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EN-MC95310 Magnesium vs. AISI 440A Stainless Steel

EN-MC95310 magnesium belongs to the magnesium alloys classification, while AISI 440A stainless steel belongs to the iron alloys. There are 29 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-MC95310 magnesium and the bottom bar is AISI 440A stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 45
200
Elongation at Break, % 2.2
5.0 to 20
Fatigue Strength, MPa 110
270 to 790
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 17
77
Shear Strength, MPa 160
450 to 1040
Tensile Strength: Ultimate (UTS), MPa 280
730 to 1790
Tensile Strength: Yield (Proof), MPa 190
420 to 1650

Thermal Properties

Latent Heat of Fusion, J/g 330
280
Maximum Temperature: Mechanical, °C 170
760
Melting Completion (Liquidus), °C 650
1480
Melting Onset (Solidus), °C 540
1370
Specific Heat Capacity, J/kg-K 960
480
Thermal Conductivity, W/m-K 51
23
Thermal Expansion, µm/m-K 25
10

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 11
2.5
Electrical Conductivity: Equal Weight (Specific), % IACS 50
2.9

Otherwise Unclassified Properties

Base Metal Price, % relative 34
9.0
Density, g/cm3 1.9
7.7
Embodied Carbon, kg CO2/kg material 29
2.2
Embodied Energy, MJ/kg 260
31
Embodied Water, L/kg 900
120

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 5.6
87 to 120
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 61
25
Strength to Weight: Axial, points 40
26 to 65
Strength to Weight: Bending, points 49
23 to 43
Thermal Diffusivity, mm2/s 28
6.2
Thermal Shock Resistance, points 18
26 to 65

Alloy Composition


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Carbon (C), % 0
0.6 to 0.75
Chromium (Cr), % 0
16 to 18
Copper (Cu), % 0 to 0.030
0
Iron (Fe), % 0 to 0.010
78.4 to 83.4
Lithium (Li), % 0 to 0.2
0
Magnesium (Mg), % 88.9 to 93.4
0
Manganese (Mn), % 0 to 0.15
0 to 1.0
Molybdenum (Mo), % 0
0 to 0.75
Nickel (Ni), % 0 to 0.0050
0
Phosphorus (P), % 0
0 to 0.040
Silicon (Si), % 0 to 0.010
0 to 1.0
Sulfur (S), % 0
0 to 0.015
Unspecified Rare Earths, % 1.5 to 4.0
0
Yttrium (Y), % 4.8 to 5.5
0
Zinc (Zn), % 0 to 0.2
0
Zirconium (Zr), % 0.4 to 1.0
0
Residuals, % 0 to 0.010
0