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AZ91A Magnesium vs. SAE-AISI 1010 Steel

AZ91A magnesium belongs to the magnesium alloys classification, while SAE-AISI 1010 steel belongs to the iron alloys. There are 31 material properties with values for both materials. Properties with values for just one material (3, 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 SAE-AISI 1010 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 63
100 to 110
Elastic (Young's, Tensile) Modulus, GPa 46
190
Elongation at Break, % 5.0
22 to 31
Fatigue Strength, MPa 99
150 to 230
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 18
73
Shear Strength, MPa 140
230 to 250
Tensile Strength: Ultimate (UTS), MPa 240
350 to 400
Tensile Strength: Yield (Proof), MPa 160
190 to 330

Thermal Properties

Latent Heat of Fusion, J/g 360
250
Maximum Temperature: Mechanical, °C 130
400
Melting Completion (Liquidus), °C 600
1470
Melting Onset (Solidus), °C 470
1430
Specific Heat Capacity, J/kg-K 990
470
Thermal Conductivity, W/m-K 73
47
Thermal Expansion, µm/m-K 26
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 10
12
Electrical Conductivity: Equal Weight (Specific), % IACS 52
14

Otherwise Unclassified Properties

Base Metal Price, % relative 12
1.8
Density, g/cm3 1.7
7.9
Embodied Carbon, kg CO2/kg material 22
1.4
Embodied Energy, MJ/kg 160
18
Embodied Water, L/kg 990
45

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 11
82 to 93
Resilience: Unit (Modulus of Resilience), kJ/m3 280
100 to 290
Stiffness to Weight: Axial, points 15
13
Stiffness to Weight: Bending, points 69
24
Strength to Weight: Axial, points 38
12 to 14
Strength to Weight: Bending, points 49
14 to 15
Thermal Diffusivity, mm2/s 42
13
Thermal Shock Resistance, points 14
11 to 13

Alloy Composition

Aluminum (Al), % 8.3 to 9.7
0
Carbon (C), % 0
0.080 to 0.13
Copper (Cu), % 0 to 0.1
0
Iron (Fe), % 0
99.18 to 99.62
Magnesium (Mg), % 88.2 to 91.2
0
Manganese (Mn), % 0.13 to 0.5
0.3 to 0.6
Nickel (Ni), % 0 to 0.030
0
Phosphorus (P), % 0
0 to 0.040
Silicon (Si), % 0 to 0.5
0
Sulfur (S), % 0
0 to 0.050
Zinc (Zn), % 0.35 to 1.0
0