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AM50A Magnesium vs. S42035 Stainless Steel

AM50A magnesium belongs to the magnesium alloys classification, while S42035 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 S42035 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 58
160
Elastic (Young's, Tensile) Modulus, GPa 45
200
Elongation at Break, % 11
18
Fatigue Strength, MPa 70
260
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 17
77
Shear Strength, MPa 120
390
Tensile Strength: Ultimate (UTS), MPa 210
630
Tensile Strength: Yield (Proof), MPa 120
430

Thermal Properties

Latent Heat of Fusion, J/g 350
280
Maximum Temperature: Mechanical, °C 120
810
Melting Completion (Liquidus), °C 620
1450
Melting Onset (Solidus), °C 570
1400
Specific Heat Capacity, J/kg-K 1000
480
Thermal Conductivity, W/m-K 65
27
Thermal Expansion, µm/m-K 26
10

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 16
2.7
Electrical Conductivity: Equal Weight (Specific), % IACS 88
3.2

Otherwise Unclassified Properties

Base Metal Price, % relative 12
9.5
Density, g/cm3 1.7
7.8
Embodied Carbon, kg CO2/kg material 23
2.4
Embodied Energy, MJ/kg 160
34
Embodied Water, L/kg 990
110

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 19
100
Resilience: Unit (Modulus of Resilience), kJ/m3 150
460
Stiffness to Weight: Axial, points 15
14
Stiffness to Weight: Bending, points 71
25
Strength to Weight: Axial, points 35
22
Strength to Weight: Bending, points 47
21
Thermal Diffusivity, mm2/s 39
7.2
Thermal Shock Resistance, points 13
22

Alloy Composition

Aluminum (Al), % 4.4 to 5.4
0
Carbon (C), % 0
0 to 0.080
Chromium (Cr), % 0
13.5 to 15.5
Copper (Cu), % 0 to 0.010
0
Iron (Fe), % 0 to 0.0040
78.1 to 85
Magnesium (Mg), % 93.7 to 95.3
0
Manganese (Mn), % 0.26 to 0.6
0 to 1.0
Molybdenum (Mo), % 0
0.2 to 1.2
Nickel (Ni), % 0 to 0.0020
1.0 to 2.5
Phosphorus (P), % 0
0 to 0.045
Silicon (Si), % 0 to 0.1
0 to 1.0
Sulfur (S), % 0
0 to 0.030
Titanium (Ti), % 0
0.3 to 0.5
Zinc (Zn), % 0 to 0.22
0