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AM60A Magnesium vs. SAE-AISI M30 Steel

AM60A magnesium belongs to the magnesium alloys classification, while SAE-AISI M30 steel belongs to the iron alloys. There are 21 material properties with values for both materials. Properties with values for just one material (11, 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 AM60A magnesium and the bottom bar is SAE-AISI M30 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 45
200
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 18
78
Tensile Strength: Ultimate (UTS), MPa 230
800 to 2170

Thermal Properties

Latent Heat of Fusion, J/g 350
270
Melting Completion (Liquidus), °C 620
1550
Melting Onset (Solidus), °C 550
1500
Specific Heat Capacity, J/kg-K 1000
450
Thermal Conductivity, W/m-K 62
24
Thermal Expansion, µm/m-K 26
12

Otherwise Unclassified Properties

Base Metal Price, % relative 12
26
Density, g/cm3 1.7
8.2
Embodied Carbon, kg CO2/kg material 23
7.2
Embodied Energy, MJ/kg 160
100
Embodied Water, L/kg 990
120

Common Calculations

Stiffness to Weight: Axial, points 15
14
Stiffness to Weight: Bending, points 71
24
Strength to Weight: Axial, points 37
27 to 74
Strength to Weight: Bending, points 49
24 to 46
Thermal Diffusivity, mm2/s 37
6.6
Thermal Shock Resistance, points 14
25 to 67

Alloy Composition

Aluminum (Al), % 5.5 to 6.5
0
Carbon (C), % 0
0.75 to 0.85
Chromium (Cr), % 0
3.5 to 4.3
Cobalt (Co), % 0
4.5 to 5.5
Copper (Cu), % 0 to 0.35
0 to 0.25
Iron (Fe), % 0
75.2 to 80.9
Magnesium (Mg), % 91.8 to 94.4
0
Manganese (Mn), % 0.13 to 0.6
0.15 to 0.4
Molybdenum (Mo), % 0
7.8 to 9.0
Nickel (Ni), % 0 to 0.030
0 to 0.3
Phosphorus (P), % 0
0 to 0.030
Silicon (Si), % 0 to 0.5
0.2 to 0.45
Sulfur (S), % 0
0 to 0.030
Tungsten (W), % 0
1.3 to 2.3
Vanadium (V), % 0
1.0 to 1.4
Zinc (Zn), % 0 to 0.22
0