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EN-MC21210 Magnesium vs. EN 1.4309 Stainless Steel

EN-MC21210 magnesium belongs to the magnesium alloys classification, while EN 1.4309 stainless steel belongs to the iron alloys. There are 30 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-MC21210 magnesium and the bottom bar is EN 1.4309 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 48
140
Elastic (Young's, Tensile) Modulus, GPa 44
200
Elongation at Break, % 14
34
Fatigue Strength, MPa 70
170
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 17
77
Tensile Strength: Ultimate (UTS), MPa 190
490
Tensile Strength: Yield (Proof), MPa 90
210

Thermal Properties

Latent Heat of Fusion, J/g 350
290
Maximum Temperature: Mechanical, °C 100
960
Melting Completion (Liquidus), °C 600
1420
Melting Onset (Solidus), °C 570
1380
Specific Heat Capacity, J/kg-K 1000
480
Thermal Conductivity, W/m-K 120
15
Thermal Expansion, µm/m-K 27
17

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 24
2.2
Electrical Conductivity: Equal Weight (Specific), % IACS 130
2.6

Otherwise Unclassified Properties

Base Metal Price, % relative 12
16
Density, g/cm3 1.6
7.8
Embodied Carbon, kg CO2/kg material 24
3.1
Embodied Energy, MJ/kg 160
45
Embodied Water, L/kg 980
150

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 22
140
Resilience: Unit (Modulus of Resilience), kJ/m3 92
110
Stiffness to Weight: Axial, points 15
14
Stiffness to Weight: Bending, points 72
25
Strength to Weight: Axial, points 32
18
Strength to Weight: Bending, points 44
18
Thermal Diffusivity, mm2/s 76
4.1
Thermal Shock Resistance, points 11
11

Alloy Composition


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Aluminum (Al), % 1.6 to 2.6
0
Carbon (C), % 0
0 to 0.030
Chromium (Cr), % 0
18 to 20
Copper (Cu), % 0 to 0.010
0
Iron (Fe), % 0 to 0.0050
64.2 to 73
Magnesium (Mg), % 96.3 to 98.3
0
Manganese (Mn), % 0.1 to 0.7
0 to 2.0
Nickel (Ni), % 0 to 0.0020
9.0 to 12
Nitrogen (N), % 0
0 to 0.2
Phosphorus (P), % 0
0 to 0.035
Silicon (Si), % 0 to 0.1
0 to 1.5
Sulfur (S), % 0
0 to 0.025
Zinc (Zn), % 0 to 0.2
0
Residuals, % 0 to 0.010
0