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AS41B Magnesium vs. SAE-AISI 6150 Steel

AS41B magnesium belongs to the magnesium alloys classification, while SAE-AISI 6150 steel belongs to the iron alloys. There are 30 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 AS41B magnesium and the bottom bar is SAE-AISI 6150 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 45
190
Elongation at Break, % 6.0
15 to 23
Fatigue Strength, MPa 97
300 to 750
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 18
73
Shear Strength, MPa 120
400 to 730
Tensile Strength: Ultimate (UTS), MPa 210
630 to 1200
Tensile Strength: Yield (Proof), MPa 140
420 to 1160

Thermal Properties

Latent Heat of Fusion, J/g 370
250
Maximum Temperature: Mechanical, °C 110
420
Melting Completion (Liquidus), °C 620
1460
Melting Onset (Solidus), °C 570
1410
Specific Heat Capacity, J/kg-K 1000
470
Thermal Conductivity, W/m-K 68
46
Thermal Expansion, µm/m-K 26
12 to 13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 17
7.3
Electrical Conductivity: Equal Weight (Specific), % IACS 92
8.4

Otherwise Unclassified Properties

Base Metal Price, % relative 12
2.3
Density, g/cm3 1.7
7.8
Embodied Carbon, kg CO2/kg material 23
2.0
Embodied Energy, MJ/kg 160
28
Embodied Water, L/kg 980
51

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 11
130 to 180
Resilience: Unit (Modulus of Resilience), kJ/m3 220
460 to 3590
Stiffness to Weight: Axial, points 15
13
Stiffness to Weight: Bending, points 72
24
Strength to Weight: Axial, points 35
22 to 43
Strength to Weight: Bending, points 47
21 to 32
Thermal Diffusivity, mm2/s 41
13
Thermal Shock Resistance, points 13
20 to 38

Alloy Composition

Aluminum (Al), % 3.5 to 5.0
0
Carbon (C), % 0
0.48 to 0.53
Chromium (Cr), % 0
0.8 to 1.1
Copper (Cu), % 0 to 0.020
0
Iron (Fe), % 0 to 0.0035
96.7 to 97.7
Magnesium (Mg), % 92.7 to 95.7
0
Manganese (Mn), % 0.35 to 0.7
0.7 to 0.9
Nickel (Ni), % 0 to 0.0020
0
Phosphorus (P), % 0
0 to 0.035
Silicon (Si), % 0.5 to 1.5
0.15 to 0.35
Sulfur (S), % 0
0 to 0.040
Vanadium (V), % 0
0.15 to 0.3
Zinc (Zn), % 0 to 0.12
0