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ASTM A210 Steel vs. AZ81A Magnesium

ASTM A210 steel belongs to the iron alloys classification, while AZ81A magnesium belongs to the magnesium 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 ASTM A210 steel and the bottom bar is AZ81A magnesium.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 140 to 160
55
Elastic (Young's, Tensile) Modulus, GPa 190
46
Elongation at Break, % 34
3.0 to 8.8
Fatigue Strength, MPa 230 to 250
78 to 80
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 73
18
Shear Strength, MPa 320 to 360
91 to 130
Tensile Strength: Ultimate (UTS), MPa 470 to 540
160 to 240
Tensile Strength: Yield (Proof), MPa 290 to 310
84

Thermal Properties

Latent Heat of Fusion, J/g 250
350
Maximum Temperature: Mechanical, °C 400
130
Melting Completion (Liquidus), °C 1460 to 1470
600
Melting Onset (Solidus), °C 1420
500
Specific Heat Capacity, J/kg-K 470
990
Thermal Conductivity, W/m-K 52 to 53
84
Thermal Expansion, µm/m-K 12
27

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.0
12
Electrical Conductivity: Equal Weight (Specific), % IACS 8.0 to 8.1
65

Otherwise Unclassified Properties

Base Metal Price, % relative 1.8
12
Density, g/cm3 7.9
1.7
Embodied Carbon, kg CO2/kg material 1.4
23
Embodied Energy, MJ/kg 18
160
Embodied Water, L/kg 45 to 46
990

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 140 to 160
4.0 to 17
Resilience: Unit (Modulus of Resilience), kJ/m3 230 to 250
77 to 78
Stiffness to Weight: Axial, points 13
15
Stiffness to Weight: Bending, points 24
70
Strength to Weight: Axial, points 17 to 19
26 to 39
Strength to Weight: Bending, points 17 to 19
38 to 50
Thermal Diffusivity, mm2/s 14
50
Thermal Shock Resistance, points 15 to 17
9.1 to 14