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EN-MC95310 Magnesium vs. S32803 Stainless Steel

EN-MC95310 magnesium belongs to the magnesium alloys classification, while S32803 stainless steel belongs to the iron alloys. There are 31 material properties with values for both materials. Properties with values for just one material (3, 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 S32803 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 85
210
Elastic (Young's, Tensile) Modulus, GPa 45
210
Elongation at Break, % 2.2
18
Fatigue Strength, MPa 110
350
Poisson's Ratio 0.29
0.27
Shear Modulus, GPa 17
81
Shear Strength, MPa 160
420
Tensile Strength: Ultimate (UTS), MPa 280
680
Tensile Strength: Yield (Proof), MPa 190
560

Thermal Properties

Latent Heat of Fusion, J/g 330
300
Maximum Temperature: Mechanical, °C 170
1100
Melting Completion (Liquidus), °C 650
1450
Melting Onset (Solidus), °C 540
1400
Specific Heat Capacity, J/kg-K 960
480
Thermal Conductivity, W/m-K 51
16
Thermal Expansion, µm/m-K 25
11

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 11
2.3
Electrical Conductivity: Equal Weight (Specific), % IACS 50
2.6

Otherwise Unclassified Properties

Base Metal Price, % relative 34
19
Density, g/cm3 1.9
7.7
Embodied Carbon, kg CO2/kg material 29
3.7
Embodied Energy, MJ/kg 260
53
Embodied Water, L/kg 900
180

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 5.6
120
Resilience: Unit (Modulus of Resilience), kJ/m3 420
760
Stiffness to Weight: Axial, points 13
15
Stiffness to Weight: Bending, points 61
25
Strength to Weight: Axial, points 40
25
Strength to Weight: Bending, points 49
22
Thermal Diffusivity, mm2/s 28
4.4
Thermal Shock Resistance, points 18
22

Alloy Composition


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Carbon (C), % 0
0 to 0.015
Chromium (Cr), % 0
28 to 29
Copper (Cu), % 0 to 0.030
0
Iron (Fe), % 0 to 0.010
62.9 to 67.1
Lithium (Li), % 0 to 0.2
0
Magnesium (Mg), % 88.9 to 93.4
0
Manganese (Mn), % 0 to 0.15
0 to 0.5
Molybdenum (Mo), % 0
1.8 to 2.5
Nickel (Ni), % 0 to 0.0050
3.0 to 4.0
Niobium (Nb), % 0
0.15 to 0.5
Nitrogen (N), % 0
0 to 0.020
Phosphorus (P), % 0
0 to 0.020
Silicon (Si), % 0 to 0.010
0 to 0.55
Sulfur (S), % 0
0 to 0.0035
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