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EN-MC21320 Magnesium vs. EN 1.4307 Stainless Steel

EN-MC21320 magnesium belongs to the magnesium alloys classification, while EN 1.4307 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-MC21320 magnesium and the bottom bar is EN 1.4307 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 68
180 to 270
Elastic (Young's, Tensile) Modulus, GPa 45
200
Elongation at Break, % 7.5
14 to 46
Fatigue Strength, MPa 95
190 to 320
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 18
77
Shear Strength, MPa 130
410 to 550
Tensile Strength: Ultimate (UTS), MPa 230
590 to 900
Tensile Strength: Yield (Proof), MPa 140
200 to 570

Thermal Properties

Latent Heat of Fusion, J/g 370
290
Maximum Temperature: Mechanical, °C 110
940
Melting Completion (Liquidus), °C 600
1430
Melting Onset (Solidus), °C 530
1380
Specific Heat Capacity, J/kg-K 1000
480
Thermal Conductivity, W/m-K 66
15
Thermal Expansion, µm/m-K 26
16

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 17
2.4
Electrical Conductivity: Equal Weight (Specific), % IACS 91
2.7

Otherwise Unclassified Properties

Base Metal Price, % relative 12
15
Density, g/cm3 1.6
7.8
Embodied Carbon, kg CO2/kg material 23
3.0
Embodied Energy, MJ/kg 160
43
Embodied Water, L/kg 980
140

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 15
110 to 210
Resilience: Unit (Modulus of Resilience), kJ/m3 200
100 to 810
Stiffness to Weight: Axial, points 15
14
Stiffness to Weight: Bending, points 72
25
Strength to Weight: Axial, points 38
21 to 32
Strength to Weight: Bending, points 50
20 to 27
Thermal Diffusivity, mm2/s 40
4.0
Thermal Shock Resistance, points 13
13 to 20

Alloy Composition


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Aluminum (Al), % 3.5 to 5.0
0
Carbon (C), % 0
0 to 0.030
Chromium (Cr), % 0
17.5 to 19.5
Copper (Cu), % 0 to 0.010
0
Iron (Fe), % 0 to 0.0050
66.8 to 74.5
Magnesium (Mg), % 92.5 to 95.9
0
Manganese (Mn), % 0.1 to 0.7
0 to 2.0
Nickel (Ni), % 0 to 0.0020
8.0 to 10.5
Nitrogen (N), % 0
0 to 0.1
Phosphorus (P), % 0
0 to 0.045
Silicon (Si), % 0.5 to 1.5
0 to 1.0
Sulfur (S), % 0
0 to 0.015
Zinc (Zn), % 0 to 0.2
0
Residuals, % 0 to 0.010
0