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AZ91B Magnesium vs. EN 1.5682 Steel

AZ91B magnesium belongs to the magnesium alloys classification, while EN 1.5682 steel belongs to the iron alloys. There are 29 material properties with values for both materials. Properties with values for just one material (5, 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 AZ91B magnesium and the bottom bar is EN 1.5682 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 63
230
Elastic (Young's, Tensile) Modulus, GPa 46
190
Elongation at Break, % 5.0
21
Fatigue Strength, MPa 79
400
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 18
72
Shear Strength, MPa 140
480
Tensile Strength: Ultimate (UTS), MPa 240
770
Tensile Strength: Yield (Proof), MPa 160
570

Thermal Properties

Latent Heat of Fusion, J/g 360
260
Maximum Temperature: Mechanical, °C 130
430
Melting Completion (Liquidus), °C 600
1450
Melting Onset (Solidus), °C 470
1410
Specific Heat Capacity, J/kg-K 990
470
Thermal Expansion, µm/m-K 26
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 11
8.7
Electrical Conductivity: Equal Weight (Specific), % IACS 58
9.8

Otherwise Unclassified Properties

Base Metal Price, % relative 12
7.5
Density, g/cm3 1.7
7.9
Embodied Carbon, kg CO2/kg material 22
2.3
Embodied Energy, MJ/kg 160
31
Embodied Water, L/kg 990
63

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 11
150
Resilience: Unit (Modulus of Resilience), kJ/m3 280
870
Stiffness to Weight: Axial, points 15
13
Stiffness to Weight: Bending, points 69
24
Strength to Weight: Axial, points 38
27
Strength to Weight: Bending, points 49
23
Thermal Shock Resistance, points 14
23

Alloy Composition

Aluminum (Al), % 8.3 to 9.7
0
Carbon (C), % 0
0 to 0.13
Copper (Cu), % 0 to 0.35
0 to 0.3
Iron (Fe), % 0
88.7 to 91.1
Magnesium (Mg), % 87.9 to 91.2
0
Manganese (Mn), % 0.13 to 0.5
0.3 to 0.8
Molybdenum (Mo), % 0
0 to 0.1
Nickel (Ni), % 0 to 0.030
8.5 to 9.5
Phosphorus (P), % 0
0 to 0.020
Silicon (Si), % 0 to 0.5
0.15 to 0.35
Sulfur (S), % 0
0 to 0.0050
Vanadium (V), % 0
0 to 0.050
Zinc (Zn), % 0.35 to 1.0
0