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EN-MC21320 Magnesium vs. EN 1.3956 Stainless Steel

EN-MC21320 magnesium belongs to the magnesium alloys classification, while EN 1.3956 stainless steel belongs to the iron alloys. There are 25 material properties with values for both materials. Properties with values for just one material (8, 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 1.3956 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 45
200
Elongation at Break, % 7.5
27
Fatigue Strength, MPa 95
240
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 18
79
Tensile Strength: Ultimate (UTS), MPa 230
650
Tensile Strength: Yield (Proof), MPa 140
330

Thermal Properties

Latent Heat of Fusion, J/g 370
300
Maximum Temperature: Mechanical, °C 110
1080
Melting Completion (Liquidus), °C 600
1420
Melting Onset (Solidus), °C 530
1380
Specific Heat Capacity, J/kg-K 1000
480
Thermal Expansion, µm/m-K 26
13

Otherwise Unclassified Properties

Base Metal Price, % relative 12
22
Density, g/cm3 1.6
7.8
Embodied Carbon, kg CO2/kg material 23
4.8
Embodied Energy, MJ/kg 160
68
Embodied Water, L/kg 980
180

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 15
150
Resilience: Unit (Modulus of Resilience), kJ/m3 200
270
Stiffness to Weight: Axial, points 15
14
Stiffness to Weight: Bending, points 72
25
Strength to Weight: Axial, points 38
23
Strength to Weight: Bending, points 50
21
Thermal Shock Resistance, points 13
18

Alloy Composition


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Aluminum (Al), % 3.5 to 5.0
0
Carbon (C), % 0
0 to 0.060
Chromium (Cr), % 0
20.5 to 23.5
Copper (Cu), % 0 to 0.010
0
Iron (Fe), % 0 to 0.0050
51.9 to 62.1
Magnesium (Mg), % 92.5 to 95.9
0
Manganese (Mn), % 0.1 to 0.7
4.0 to 6.0
Molybdenum (Mo), % 0
1.5 to 3.0
Nickel (Ni), % 0 to 0.0020
11.5 to 13.5
Niobium (Nb), % 0
0.1 to 0.3
Nitrogen (N), % 0
0.2 to 0.4
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
Vanadium (V), % 0
0.1 to 0.3
Zinc (Zn), % 0 to 0.2
0
Residuals, % 0 to 0.010
0