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ACI-ASTM CF10SMnN Steel vs. AZ91A Magnesium

ACI-ASTM CF10SMnN steel belongs to the iron alloys classification, while AZ91A magnesium belongs to the magnesium alloys. There are 26 material properties with values for both materials. Properties with values for just one material (9, 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 ACI-ASTM CF10SMnN steel and the bottom bar is AZ91A magnesium.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 190
63
Elastic (Young's, Tensile) Modulus, GPa 190
46
Elongation at Break, % 34
5.0
Fatigue Strength, MPa 260
99
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 75
18
Tensile Strength: Ultimate (UTS), MPa 660
240
Tensile Strength: Yield (Proof), MPa 330
160

Thermal Properties

Latent Heat of Fusion, J/g 340
360
Maximum Temperature: Mechanical, °C 900
130
Melting Completion (Liquidus), °C 1360
600
Melting Onset (Solidus), °C 1310
470
Specific Heat Capacity, J/kg-K 500
990
Thermal Expansion, µm/m-K 16
26

Otherwise Unclassified Properties

Base Metal Price, % relative 15
12
Density, g/cm3 7.5
1.7
Embodied Carbon, kg CO2/kg material 3.1
22
Embodied Energy, MJ/kg 45
160
Embodied Water, L/kg 150
990

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 180
11
Resilience: Unit (Modulus of Resilience), kJ/m3 280
280
Stiffness to Weight: Axial, points 14
15
Stiffness to Weight: Bending, points 26
69
Strength to Weight: Axial, points 24
38
Strength to Weight: Bending, points 22
49
Thermal Shock Resistance, points 15
14

Alloy Composition

Aluminum (Al), % 0
8.3 to 9.7
Carbon (C), % 0 to 0.1
0
Chromium (Cr), % 16 to 18
0
Copper (Cu), % 0
0 to 0.1
Iron (Fe), % 59.1 to 65.4
0
Magnesium (Mg), % 0
88.2 to 91.2
Manganese (Mn), % 7.0 to 9.0
0.13 to 0.5
Nickel (Ni), % 8.0 to 9.0
0 to 0.030
Nitrogen (N), % 0.080 to 0.18
0
Phosphorus (P), % 0 to 0.060
0
Silicon (Si), % 3.5 to 4.5
0 to 0.5
Sulfur (S), % 0 to 0.030
0
Zinc (Zn), % 0
0.35 to 1.0