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EN-MC21320 Magnesium vs. S17600 Stainless Steel

EN-MC21320 magnesium belongs to the magnesium alloys classification, while S17600 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-MC21320 magnesium and the bottom bar is S17600 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 68
270 to 410
Elastic (Young's, Tensile) Modulus, GPa 45
200
Elongation at Break, % 7.5
8.6 to 11
Fatigue Strength, MPa 95
300 to 680
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 18
76
Shear Strength, MPa 130
560 to 880
Tensile Strength: Ultimate (UTS), MPa 230
940 to 1490
Tensile Strength: Yield (Proof), MPa 140
580 to 1310

Thermal Properties

Latent Heat of Fusion, J/g 370
290
Maximum Temperature: Mechanical, °C 110
890
Melting Completion (Liquidus), °C 600
1430
Melting Onset (Solidus), °C 530
1390
Specific Heat Capacity, J/kg-K 1000
480
Thermal Conductivity, W/m-K 66
15
Thermal Expansion, µm/m-K 26
11

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 17
2.3
Electrical Conductivity: Equal Weight (Specific), % IACS 91
2.7

Otherwise Unclassified Properties

Base Metal Price, % relative 12
13
Density, g/cm3 1.6
7.8
Embodied Carbon, kg CO2/kg material 23
2.9
Embodied Energy, MJ/kg 160
42
Embodied Water, L/kg 980
130

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 15
70 to 150
Resilience: Unit (Modulus of Resilience), kJ/m3 200
850 to 4390
Stiffness to Weight: Axial, points 15
14
Stiffness to Weight: Bending, points 72
25
Strength to Weight: Axial, points 38
34 to 54
Strength to Weight: Bending, points 50
28 to 37
Thermal Diffusivity, mm2/s 40
4.1
Thermal Shock Resistance, points 13
31 to 50

Alloy Composition


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Aluminum (Al), % 3.5 to 5.0
0 to 0.4
Carbon (C), % 0
0 to 0.080
Chromium (Cr), % 0
16 to 17.5
Copper (Cu), % 0 to 0.010
0
Iron (Fe), % 0 to 0.0050
71.3 to 77.6
Magnesium (Mg), % 92.5 to 95.9
0
Manganese (Mn), % 0.1 to 0.7
0 to 1.0
Nickel (Ni), % 0 to 0.0020
6.0 to 7.5
Phosphorus (P), % 0
0 to 0.040
Silicon (Si), % 0.5 to 1.5
0 to 1.0
Sulfur (S), % 0
0 to 0.030
Titanium (Ti), % 0
0.4 to 1.2
Zinc (Zn), % 0 to 0.2
0
Residuals, % 0 to 0.010
0