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EN-MC32110 Magnesium vs. AISI 309H Stainless Steel

EN-MC32110 magnesium belongs to the magnesium alloys classification, while AISI 309H stainless steel belongs to the iron 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 EN-MC32110 magnesium and the bottom bar is AISI 309H stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 60
190
Elastic (Young's, Tensile) Modulus, GPa 49
200
Elongation at Break, % 2.2
40
Fatigue Strength, MPa 80
200
Poisson's Ratio 0.29
0.27
Shear Modulus, GPa 19
78
Shear Strength, MPa 120
400
Tensile Strength: Ultimate (UTS), MPa 220
580
Tensile Strength: Yield (Proof), MPa 140
230

Thermal Properties

Latent Heat of Fusion, J/g 330
290
Maximum Temperature: Mechanical, °C 99
1080
Melting Completion (Liquidus), °C 600
1420
Melting Onset (Solidus), °C 500
1370
Specific Heat Capacity, J/kg-K 950
480
Thermal Conductivity, W/m-K 120
15
Thermal Expansion, µm/m-K 26
16

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 32
2.2
Electrical Conductivity: Equal Weight (Specific), % IACS 140
2.5

Otherwise Unclassified Properties

Base Metal Price, % relative 13
19
Density, g/cm3 2.1
7.8
Embodied Carbon, kg CO2/kg material 22
3.6
Embodied Energy, MJ/kg 150
51
Embodied Water, L/kg 920
170

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 4.3
190
Resilience: Unit (Modulus of Resilience), kJ/m3 210
130
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 58
25
Strength to Weight: Axial, points 29
21
Strength to Weight: Bending, points 38
20
Thermal Diffusivity, mm2/s 58
4.0
Thermal Shock Resistance, points 12
13

Alloy Composition


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Aluminum (Al), % 0 to 0.2
0
Carbon (C), % 0
0.040 to 0.1
Chromium (Cr), % 0
22 to 24
Copper (Cu), % 2.4 to 3.0
0
Iron (Fe), % 0 to 0.050
58.1 to 66
Magnesium (Mg), % 89.3 to 91.9
0
Manganese (Mn), % 0.25 to 0.75
0 to 2.0
Nickel (Ni), % 0 to 0.010
12 to 15
Phosphorus (P), % 0
0 to 0.045
Silicon (Si), % 0 to 0.2
0 to 0.75
Sulfur (S), % 0
0 to 0.030
Zinc (Zn), % 5.5 to 6.5
0
Residuals, % 0 to 0.010
0