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AM50A Magnesium vs. SAE-AISI 1065 Steel

AM50A magnesium belongs to the magnesium alloys classification, while SAE-AISI 1065 steel belongs to the iron alloys. There are 31 material properties with values for both materials. Properties with values for just one material (1, 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 SAE-AISI 1065 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 58
210 to 230
Elastic (Young's, Tensile) Modulus, GPa 45
190
Elongation at Break, % 11
11 to 14
Fatigue Strength, MPa 70
270 to 340
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 17
72
Shear Strength, MPa 120
430 to 470
Tensile Strength: Ultimate (UTS), MPa 210
710 to 780
Tensile Strength: Yield (Proof), MPa 120
430 to 550

Thermal Properties

Latent Heat of Fusion, J/g 350
250
Maximum Temperature: Mechanical, °C 120
400
Melting Completion (Liquidus), °C 620
1460
Melting Onset (Solidus), °C 570
1420
Specific Heat Capacity, J/kg-K 1000
470
Thermal Conductivity, W/m-K 65
51
Thermal Expansion, µm/m-K 26
11

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 16
11
Electrical Conductivity: Equal Weight (Specific), % IACS 88
12

Otherwise Unclassified Properties

Base Metal Price, % relative 12
1.8
Density, g/cm3 1.7
7.8
Embodied Carbon, kg CO2/kg material 23
1.4
Embodied Energy, MJ/kg 160
19
Embodied Water, L/kg 990
46

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 19
74 to 90
Resilience: Unit (Modulus of Resilience), kJ/m3 150
490 to 820
Stiffness to Weight: Axial, points 15
13
Stiffness to Weight: Bending, points 71
24
Strength to Weight: Axial, points 35
25 to 28
Strength to Weight: Bending, points 47
23 to 24
Thermal Diffusivity, mm2/s 39
14
Thermal Shock Resistance, points 13
25 to 27

Alloy Composition

Aluminum (Al), % 4.4 to 5.4
0
Carbon (C), % 0
0.6 to 0.7
Copper (Cu), % 0 to 0.010
0
Iron (Fe), % 0 to 0.0040
98.3 to 98.8
Magnesium (Mg), % 93.7 to 95.3
0
Manganese (Mn), % 0.26 to 0.6
0.6 to 0.9
Nickel (Ni), % 0 to 0.0020
0
Phosphorus (P), % 0
0 to 0.040
Silicon (Si), % 0 to 0.1
0
Sulfur (S), % 0
0 to 0.050
Zinc (Zn), % 0 to 0.22
0