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EN-MC65210 Magnesium vs. AISI 309H Stainless Steel

EN-MC65210 magnesium belongs to the magnesium alloys classification, while AISI 309H stainless steel belongs to the iron alloys. There are 29 material properties with values for both materials. Properties with values for just one material (6, 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-MC65210 magnesium and the bottom bar is AISI 309H stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 80
190
Elastic (Young's, Tensile) Modulus, GPa 44
200
Elongation at Break, % 2.8
40
Fatigue Strength, MPa 110
200
Poisson's Ratio 0.29
0.27
Shear Modulus, GPa 17
78
Shear Strength, MPa 150
400
Tensile Strength: Ultimate (UTS), MPa 270
580
Tensile Strength: Yield (Proof), MPa 200
230

Thermal Properties

Latent Heat of Fusion, J/g 340
290
Maximum Temperature: Mechanical, °C 170
1080
Melting Completion (Liquidus), °C 610
1420
Melting Onset (Solidus), °C 540
1370
Specific Heat Capacity, J/kg-K 970
480
Thermal Conductivity, W/m-K 110
15
Thermal Expansion, µm/m-K 26
16

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 25
2.2
Electrical Conductivity: Equal Weight (Specific), % IACS 110
2.5

Otherwise Unclassified Properties

Density, g/cm3 2.0
7.8
Embodied Carbon, kg CO2/kg material 27
3.6
Embodied Energy, MJ/kg 220
51

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 6.9
190
Resilience: Unit (Modulus of Resilience), kJ/m3 450
130
Stiffness to Weight: Axial, points 12
14
Stiffness to Weight: Bending, points 59
25
Strength to Weight: Axial, points 38
21
Strength to Weight: Bending, points 47
20
Thermal Diffusivity, mm2/s 58
4.0
Thermal Shock Resistance, points 17
13

Alloy Composition

Carbon (C), % 0
0.040 to 0.1
Chromium (Cr), % 0
22 to 24
Copper (Cu), % 0 to 0.030
0
Iron (Fe), % 0 to 0.010
58.1 to 66
Magnesium (Mg), % 92.6 to 95.6
0
Manganese (Mn), % 0 to 0.15
0 to 2.0
Nickel (Ni), % 0 to 0.0050
12 to 15
Phosphorus (P), % 0
0 to 0.045
Silicon (Si), % 0 to 0.010
0 to 0.75
Silver (Ag), % 2.0 to 3.0
0
Sulfur (S), % 0
0 to 0.030
Unspecified Rare Earths, % 2.0 to 3.0
0
Zinc (Zn), % 0 to 0.2
0
Zirconium (Zr), % 0.4 to 1.0
0
Residuals, % 0 to 0.010
0