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AS41B Magnesium vs. ASTM Grade LC2-1 Steel

AS41B magnesium belongs to the magnesium alloys classification, while ASTM grade LC2-1 steel belongs to the iron alloys. There are 29 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 AS41B magnesium and the bottom bar is ASTM grade LC2-1 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 45
190
Elongation at Break, % 6.0
20
Fatigue Strength, MPa 97
430
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 18
73
Tensile Strength: Ultimate (UTS), MPa 210
810
Tensile Strength: Yield (Proof), MPa 140
630

Thermal Properties

Latent Heat of Fusion, J/g 370
260
Maximum Temperature: Mechanical, °C 110
450
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 68
46
Thermal Expansion, µm/m-K 26
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 17
8.0
Electrical Conductivity: Equal Weight (Specific), % IACS 92
9.1

Otherwise Unclassified Properties

Base Metal Price, % relative 12
5.0
Density, g/cm3 1.7
7.9
Embodied Carbon, kg CO2/kg material 23
1.9
Embodied Energy, MJ/kg 160
25
Embodied Water, L/kg 980
60

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 11
150
Resilience: Unit (Modulus of Resilience), kJ/m3 220
1040
Stiffness to Weight: Axial, points 15
13
Stiffness to Weight: Bending, points 72
24
Strength to Weight: Axial, points 35
29
Strength to Weight: Bending, points 47
25
Thermal Diffusivity, mm2/s 41
12
Thermal Shock Resistance, points 13
24

Alloy Composition

Aluminum (Al), % 3.5 to 5.0
0
Carbon (C), % 0
0 to 0.22
Chromium (Cr), % 0
1.4 to 1.9
Copper (Cu), % 0 to 0.020
0
Iron (Fe), % 0 to 0.0035
92.5 to 95.3
Magnesium (Mg), % 92.7 to 95.7
0
Manganese (Mn), % 0.35 to 0.7
0.55 to 0.75
Molybdenum (Mo), % 0
0.3 to 0.6
Nickel (Ni), % 0 to 0.0020
2.5 to 3.5
Phosphorus (P), % 0
0 to 0.040
Silicon (Si), % 0.5 to 1.5
0 to 0.5
Sulfur (S), % 0
0 to 0.045
Zinc (Zn), % 0 to 0.12
0