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AISI 304LN Stainless Steel vs. EZ33A Magnesium

AISI 304LN 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 (4, 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 304LN stainless steel and the bottom bar is EZ33A magnesium.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 190 to 350
55
Elastic (Young's, Tensile) Modulus, GPa 200
44
Elongation at Break, % 7.8 to 46
2.6
Fatigue Strength, MPa 200 to 440
70
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 77
17
Shear Strength, MPa 400 to 680
140
Tensile Strength: Ultimate (UTS), MPa 580 to 1160
150
Tensile Strength: Yield (Proof), MPa 230 to 870
100

Thermal Properties

Latent Heat of Fusion, J/g 290
330
Maximum Temperature: Mechanical, °C 960
250
Melting Completion (Liquidus), °C 1420
640
Melting Onset (Solidus), °C 1380
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 16
25
Density, g/cm3 7.8
1.9
Embodied Carbon, kg CO2/kg material 3.1
25
Embodied Energy, MJ/kg 44
190
Embodied Water, L/kg 150
930

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 83 to 270
3.6
Resilience: Unit (Modulus of Resilience), kJ/m3 140 to 1900
120
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
61
Strength to Weight: Axial, points 21 to 41
22
Strength to Weight: Bending, points 20 to 31
33
Thermal Diffusivity, mm2/s 4.0
54
Thermal Shock Resistance, points 13 to 26
9.2

Alloy Composition

Carbon (C), % 0 to 0.030
0
Chromium (Cr), % 18 to 20
0
Copper (Cu), % 0
0 to 0.1
Iron (Fe), % 65 to 73.9
0
Magnesium (Mg), % 0
91.5 to 95
Manganese (Mn), % 0 to 2.0
0
Nickel (Ni), % 8.0 to 12
0 to 0.010
Nitrogen (N), % 0.1 to 0.16
0
Phosphorus (P), % 0 to 0.045
0
Silicon (Si), % 0 to 0.75
0
Sulfur (S), % 0 to 0.030
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