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AM60A Magnesium vs. SAE-AISI 9254 Steel

AM60A magnesium belongs to the magnesium alloys classification, while SAE-AISI 9254 steel belongs to the iron alloys. 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 AM60A magnesium and the bottom bar is SAE-AISI 9254 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 62
200
Elastic (Young's, Tensile) Modulus, GPa 45
190
Elongation at Break, % 8.8
20
Fatigue Strength, MPa 70
280
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 18
72
Shear Strength, MPa 130
410
Tensile Strength: Ultimate (UTS), MPa 230
660
Tensile Strength: Yield (Proof), MPa 130
410

Thermal Properties

Latent Heat of Fusion, J/g 350
270
Maximum Temperature: Mechanical, °C 120
410
Melting Completion (Liquidus), °C 620
1440
Melting Onset (Solidus), °C 550
1400
Specific Heat Capacity, J/kg-K 1000
480
Thermal Conductivity, W/m-K 62
46
Thermal Expansion, µm/m-K 26
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 13
7.4
Electrical Conductivity: Equal Weight (Specific), % IACS 69
8.6

Otherwise Unclassified Properties

Base Metal Price, % relative 12
2.2
Density, g/cm3 1.7
7.7
Embodied Carbon, kg CO2/kg material 23
1.5
Embodied Energy, MJ/kg 160
20
Embodied Water, L/kg 990
49

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 17
110
Resilience: Unit (Modulus of Resilience), kJ/m3 190
450
Stiffness to Weight: Axial, points 15
13
Stiffness to Weight: Bending, points 71
25
Strength to Weight: Axial, points 37
24
Strength to Weight: Bending, points 49
22
Thermal Diffusivity, mm2/s 37
12
Thermal Shock Resistance, points 14
20

Alloy Composition

Aluminum (Al), % 5.5 to 6.5
0
Carbon (C), % 0
0.51 to 0.59
Chromium (Cr), % 0
0.6 to 0.8
Copper (Cu), % 0 to 0.35
0
Iron (Fe), % 0
96.1 to 97.1
Magnesium (Mg), % 91.8 to 94.4
0
Manganese (Mn), % 0.13 to 0.6
0.6 to 0.8
Nickel (Ni), % 0 to 0.030
0
Phosphorus (P), % 0
0 to 0.035
Silicon (Si), % 0 to 0.5
1.2 to 1.6
Sulfur (S), % 0
0 to 0.040
Zinc (Zn), % 0 to 0.22
0