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AZ91A Magnesium vs. EN 1.5113 Steel

AZ91A magnesium belongs to the magnesium alloys classification, while EN 1.5113 steel belongs to the iron alloys. There are 31 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 AZ91A magnesium and the bottom bar is EN 1.5113 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 63
170 to 270
Elastic (Young's, Tensile) Modulus, GPa 46
190
Elongation at Break, % 5.0
11 to 18
Fatigue Strength, MPa 99
220 to 470
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 18
72
Shear Strength, MPa 140
360 to 540
Tensile Strength: Ultimate (UTS), MPa 240
580 to 900
Tensile Strength: Yield (Proof), MPa 160
320 to 770

Thermal Properties

Latent Heat of Fusion, J/g 360
260
Maximum Temperature: Mechanical, °C 130
400
Melting Completion (Liquidus), °C 600
1450
Melting Onset (Solidus), °C 470
1410
Specific Heat Capacity, J/kg-K 990
480
Thermal Conductivity, W/m-K 73
52
Thermal Expansion, µm/m-K 26
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 10
7.2
Electrical Conductivity: Equal Weight (Specific), % IACS 52
8.4

Otherwise Unclassified Properties

Base Metal Price, % relative 12
2.0
Density, g/cm3 1.7
7.8
Embodied Carbon, kg CO2/kg material 22
1.4
Embodied Energy, MJ/kg 160
19
Embodied Water, L/kg 990
48

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 11
91 to 96
Resilience: Unit (Modulus of Resilience), kJ/m3 280
270 to 1570
Stiffness to Weight: Axial, points 15
13
Stiffness to Weight: Bending, points 69
24
Strength to Weight: Axial, points 38
21 to 32
Strength to Weight: Bending, points 49
20 to 27
Thermal Diffusivity, mm2/s 42
14
Thermal Shock Resistance, points 14
17 to 26

Alloy Composition

Aluminum (Al), % 8.3 to 9.7
0
Carbon (C), % 0
0 to 0.1
Copper (Cu), % 0 to 0.1
0
Iron (Fe), % 0
97 to 97.5
Magnesium (Mg), % 88.2 to 91.2
0
Manganese (Mn), % 0.13 to 0.5
1.6 to 1.8
Nickel (Ni), % 0 to 0.030
0
Phosphorus (P), % 0
0 to 0.025
Silicon (Si), % 0 to 0.5
0.9 to 1.1
Sulfur (S), % 0
0 to 0.025
Zinc (Zn), % 0.35 to 1.0
0