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EN-MC35110 Magnesium vs. S39274 Stainless Steel

EN-MC35110 magnesium belongs to the magnesium alloys classification, while S39274 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-MC35110 magnesium and the bottom bar is S39274 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 63
270
Elastic (Young's, Tensile) Modulus, GPa 45
210
Elongation at Break, % 3.1
17
Fatigue Strength, MPa 110
380
Poisson's Ratio 0.29
0.27
Shear Modulus, GPa 18
81
Shear Strength, MPa 130
560
Tensile Strength: Ultimate (UTS), MPa 230
900
Tensile Strength: Yield (Proof), MPa 150
620

Thermal Properties

Latent Heat of Fusion, J/g 330
300
Maximum Temperature: Mechanical, °C 140
1100
Melting Completion (Liquidus), °C 600
1480
Melting Onset (Solidus), °C 520
1430
Specific Heat Capacity, J/kg-K 970
470
Thermal Conductivity, W/m-K 110
16
Thermal Expansion, µm/m-K 26
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 27
2.2
Electrical Conductivity: Equal Weight (Specific), % IACS 130
2.4

Otherwise Unclassified Properties

Base Metal Price, % relative 18
24
Density, g/cm3 1.9
8.0
Embodied Carbon, kg CO2/kg material 24
4.3
Embodied Energy, MJ/kg 170
60
Embodied Water, L/kg 940
180

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 6.3
140
Resilience: Unit (Modulus of Resilience), kJ/m3 260
940
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 63
25
Strength to Weight: Axial, points 34
32
Strength to Weight: Bending, points 44
26
Thermal Diffusivity, mm2/s 61
4.2
Thermal Shock Resistance, points 14
25

Alloy Composition


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Carbon (C), % 0
0 to 0.030
Chromium (Cr), % 0
24 to 26
Copper (Cu), % 0 to 0.030
0.2 to 0.8
Iron (Fe), % 0 to 0.010
57 to 65.6
Magnesium (Mg), % 92 to 95.4
0
Manganese (Mn), % 0 to 0.15
0 to 1.0
Molybdenum (Mo), % 0
2.5 to 3.5
Nickel (Ni), % 0 to 0.0050
6.0 to 8.0
Nitrogen (N), % 0
0.24 to 0.32
Phosphorus (P), % 0
0 to 0.030
Silicon (Si), % 0 to 0.010
0 to 0.8
Sulfur (S), % 0
0 to 0.020
Tungsten (W), % 0
1.5 to 2.5
Unspecified Rare Earths, % 0.75 to 1.8
0
Zinc (Zn), % 3.5 to 5.0
0
Zirconium (Zr), % 0.4 to 1.0
0
Residuals, % 0 to 0.010
0