210
Elongation at Break, % 2.6
45
Fatigue Strength, MPa 70
290
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 17
81
Shear Strength, MPa 140
510
Tensile Strength: Ultimate (UTS), MPa 150
730
Tensile Strength: Yield (Proof), MPa 100
310

Thermal Properties

Latent Heat of Fusion, J/g 330
310
Maximum Temperature: Mechanical, °C 250
1100
Melting Completion (Liquidus), °C 640
1440
Melting Onset (Solidus), °C 570
1390
Specific Heat Capacity, J/kg-K 970
460
Thermal Conductivity, W/m-K 100
12
Thermal Expansion, µm/m-K 27
18

Otherwise Unclassified Properties

Base Metal Price, % relative 25
39
Density, g/cm3 1.9
8.1
Embodied Carbon, kg CO2/kg material 25
7.1
Embodied Energy, MJ/kg 190
96
Embodied Water, L/kg 930
240

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 3.6
270
Resilience: Unit (Modulus of Resilience), kJ/m3 120
230
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 61
24
Strength to Weight: Axial, points 22
25
Strength to Weight: Bending, points 33
22
Thermal Diffusivity, mm2/s 54
3.1
Thermal Shock Resistance, points 9.2
14

Alloy Composition

Carbon (C), % 0
0 to 0.015
Chromium (Cr), % 0
26 to 28
Copper (Cu), % 0 to 0.1
1.0 to 1.4
Iron (Fe), % 0
29 to 36.9
Magnesium (Mg), % 91.5 to 95
0
Manganese (Mn), % 0
0 to 2.0
Molybdenum (Mo), % 0
6.0 to 7.0
Nickel (Ni), % 0 to 0.010
30 to 32
Nitrogen (N), % 0
0.15 to 0.25
Phosphorus (P), % 0
0 to 0.020
Silicon (Si), % 0
0 to 0.3
Sulfur (S), % 0
0 to 0.010
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