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AS41A Magnesium vs. EN 1.0303 Steel

AS41A magnesium belongs to the magnesium alloys classification, while EN 1.0303 steel belongs to the iron alloys. There are 30 material properties with values for both materials. Properties with values for just one material (2, 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 AS41A magnesium and the bottom bar is EN 1.0303 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 45
190
Elongation at Break, % 11
12 to 25
Fatigue Strength, MPa 100
150 to 230
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 17
73
Shear Strength, MPa 130
220 to 260
Tensile Strength: Ultimate (UTS), MPa 230
290 to 410
Tensile Strength: Yield (Proof), MPa 140
200 to 320

Thermal Properties

Latent Heat of Fusion, J/g 370
250
Maximum Temperature: Mechanical, °C 110
400
Melting Completion (Liquidus), °C 620
1470
Melting Onset (Solidus), °C 570
1430
Specific Heat Capacity, J/kg-K 1000
470
Thermal Conductivity, W/m-K 68
53
Thermal Expansion, µm/m-K 26
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 17
6.9
Electrical Conductivity: Equal Weight (Specific), % IACS 92
7.9

Otherwise Unclassified Properties

Base Metal Price, % relative 12
1.8
Density, g/cm3 1.6
7.9
Embodied Carbon, kg CO2/kg material 23
1.4
Embodied Energy, MJ/kg 160
18
Embodied Water, L/kg 980
46

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 21
30 to 94
Resilience: Unit (Modulus of Resilience), kJ/m3 220
110 to 270
Stiffness to Weight: Axial, points 15
13
Stiffness to Weight: Bending, points 72
24
Strength to Weight: Axial, points 38
10 to 15
Strength to Weight: Bending, points 50
12 to 16
Thermal Diffusivity, mm2/s 41
14
Thermal Shock Resistance, points 14
9.2 to 13

Alloy Composition

Aluminum (Al), % 3.5 to 5.0
0.020 to 0.060
Carbon (C), % 0
0.020 to 0.060
Copper (Cu), % 0 to 0.060
0
Iron (Fe), % 0
99.335 to 99.71
Magnesium (Mg), % 92.8 to 95.8
0
Manganese (Mn), % 0.2 to 0.5
0.25 to 0.4
Nickel (Ni), % 0 to 0.030
0
Phosphorus (P), % 0
0 to 0.020
Silicon (Si), % 0.5 to 1.5
0 to 0.1
Sulfur (S), % 0
0 to 0.025
Zinc (Zn), % 0 to 0.12
0