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AM50A Magnesium vs. EN 1.4378 Stainless Steel

AM50A magnesium belongs to the magnesium alloys classification, while EN 1.4378 stainless steel belongs to the iron alloys. There are 27 material properties with values for both materials. Properties with values for just one material (6, 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 AM50A magnesium and the bottom bar is EN 1.4378 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 58
190 to 340
Elastic (Young's, Tensile) Modulus, GPa 45
200
Elongation at Break, % 11
14 to 34
Fatigue Strength, MPa 70
340 to 550
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 17
77
Shear Strength, MPa 120
510 to 680
Tensile Strength: Ultimate (UTS), MPa 210
760 to 1130
Tensile Strength: Yield (Proof), MPa 120
430 to 970

Thermal Properties

Latent Heat of Fusion, J/g 350
290
Maximum Temperature: Mechanical, °C 120
910
Melting Completion (Liquidus), °C 620
1390
Melting Onset (Solidus), °C 570
1350
Specific Heat Capacity, J/kg-K 1000
480
Thermal Expansion, µm/m-K 26
17

Otherwise Unclassified Properties

Base Metal Price, % relative 12
12
Density, g/cm3 1.7
7.6
Embodied Carbon, kg CO2/kg material 23
2.7
Embodied Energy, MJ/kg 160
39
Embodied Water, L/kg 990
150

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 19
150 to 220
Resilience: Unit (Modulus of Resilience), kJ/m3 150
470 to 2370
Stiffness to Weight: Axial, points 15
14
Stiffness to Weight: Bending, points 71
25
Strength to Weight: Axial, points 35
28 to 41
Strength to Weight: Bending, points 47
24 to 31
Thermal Shock Resistance, points 13
16 to 23

Alloy Composition

Aluminum (Al), % 4.4 to 5.4
0
Carbon (C), % 0
0 to 0.080
Chromium (Cr), % 0
17 to 19
Copper (Cu), % 0 to 0.010
0
Iron (Fe), % 0 to 0.0040
61.2 to 69
Magnesium (Mg), % 93.7 to 95.3
0
Manganese (Mn), % 0.26 to 0.6
11.5 to 14.5
Nickel (Ni), % 0 to 0.0020
2.3 to 3.7
Nitrogen (N), % 0
0.2 to 0.4
Phosphorus (P), % 0
0 to 0.060
Silicon (Si), % 0 to 0.1
0 to 1.0
Sulfur (S), % 0
0 to 0.030
Zinc (Zn), % 0 to 0.22
0