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AM50A Magnesium vs. EN 1.4618 Stainless Steel

AM50A magnesium belongs to the magnesium alloys classification, while EN 1.4618 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 AM50A magnesium and the bottom bar is EN 1.4618 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 58
200 to 210
Elastic (Young's, Tensile) Modulus, GPa 45
200
Elongation at Break, % 11
51
Fatigue Strength, MPa 70
240 to 250
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 17
77
Shear Strength, MPa 120
480 to 500
Tensile Strength: Ultimate (UTS), MPa 210
680 to 700
Tensile Strength: Yield (Proof), MPa 120
250 to 260

Thermal Properties

Latent Heat of Fusion, J/g 350
280
Maximum Temperature: Mechanical, °C 120
900
Melting Completion (Liquidus), °C 620
1400
Melting Onset (Solidus), °C 570
1360
Specific Heat Capacity, J/kg-K 1000
480
Thermal Conductivity, W/m-K 65
15
Thermal Expansion, µm/m-K 26
16

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 16
2.4
Electrical Conductivity: Equal Weight (Specific), % IACS 88
2.7

Otherwise Unclassified Properties

Base Metal Price, % relative 12
13
Density, g/cm3 1.7
7.7
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
270 to 280
Resilience: Unit (Modulus of Resilience), kJ/m3 150
160 to 170
Stiffness to Weight: Axial, points 15
14
Stiffness to Weight: Bending, points 71
25
Strength to Weight: Axial, points 35
24 to 25
Strength to Weight: Bending, points 47
22 to 23
Thermal Diffusivity, mm2/s 39
4.0
Thermal Shock Resistance, points 13
15 to 16

Alloy Composition

Aluminum (Al), % 4.4 to 5.4
0
Carbon (C), % 0
0 to 0.1
Chromium (Cr), % 0
16.5 to 18.5
Copper (Cu), % 0 to 0.010
1.0 to 2.5
Iron (Fe), % 0 to 0.0040
62.7 to 72.5
Magnesium (Mg), % 93.7 to 95.3
0
Manganese (Mn), % 0.26 to 0.6
5.5 to 9.5
Nickel (Ni), % 0 to 0.0020
4.5 to 5.5
Nitrogen (N), % 0
0 to 0.15
Phosphorus (P), % 0
0 to 0.070
Silicon (Si), % 0 to 0.1
0 to 1.0
Sulfur (S), % 0
0 to 0.010
Zinc (Zn), % 0 to 0.22
0