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AM60A Magnesium vs. SAE-AISI D4 Steel

AM60A magnesium belongs to the magnesium alloys classification, while SAE-AISI D4 steel belongs to the iron alloys. There are 28 material properties with values for both materials. Properties with values for just one material (4, 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 D4 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 45
190
Elongation at Break, % 8.8
8.4 to 15
Fatigue Strength, MPa 70
310 to 920
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 18
74
Shear Strength, MPa 130
460 to 1210
Tensile Strength: Ultimate (UTS), MPa 230
760 to 2060
Tensile Strength: Yield (Proof), MPa 130
470 to 1540

Thermal Properties

Latent Heat of Fusion, J/g 350
270
Melting Completion (Liquidus), °C 620
1430
Melting Onset (Solidus), °C 550
1380
Specific Heat Capacity, J/kg-K 1000
480
Thermal Conductivity, W/m-K 62
31
Thermal Expansion, µm/m-K 26
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 13
4.2
Electrical Conductivity: Equal Weight (Specific), % IACS 69
5.0

Otherwise Unclassified Properties

Base Metal Price, % relative 12
8.0
Density, g/cm3 1.7
7.7
Embodied Carbon, kg CO2/kg material 23
3.3
Embodied Energy, MJ/kg 160
49
Embodied Water, L/kg 990
100

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 17
100 to 160
Stiffness to Weight: Axial, points 15
14
Stiffness to Weight: Bending, points 71
25
Strength to Weight: Axial, points 37
27 to 75
Strength to Weight: Bending, points 49
24 to 47
Thermal Diffusivity, mm2/s 37
8.3
Thermal Shock Resistance, points 14
23 to 63

Alloy Composition

Aluminum (Al), % 5.5 to 6.5
0
Carbon (C), % 0
2.1 to 2.4
Chromium (Cr), % 0
11 to 13
Copper (Cu), % 0 to 0.35
0 to 0.25
Iron (Fe), % 0
80.6 to 86.3
Magnesium (Mg), % 91.8 to 94.4
0
Manganese (Mn), % 0.13 to 0.6
0 to 0.6
Molybdenum (Mo), % 0
0.7 to 1.2
Nickel (Ni), % 0 to 0.030
0 to 0.3
Phosphorus (P), % 0
0 to 0.030
Silicon (Si), % 0 to 0.5
0 to 0.6
Sulfur (S), % 0
0 to 0.030
Vanadium (V), % 0
0 to 1.0
Zinc (Zn), % 0 to 0.22
0