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EN-MC65210 Magnesium vs. AISI 431 Stainless Steel

EN-MC65210 magnesium belongs to the magnesium alloys classification, while AISI 431 stainless steel belongs to the iron alloys. There are 29 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-MC65210 magnesium and the bottom bar is AISI 431 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 80
250
Elastic (Young's, Tensile) Modulus, GPa 44
200
Elongation at Break, % 2.8
15 to 17
Fatigue Strength, MPa 110
430 to 610
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 17
77
Shear Strength, MPa 150
550 to 840
Tensile Strength: Ultimate (UTS), MPa 270
890 to 1380
Tensile Strength: Yield (Proof), MPa 200
710 to 1040

Thermal Properties

Latent Heat of Fusion, J/g 340
280
Maximum Temperature: Mechanical, °C 170
850
Melting Completion (Liquidus), °C 610
1510
Melting Onset (Solidus), °C 540
1450
Specific Heat Capacity, J/kg-K 970
480
Thermal Conductivity, W/m-K 110
26
Thermal Expansion, µm/m-K 26
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 25
2.6
Electrical Conductivity: Equal Weight (Specific), % IACS 110
3.0

Otherwise Unclassified Properties

Density, g/cm3 2.0
7.7
Embodied Carbon, kg CO2/kg material 27
2.2
Embodied Energy, MJ/kg 220
31

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 6.9
140 to 180
Resilience: Unit (Modulus of Resilience), kJ/m3 450
1270 to 2770
Stiffness to Weight: Axial, points 12
14
Stiffness to Weight: Bending, points 59
25
Strength to Weight: Axial, points 38
32 to 50
Strength to Weight: Bending, points 47
27 to 36
Thermal Diffusivity, mm2/s 58
7.0
Thermal Shock Resistance, points 17
28 to 43

Alloy Composition


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Carbon (C), % 0
0 to 0.2
Chromium (Cr), % 0
15 to 17
Copper (Cu), % 0 to 0.030
0
Iron (Fe), % 0 to 0.010
78.2 to 83.8
Magnesium (Mg), % 92.6 to 95.6
0
Manganese (Mn), % 0 to 0.15
0 to 1.0
Nickel (Ni), % 0 to 0.0050
1.3 to 2.5
Phosphorus (P), % 0
0 to 0.040
Silicon (Si), % 0 to 0.010
0 to 1.0
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